

Doctor Who
The adventures of The Doctor, a time-traveling humanoid alien known as a Time Lord. He explores the universe in his TARDIS, a sentient time-traveling spaceship. Its exterior appears as a blue British police box, which was a common sight in Britain in 1963 when the series first aired. Along with a succession of companions, The Doctor faces a variety of foes while working to save civilizations, help ordinary people, and right many wrongs.
Cast

Sylvester McCoy
The Doctor

Sophie Aldred
Ace
Seasons
The season introduces William Hartnell as the First Doctor, an alien who travels through time and space in his TARDIS, which appears to be a British police box on the outside. Carole Ann Ford is also introduced as the Doctor's granddaughter Susan Foreman, who acts as his companion alongside her schoolteachers Ian Chesterton and Barbara Wright, portrayed by William Russell and Jacqueline Hill, respectively. Throughout the season, the Doctor and his companions travel throughout history and into the future. Historical stories were intended to educate viewers about significant events in history, such as the Aztec civilisation and the French Revolution; futuristic episodes took a more subtle approach to educating viewers, such as the theme of pacifism with the Daleks.

E1An Unearthly Child
Nov 23, 1963
After discussing a strange pupil, Susan Foreman, teachers Ian and Barbara follow her to a junkyard. They meet her grandfather, the Doctor, and force their way inside a police box with frightening results.

E2The Cave of Skulls
Nov 30, 1963
The enigmatic Doctor, wary that Ian and Barbara will reveal his secrets to the people of 20th-century Earth, takes them and his granddaughter Susan back to the dawn of human history. There, the four travellers are dragged into the savage politics of a tribe of cavemen who have lost the secret of making fire...

E3The Forest of Fear
Dec 7, 1963
Prisoners of the earliest humans, the TARDIS crew are caught in a deadly power play for leadership of the tribe.

E4The Firemaker
Dec 14, 1963
The TARDIS crew must make fire for the early humans to stay alive. But once they do, they may not be allowed to leave!

E5The Dead Planet
Dec 21, 1963
Time Unknown, Planet Unknown. The TARDIS lands in an eerie petrified forest overlooking a magnificent steel city. The Doctor wants to explore the city – but what's waiting there?

E6The Survivors
Dec 28, 1963
The dead planet is not uninhabited after all. The Doctor is about to meet what will become his greatest enemies... And he and his crew are dying of radiation sickness.

E7The Escape
Jan 4, 1964
Imprisoned on Skaro by the scheming Daleks, the Doctor and his companions work to escape their clutches.

E8The Ambush
Jan 11, 1964
The time travellers work desperately to both escape the Dalek city and prevent a bloody massacre.

E9The Expedition
Jan 18, 1964
The time travellers have escaped from the Daleks, but left a vital piece of the TARDIS behind. Getting it back will mean pushing the Thals to mount a dangerous operation.

E10The Ordeal
Jan 25, 1964
Ian, Barbara and the Thals struggle through the caves to reach the Dalek city. Will they get there in time? Is there even a way through the treacherous caves? And what are the Daleks planning?

E11The Rescue
Feb 1, 1964
Time is running out as the Doctor and his companions try to defeat the Daleks before they wipe out all life on Skaro.

E12The Edge of Destruction
Feb 8, 1964
A mysterious explosion has knocked the TARDIS into void. And in their confusion, the crew are turning on one another.

E13The Brink of Disaster
Feb 15, 1964
The TARDIS is adrift, the crew turning on each other. Only by working together can they find their way out before they are destroyed.

E14The Roof of the World
Feb 22, 1964
The TARDIS experiences a total power failure and is stranded in the Himalayas in the 13th century. The travellers are forced to join the caravan of the famous explorer, Marco Polo, in order to survive -- but Polo, fascinated by their claims that the TARDIS can fly through the air, seizes it on behalf of Kublai Khan in the hope that presenting the Khan with such a fabulous gift will convince him to let Polo return home to Venice. The travellers are forced to accompany Polo on his long trek across Asia to the Khan's court, but their many attempts to reclaim their property are foiled -- not just by Polo, but by the war lord Tegana, who is apparently on a mission of peace but has entirely different plans for dealing with Kublai Khan...

E15The Singing Sands
Feb 29, 1964
Tegana sabotages the party's water bags, leaving them in dire need of fresh supplies.

E16Five Hundred Eyes
Mar 7, 1964
The Doctor and Susan are able to supply Marco with condensation that has formed inside the TARDIS, saving the group from dying of thirst. When the group are reunited with Tegana, the travellers begin to suspect he is up to something.

E17The Wall of Lies
Mar 14, 1964
The Doctor's group manage to rescue Barbara from the Mongols but once more Marco remains unaware of Tegana's involvement.

E18Rider from Shang Tu
Mar 21, 1964
The Doctor and his friends elect to warn Marco of Acomat's attack even though it means losing their chance to gain access to the TARDIS.

E19Mighty Kublai Khan
Mar 28, 1964
The Doctor, Ian and Barbara are forced to surrender to Tegana and Marco, leaving both of them the opportunity to gain possession of the TARDIS.

E20Assassin at Peking
Apr 4, 1964
Tegana finally makes his move to assassinate the Khan, giving the Doctor and his friends an opportunity to thwart his plans and regain the TARDIS.

E21The Sea of Death
Apr 11, 1964
The alien world of Marinus. Perfect peace has reigned here for decades due to the mind-controlling influence of a machine known as the Conscience. But now a race known as the Voord have developed an immunity and Arbitan, keeper of the machine, has been forced to scatter the vital control keys around the planet. Now he needs the help of the time travellers to get them back - it will be an extraordinary journey, with perils every step of the way...

E22The Velvet Web
Apr 18, 1964
The Doctor and his friends arrive in the apparently idyllic city of Morphoton but Barbara soon begins to realise there is more to their hosts than meets the eye.

E23The Screaming Jungle
Apr 25, 1964
The search for the second key takes the travellers to a jungle where Ian and Barbara come under threat from rapidly growing plants.

E24The Snows of Terror
May 2, 1964
Searching for the third key, Ian and Barbara meet with the sinister trapper Vasor before following Susan and the others into a cave system guarded by the mysterious Ice Soldiers.

E25Sentence of Death
May 9, 1964
The group are reunited with the Doctor in the city of Millennius where Ian faces trial for murder after the fourth key is stolen.

E26The Keys of Marinus
May 16, 1964
The Doctor and his friends must locate the real murderers and the fourth key before heading off for a final confrontation with the Voord

E27The Temple of Evil
May 23, 1964
The TARDIS arrives on Earth landing in 16th century Aztec society. Barbara goes off exploring - despite the Doctor's orders not to wander off - and is taken away by the high priest Autloc who believes she is the reincarnation of the goddess Yetaxa. They believe it is a sign that the rains - which are late - will now come. The high priest of sacrifice Tlotoxl recruits Ian to lead their army but he finds he has a rival in Ixta. Ian is less than comfortable with his role when he learns that they are to deliver the human sacrifice to the high priest at the rain ceremony. The Doctor emphasizes that they must not interfere with Aztec rituals, something that does not sit well with Barbara.

E28The Warriors of Death
May 30, 1964
Barbara tries to change the course of history - and Ian fights for his life.

E29The Bride of Sacrifice
Jun 6, 1964
While the Doctor tries to find a way back to the TARDIS, Tlotoxl continues to plot Barbara's downfall and sees an opening when Susan questions Aztec custom.

E30The Day of Darkness
Jun 13, 1964
Tlotoxl's machinations result in both Susan and Ian being arrested. With the TARDIS once again trapped inside the tomb, the travellers' only hope for escape lies with Autloc and Cameca.

E31Strangers in Space
Jun 20, 1964
The 28th century. The TARDIS materialises on a spaceship orbiting a planet known as the Sense-Sphere, whose natives, the Sensorites, have trapped the ship's human crew in a state of paralysis.

E32The Unwilling Warriors
Jun 27, 1964
The Doctor and his companions are on board an Earth ship trapped in orbit around the Sense-Sphere when it is boarded by the Sensorites, who steal the lock mechanism from the TARDIS.

E33Hidden Danger
Jul 11, 1964
The Doctor and his companions are escorted to the Sense-Sphere where they attempt to negotiate with the Sensorites for the release of the TARDIS.

E34A Race Against Death
Jul 18, 1964
With Ian having fallen victim to the Sensorites' plague, the Doctor is desperate to find a cure. But the City Administrator is still determined to rid his world of aliens.

E35Kidnap
Jul 25, 1964
The City Administrator is determined to destroy the Doctor and his friends and his paranoia prevents the Doctor's cure from being distributed.

E36A Desperate Venture
Aug 1, 1964
While the City Administrator's schemes reach their climax, the Doctor and Ian venture into the tunnels under the city to discover the real cause of the Sensorite plague.

E37A Land of Fear
Aug 8, 1964
The TARDIS lands during the French Revolution, where Ian, Barbara, and Susan become caught up in the politics of the day. When they are arrested and set to be executed, the Doctor must take on the disguise of a public official to try and save their lives.

E38Guests of Madame Guillotine
Aug 15, 1964
Susan, Ian and Barbara are sentenced to be guillotined but an encounter with a dying English prisoner may offer Ian a chance of survival.

E39A Change of Identity
Aug 22, 1964
Susan and Barbara are rescued by Jules and Jean, two members of the escape chain, while the Doctor gains access to the prison by posing as a revolution official.

E40The Tyrant of France
Aug 29, 1964
The Doctor is forced into a meeting with Robespierre while Barbara's attempts to find a physician for Susan result in them being betrayed.

E41A Bargain of Necessity
Sep 5, 1964
Ian finds himself held prisoner by the treacherous Leon while the Doctor attempts to engineer Susan and Barbara's escape.

E42Prisoners of Conciergerie
Sep 12, 1964
Ian finally delivers his message to James Stirling but in order to secure Susan's release he and Barbara are forced into a dangerous spying mission.
Milestones this season included not one but two encore appearances by the Daleks; the departure of the original three companions, Susan Foreman, Barbara Wright and Ian Chesterton; and the first appearance of someone else from the Doctor and Susan's home planet, and the first Time Lord enemy to appear.

E1Planet of Giants
Oct 31, 1964
An accident in flight leads to the TARDIS and the travellers being miniaturised. Now only an inch high, the Doctor, Barbara, Ian and Susan explore an English country garden.

E2Dangerous Journey
Nov 7, 1964
Ian and Barbara are accidentally taken into Smithers' laboratory and, while the Doctor and Susan face a hazardous journey to reach them, they witness the deadly effects of DN6 first hand.

E3Crisis
Nov 14, 1964
The Doctor and his friends face a race against time to expose Forrester's plans and return to normal size before Barbara succumbs to the effects of DN6.

E4World's End
Nov 21, 1964
The TARDIS lands in a ruined and empty London in the 22nd Century. Robomen patrol the shattered streets. The Doctor is eager to discover the cause of the city's plight.

E5The Daleks
Nov 28, 1964
The Doctor and Ian are taken to the Dalek saucer while Susan and Barbara join the rebels in planning an attack.

E6Day of Reckoning
Dec 5, 1964
The Doctor manages to escape from the Dalek saucer and meet up with Susan and David but Ian is left trapped onboard. Meanwhile, Barbara and her new friends face a dangerous journey across London.

E7The End of Tomorrow
Dec 12, 1964
While Susan and David try to find a way out of London, Ian and Larry infiltrate the Dalek mine workings.

E8The Waking Ally
Dec 19, 1964
The Doctor's party investigate the Daleks' central control in Bedfordshire while Barbara and Jenny's attempt to reach it are derailed when they are betrayed.

E9Flashpoint
Dec 26, 1964
The Daleks' plan to transform Earth into a giant spaceship and wipe out its inhabitants is nearing completion and the Doctor and his friends face a race against time to prevent them from destroying the planet's core.

E10The Powerful Enemy
Jan 2, 1965
On the planet Dido, the monstrous Koquillion terrorizes Bennett and Vicki, the only survivors of a crashed spaceship. When the TARDIS lands, the Doctor, Ian, and Barbara team up with Vicki to discover what Koquillion is hiding.

E11Desperate Measures
Jan 9, 1965
The Doctor and Ian reach the crashed spaceship and meet up with Barbara and Vicki, where the Doctor uncovers the truth about Koquillion.

E12The Slave Traders
Jan 16, 1965
After relaxing at a Roman villa the Doctor is mistaken for a murdered lyre player and targeted by an assassin. Meanwhile, Ian and Barbara are captured by slave traders.

E13All Roads Lead to Rome
Jan 23, 1965
Barbara is sold as a slave and Ian is to be trained as a gladiator. The Doctor and Vicki arrive at the Emperor's court with the Doctor still masquerading as Maximus Pettulian.

E14Conspiracy
Jan 30, 1965
Poppaea plans to poison Barbara who has become the object of Nero's affections. The Doctor is to be thrown to the lions and Ian and Delos are set against each other in the arena.

E15Inferno
Feb 6, 1965
Inspired by the Doctor, Nero sets Rome ablaze. Ian must fight his way out of the arena and rescue Barbara. The Doctor and Vicki hurry to flee the city and escape to the TARDIS.

E16The Web Planet
Feb 13, 1965
The TARDIS is drawn by a mysterious force and lands on the alien planet Vortis. There the Doctor, Ian, Barbara and Vicki find themselves caught up in a war between an evil force known as "The Animus", its ant-like Zarbi allies, and the butterfly-like Menoptra race and their allies the subterranean Optera.

E17The Zarbi
Feb 20, 1965
The Doctor, Ian and Vicki are captured by the Zarbi while Barbara meets up with the butterfly-like Menoptera who are trying to reclaim the planet.

E18Escape to Danger
Feb 27, 1965
The Doctor is forced to co-operate with the Animus but Ian uses the opportunity to make an escape attempt.

E19Crater of Needles
Mar 6, 1965
Ian and Vrestin are captured by the subterranean Optera while Barbara and her Menoptera allies attempt to escape from the slave camp.

E20Invasion
Mar 13, 1965
Barbara and the surviving Menoptera take refuge in the Temple of Light while the Doctor and Vicki attempt to escape by taking control of a Zarbi.

E21The Centre
Mar 20, 1965
The Doctor and Vicki are taken before the Animus but the isoptope is left behind in the laboratory.The only hope of victory lies with Barbara and her Menoptera allies.

E22The Lion
Mar 27, 1965
The TARDIS lands in the Holy Land during the Third Crusade and the crew help save Richard the Lionheart from an ambush, but Barbara is captured and brought before Saladin.

E23The Knight of Jaffa
Apr 3, 1965
While the Doctor, Ian, and Vicki are drawn into the intrigues of King Richard's court, Barbara has to cope with an impatient Saladin and the vengeful El Akir.

E24The Wheel of Fortune
Apr 10, 1965
Barbara allies herself with a man whose wife and son were murdered by El Akir as the Doctor and Vicki are caught up in Richard's plan to offer his sister's hand in marriage to Saladin's brother.

E25The Warlords
Apr 17, 1965
Ian sets out with a reluctant accomplice to rescue Barbara from El Akir's palace as the Doctor and Vicki try to evade the suspicions of the Earl of Leicester.

E26The Space Museum
Apr 24, 1965
The TARDIS arrives on a planet that has been turned into a space museum but the Doctor and his friends are puzzled when they find themselves out of phase with their surroundings.

E27The Dimensions of Time
May 1, 1965
Now back on their proper time track, the Doctor and his friends must work to avoid the future they saw for themselves.

E28The Search
May 8, 1965
With the Doctor missing, Ian, Barbara and Vicki find themselves in danger from the Moroks while the Xerons also try to make contact with them.

E29The Final Phase
May 15, 1965
While Ian tries to force Lobos to release the Doctor from the museum, Vicki joins the Xerons in trying to gain the weapons needed to start a revolution against the occupiers.

E30The Executioners
May 22, 1965
The Daleks pursue The Doctor through time and space, with the intentions of exterminating him. Places they land include the Mary Celeste, a haunted house and the empire state building.

E31The Death of Time
May 29, 1965
While Ian and Vicki are threatened by a Mire Beast, the Doctor and Barbara meet up with the Aridians...who are then ordered to hand them over to the Daleks.

E32Flight Through Eternity
Jun 5, 1965
The TARDIS crew's attempts to escape from the Daleks take them to the top of the Empire State Building and a 19th century sailing ship.

E33Journey into Terror
Jun 12, 1965
The TARDIS lands in a haunted house where the Doctor and his friends are confronted by Dracula and Frankenstein's Monster...and then the Daleks appear.

E34The Death of Doctor Who
Jun 19, 1965
With Vicki trapped on board the Dalek time machine, the Doctor, Ian and Barbara decide to make their stand on the planet Mechanus.

E35The Planet of Decision
Jun 26, 1965
The Doctor and his friends are taken into the Mechanoid City but their troubles are far from over...especially when the Daleks launch an attack.

E36The Watcher
Jul 3, 1965
The Doctor, Vicki, and Steven Taylor, go to 1066 England, but something doesn't seem right including modern inventions like a Gramaphone and electricity. Could there be another Time Lord?

E37The Meddling Monk
Jul 10, 1965
The Doctor is being held prisoner by the Monk and Steven and Vicki's search for him brings them to the Saxon village.But a greater danger threatens when a Viking raiding party arrives.

E38A Battle of Wits
Jul 17, 1965
The Doctor manages to escape from his cell and get the upper hand on the Monk but his plans are derailed when Sven and Ulf arrive at the monastery.

E39Checkmate
Jul 24, 1965
The Doctor finally discovers what the Monk is up to and must move fast to prevent his opponent from altering the course of history.
At twelve episodes, The Daleks' Master Plan was the longest story in the show's history until superseded by the fourteen-episode The Trial of a Time Lord in 1986. The season also had the greatest number of different companions (seven) and producers (three). This was the longest season in the history of the franchise to date, at 45 episodes. It also featured the first appearance of actor Nicholas Courtney, although not in his most famous role as the Brigadier. The Daleks' Master Plan also saw the return of Peter Butterworth as the Monk, who became the second Doctor Who enemy to make a return (after the Daleks themselves) to the show. This was also the season of The War Machines, to date the only televised story in which the taboo of never referring to the Doctor directly by the name "Doctor Who" is broken, with the exception of Missy's teasing in World Enough and Time.

E1Four Hundred Dawns
Sep 11, 1965
After an encounter with a hostile robot called a Chumblie, the Doctor and his companions are rescued by a group of female Drahvins.

E2Trap of Steel
Sep 18, 1965
With the knowledge that the planet will be destroyed in two days, the Drahvins instruct the Doctor to help them steal the Rills' ship.

E3Air Lock
Sep 25, 1965
The Doctor and Vicki encounter the Rills and learn the situation is more complex than they thought while Steven finds the Drahvins' hospitality ever more perilous.

E4The Exploding Planet
Oct 2, 1965
The Doctor and Vicki enlist the aid of the Chumblies to rescue Steven from the Drahvins and then find a way off the planet before its destruction.

E5Mission to the Unknown
Oct 9, 1965
Whilst The Doctor, Steven and Vicki are traveling to their next destination. On the planet Kembel, Marc Cory, a Space Security Service agent discovers The Daleks are attending a secret meeting with their allies. Where Cory discovers the Dalek's evil plan, which sets the stage for the epic 12-part adventure "The Dalek Master Plan".

E6Temple of Secrets
Oct 16, 1965
The TARDIS lands in the middle of the Trojan War, where the Doctor is mistaken for the god Zeus.

E7Small Prophet, Quick Return
Oct 23, 1965
While Odysseus forces the Doctor to find a way to win the war, Steven decides to get himself taken prisoner in order to enter Troy and find Vicki and the TARDIS.

E8Death of a Spy
Oct 30, 1965
With Steven and Vicki being held prisoner by the Trojans, the Doctor's only hope of seeing them again is to suggest the idea of the Trojan Horse.

E9Horse of Destruction
Nov 6, 1965
The Doctor waits inside the Trojan Horse for a chance to reach his companions but Steven's assumed identity as a Greek soldier and Vicki's growing feelings for Troilus endanger their escape.

E10The Nightmare Begins
Nov 13, 1965
The Doctor runs afoul of the Daleks and Special Security Agent Bret Vyon on the planet Kembel.

E11Day of Armageddon
Nov 20, 1965
The Doctor infiltrates the Daleks' conference to try and discover their plans, leaving Steven, Katarina and Bret to find a way off the planet.

E12Devil's Planet
Nov 27, 1965
The Doctor and his friends escape Kembel in the Spar ship but the Daleks force them down on the planet Desperus, where they are threatened by a group of convicts.

E13The Traitors
Dec 4, 1965
With Katarina being held hostage, the Doctor, Steven and Bret are in danger of having to given in to Kirksen's demands, while, on Earth, Chen has them listed as traitors.

E14Counter Plot
Dec 11, 1965
The Doctor, Steven and Sara are accidentally transported to the planet Mira where Chen sends the Daleks after them.

E15Coronas of the Sun
Dec 18, 1965
The Doctor, Steven and Sara escape Mira in a Dalek pursuit ship but when they find the ship is returning to Kembel, they are forced to come up with a new plan to avoid the Daleks.

E16The Feast of Steven
Dec 25, 1965
The Doctor, Steven and Sara visit a Liverpool police station on Christmas Day and a Hollywood film set during the 1920s.

E17Volcano
Jan 1, 1966
The Daleks realise the Doctor has given them a fake Taranium Core while, on the planet Tigus, the Doctor encounters the Meddling Monk.

E18Golden Death
Jan 8, 1966
The Doctor, Steven and Sara travel to Ancient Egypt, pursued by both the Daleks and the Meddling Monk.

E19Escape Switch
Jan 15, 1966
Steven, Sara and the Monk are captured by the Daleks in order to force the Doctor to hand over the Taranium Core.

E20The Abandoned Planet
Jan 22, 1966
The Doctor, Steven and Sara reach Kembel where they find the Daleks have betrayed their allies and imprisoned them.

E21Destruction of Time
Jan 29, 1966
With the Daleks poised to invade the solar system, the Doctor decides his only option is to activate the Time Destructor prematurely, threatening the entire planet.

E22War of God
Feb 5, 1966
The TARDIS lands in sixteenth century Paris and Steven becomes involved with a group of Huguenots.

E23The Sea Beggar
Feb 12, 1966
While trying to find the Doctor, Steven discovers a conspiracy to assassinate a man known as the Sea Beggar.

E24Priest of Death
Feb 19, 1966
Steven has discovered the identity of the Sea Beggar, but can he warn the Huguenots in time?

E25Bell of Doom
Feb 26, 1966
Steven rejoins the Doctor and they leave Paris just ahead of the massacre, leaving Anne behind.

E26The Steel Sky
Mar 5, 1966
The Doctor, Steven and Dodo arrive on a giant spaceship millions of years in the future, transporting the last humans away from the doomed Earth.

E27The Plague
Mar 12, 1966
With the Ark infected with a cold virus, the Doctor must convince the Guardians to trust him so he can find a cure.

E28The Return
Mar 19, 1966
The Doctor, Steven and Dodo have travelled 700 years into the future and find that the Ark is now under the control of the Monoids as it approaches Refusis.

E29The Bomb
Mar 26, 1966
The Monoids abandon the Ark, leaving Steven and the Guardians to die, but a mutiny in their ranks may give the Doctor a chance to bring about peace.

E30The Celestial Toyroom
Apr 2, 1966
The Doctor, Steven and Dodo arrive in the realms of the Celestial Toymaker, who forces them to play his deadly games.

E31The Hall of Dolls
Apr 9, 1966
While the Doctor continues to play the Trilogic Game with the Toymaker, Steven and Dodo are involved in a deadly game of musical chairs.

E32The Dancing Floor
Apr 16, 1966
Steven and Dodo are forced to cross the dancing floor, where the Toymaker's dolls plan to force them to dance for eternity.

E33The Final Test
Apr 23, 1966
As the Doctor nears the end of his game against the Toymaker, Steven and Dodo take on Cyril in a lethal game of hopscotch to try and recover the TARDIS.

E34A Holiday for the Doctor
Apr 30, 1966
The TARDIS arrives in Tombstone, Arizona in 1891. Where the Doctor is looking for a dentist when he has a toothache, where The Doctor finds the local dentist is the famous Doc Holliday who is in a feud with The Clanton Brothers and their hired gunfighter Johnny Ringo, whilst local sheriff Wyatt Earp is trying to keep the peace. The Doctor, Steven and Dodo find themselves joining forces with The Clanton Brothers and Sheriff Wyatt Earp.

E35Don't Shoot the Pianist
May 7, 1966
With the Clantons believing the Doctor to be Doc Holliday, Wyatt Earp takes him into protective custody but this leaves Steven and Dodo in danger.

E36Johnny Ringo
May 14, 1966
Earp comes to Steven's rescue and arrests Phineas Clanton, prompting the Clantons to decide to enlist the help of Johnny Ringo.

E37The O.K. Corral
May 21, 1966
The Clantons have shot Warren Earp, leading to a showdown between the two families with the Doctor powerless to prevent bloodshed.

E38The Savages (1)
May 28, 1966
The Doctor, Steven and Dodo arrive in the far future and are welcomed by the advanced civilisation of the Elders but soon begin to suspect they are hiding a secret.

E39The Savages (2)
Jun 4, 1966
The Doctor, Steven and Dodo investigate why there are Savages in the Elders' city and uncover the true price of the Elders' perfect society.

E40The Savages (3)
Jun 11, 1966
The Doctor has been subjected to the Elders' extraction process and Steven and Dodo must return to their city to rescue him.

E41The Savages (4)
Jun 18, 1966
The Doctor urges the Savages to finally bring an end to the Elders' oppression and enlists the help of an unlikely ally.

E42The War Machines (1)
Jun 25, 1966
The Doctor and Dodo return to London in the present day where the Doctor becomes concerned about WOTAN, a new super-computer installed in the Post Officer Tower.

E43The War Machines (2)
Jul 2, 1966
Dodo is under the control of WOTAN and attempts to lure the Doctor into a trap, while the rest of WOTAN's slaves begin construction on its robotic War Machines.

E44The War Machines (3)
Jul 9, 1966
Ben tries to escape from the warehouse but is captured by Polly, who is now also under WOTAN's control, and forced to work on construction the War Machine.

E45The War Machines (4)
Jul 16, 1966
The first War Machine is defeated but the Doctor only has a matter of hours to destroy WOTAN before the rest of its army is activated.
This season was a season of major changes for Doctor Who, including some that have influenced the series and franchise ever since. Most notably, season 4 saw William Hartnell's First Doctor hand off the baton to Patrick Troughton's Second Doctor in the very first regeneration. When Hartnell announced his plans to leave the series, the show's writers came up with the idea of having the Doctor change his appearance and personality. In 1966, while it was not uncommon for actors to change in ongoing TV and film roles, this was possibly the first time a change in appearance was written into the very nature of the character.

E1The Smugglers (1)
Sep 10, 1966
The Doctor discovers Polly and Ben aboard the TARDIS shortly before the ship arrives in 17th century Cornwall, where the local churchwarden gives the Doctor a cryptic message shortly before being murdered.

E2The Smugglers (2)
Sep 17, 1966
Pike is convinced that the Doctor knows the location of Avery's treasure while Polly and Ben try to convince the locals they were not responsible for Longfoot's murder.

E3The Smugglers (3)
Sep 24, 1966
Polly and Ben are placed in the custody of Blake, who reveals he also has his suspicions about the Squire, while the Doctor and Kewper are forced to team up to escape from Pike's ship.

E4The Smugglers (4)
Oct 1, 1966
The Doctor and his friends are at the mercy of Cherub, who is now seeking Avery's treasure for himself, while Pike prepares to attack the village.

E5The Tenth Planet (1)
Oct 8, 1966
In 1986 a new planet appears in the Solar System which turns out to be a long-lost twin of Earth's named Mondas. Its inhabitants are the Cybermen.

E6The Tenth Planet (2)
Oct 15, 1966
The Doctor's warnings are ignored and the Cybermen take over the base, hampering the crew's efforts to help Zeus IV.

E7The Tenth Planet (3)
Oct 22, 1966
With the Doctor out of action, it is up to Polly, Ben and Barclay to stop Cutler using the Z-Bomb and devastating half the world.

E8The Tenth Planet (4)
Oct 29, 1966
The Cybermen take over the base again, apparently to stop the humans using the Z-Bomb, but then the Doctor realises they intend to use it themselves to destroy Earth.

E9The Power of the Daleks (1)
Nov 5, 1966
The TARDIS arrives on the Earth colony of Vulcan where the newly-regenerated Doctor assumes the identity of an Earth Examiner.

E10The Power of the Daleks (2)
Nov 12, 1966
While the Doctor worries about the inert Daleks in the capsules, Lesterson makes plan to reactivate one of them.

E11The Power of the Daleks (3)
Nov 19, 1966
The Doctor fails to convince the colonists of the danger posed by the Daleks and soon the other two are also reactivated.

E12The Power of the Daleks (4)
Nov 26, 1966
With Polly being held prisoner by the rebels, the Doctor and Ben decide to investigate them, while Lesterson discovers the Daleks are reproducing.

E13The Power of the Daleks (5)
Dec 3, 1966
The Doctor and Quinn attempt to escape in order to stop Bragen using the Daleks to take over the colony.

E14The Power of the Daleks (6)
Dec 10, 1966
With Bragen having taken over, the Daleks trick the rebels into turning them loose and only the Doctor can stop them wiping out the entire colony.

E15The Highlanders (1)
Dec 17, 1966
The Doctor, Polly and Ben arrive in 1746, in the aftermath of the Battle of Culloden, and are captured by a group of Highlanders shortly before they themselves are captured by redcoats.

E16The Highlanders (2)
Dec 24, 1966
Polly and Kirsty capture Lieutenant Ffinch to try and enlist his help while the Doctor tricks Grey in order to escape.

E17The Highlanders (3)
Dec 31, 1966
With the Highlanders imprisoned aboard Trask's ship, the Doctor attempts to expose Grey's plan.

E18The Highlanders (4)
Jan 7, 1967
Ben manages to join up with the Doctor, Polly and Kirsty and together they work to free the Highlanders from Trask's ship before Grey sells them into slavery.

E19The Underwater Menace (1)
Jan 14, 1967
The TARDIS materialises on a deserted beach where the Doctor and his friends are captured by primitive warriors and taken to the fabled city of Atlantis.

E20The Underwater Menace (2)
Jan 21, 1967
While Ara tries to save Polly from being turned into a Fish Person and Ben and Jamie try to escape from the mines, the Doctor discovers the full extent of Zaroff's plans.

E21The Underwater Menace (3)
Jan 28, 1967
The Doctor and Ramo are sentenced to be sacrificed to the goddess Amdo and must escape to put a stop to Zaroff's plan.

E22The Underwater Menace (4)
Feb 4, 1967
With Zaroff's plan nearing completion, the Doctor and Ben realise the only way to save the world is to destroy Atlantis.

E23The Moonbase (1)
Feb 11, 1967
The TARDIS arrives on the Moon in the year 2070.When Jamie is injured, the other travellers are forced to seek the help of a moonbase afflicted with a space plague.

E24The Moonbase (2)
Feb 18, 1967
The Doctor and his friends attempt to convince the Moonbase crew that the Cybermen are responsible for the disappearances and find a cure for the plague.

E25The Moonbase (3)
Feb 25, 1967
The Cybermen take over the Moonbase and begin using the Gravitron to attack Earth but Polly, Ben and Jamie come up with a way to fight back.

E26The Moonbase (4)
Mar 4, 1967
With the Cybermen preparing to launch a full attack, the Doctor and his friends must keep the Moonbase and the Gravitron out of their hands until help arrives from Earth.

E27The Macra Terror (1)
Mar 11, 1967
The TARDIS arrives at a holiday camp company with the crew worried by a prediction of giant crabs and the Doctor becomes interested in the apparent madman Medok's stories of creatures that roam the colony at night.

E28The Macra Terror (2)
Mar 18, 1967
The Doctor is unable to convince the colonists that the Macra exist and an attempt to brainwash his companions results in Ben betraying his friends.

E29The Macra Terror (3)
Mar 25, 1967
The Doctor, Polly and Jamie are sentenced to work in the pits and an escape attempt sees Ben's loyalties called into question again.

E30The Macra Terror (4)
Apr 1, 1967
The Doctor and Polly manage to save Jamie from the Macra and then try to show the Pilot who is really in charge of the colony.

E31The Faceless Ones (1)
Apr 8, 1967
The TARDIS materialises on the runway of Gatwick Airport, where Polly witnesses a murder only to be kidnapped before she can report it.

E32The Faceless Ones (2)
Apr 15, 1967
With Polly having apparently forgotten them, the Doctor, Ben and Jamie decide to carry out their own investigation of Chameleon Tours.

E33The Faceless Ones (3)
Apr 22, 1967
The Doctor, Jamie and Sam manage to convince Crossland to trust them and he persuades the Commandant to let them continue their investigation.

E34The Faceless Ones (4)
Apr 29, 1967
When Spencer attempts to kill them, the Doctor, Jamie and Sam become convinced Chameleon Tours are hiding something and Sam decides to book a ticket on one of their flights.

E35The Faceless Ones (5)
May 6, 1967
Jamie finds himself aboard the Chameleons' satellite and meets their Director while the Doctor forces the Chameleon Meadows to tell him the aliens' plans.

E36The Faceless Ones (6)
May 13, 1967
The Doctor and Pinto are captured by the Chameleons but the Doctor manages to use their dependence on their human originals to create dissent in their ranks.

E37The Evil of the Daleks (1)
May 20, 1967
Trying to find the stolen TARDIS, the Second Doctor and Jamie are lured into a trap by the Doctor's old enemies the Daleks.

E38The Evil of the Daleks (2)
May 27, 1967
The Doctor and Jamie investigate Waterfield's antiques shop, where they are knocked unconscious and transported back to the 19th century.

E39The Evil of the Daleks (3)
Jun 3, 1967
As part of the Daleks' experiment, the Doctor manipulates Jamie into attempting to rescue Victoria.

E40The Evil of the Daleks (4)
Jun 10, 1967
Jamie and Kemel team up to try and find Victoria, while the Doctor and the Daleks continue to monitor their progress.

E41The Evil of the Daleks (5)
Jun 17, 1967
With the experiment at an end, the Doctor begins to suspect the key to rescuing Jamie, Victoria and Kemel from the Daleks lies with Terrall.

E42The Evil of the Daleks (6)
Jun 24, 1967
The Doctor, Jamie and Waterfield follow the Daleks to Skaro, where they discover an unforeseen consequence to their experiment.

E43The Evil of the Daleks (7)
Jul 1, 1967
The Daleks are poised to spread the Dalek Factor throughout the history of Earth and begin by implanting the Doctor.
No complete stories from the season were known to have survived until the early-1990s when archivists recovered a complete version of The Tomb of the Cybermen. A second complete story, The Enemy of the World was recovered in 2013, along with a nearly complete recovery of the story that followed it, The Web of Fear. The season is also notable for having Patrick Troughton play a double-role as both the Doctor and Salamander in The Enemy of the World.

E1The Tomb of the Cybermen (1)
Sep 2, 1967
The Doctor, Jamie and Victoria arrive on Telos, where an archaeological group are exploring the Tomb of the Cybermen. But are the Cybermen as dormant as they believe?

E2The Tomb of the Cybermen (2)
Sep 9, 1967
The archaeologists learn they are stranded on Telos and Klieg suggests they use the opportunity to explore the Cybermen's tombs.

E3The Tomb of the Cybermen (3)
Sep 16, 1967
The Cybermen have been revived and plan to convert the archeologists into their own kind, prompting Hopper to attempt a rescue.

E4The Tomb of the Cybermen (4)
Sep 23, 1967
Klieg attempts to do a deal with the Cybercontroller while the Doctor tries to find a way to refreeze the Cybermen permanently.

E5The Abominable Snowmen (1)
Sep 30, 1967
When the TARDIS materialises in the Himalayas, the Doctor decides to pay a return visit to the nearby Det-Sen monastery only to be accused of murder.

E6The Abominable Snowmen (2)
Oct 7, 1967
Jamie and Victoria make their way to the monastery shortly before it is attacked by the Yeti.

E7The Abominable Snowmen (3)
Oct 14, 1967
While the Doctor and Jamie return to the TARDIS for equipment, the control sphere Jamie brought to the monastery is reactivated.

E8The Abominable Snowmen (4)
Oct 21, 1967
The Yeti escapes from the monastery and Victoria and Thonmi are accused of assisting it, while the Doctor and Jamie endure a perilous journey back across the mountains.

E9The Abominable Snowmen (5)
Oct 28, 1967
Victoria falls under the mental influence of Padmasambhva as the Yeti attack in order to drive the monks from the area.

E10The Abominable Snowmen (6)
Nov 4, 1967
With the Great Intelligence on the verge of becoming corporeal, the Doctor challenges Padmasambhva to a mental battle in order to defeat it.

E11The Ice Warriors (1)
Nov 11, 1967
The Doctor, Jamie and Victoria are brought to a base which is attempting to halt the flow of the Second Ice Age.

E12The Ice Warriors (2)
Nov 18, 1967
Varga revives and takes Victoria hostage as he works to revive his crew while the Doctor and Jamie find Penley stealing medical supplies.

E13The Ice Warriors (3)
Nov 25, 1967
Jamie and Arden venture out to rescue Victoria only to find the rest of the Ice Warriors are now active.

E14The Ice Warriors (4)
Dec 2, 1967
The Doctor leaves the base to try and find Jamie and Victoria while Storr tries to do a deal with the Ice Warriors.

E15The Ice Warriors (5)
Dec 9, 1967
The Doctor and Victoria are both held prisoner by the Ice Warriors as Varga decides to take over Brittanicus.

E16The Ice Warriors (6)
Dec 16, 1967
The Doctor and Victoria attempt to force the Ice Warriors to surrender control of the ioniser before the ice flow destroys them.

E17The Enemy of the World (1)
Dec 23, 1967
After the Doctor is attacked by a group of mysterious gunmen, he discovers he is the physical double of the famous scientist Salamander.

E18The Enemy of the World (2)
Dec 30, 1967
Jamie and Victoria agree to accompany Astrid to Hungary to observe Salamander's activities.

E19The Enemy of the World (3)
Jan 6, 1968
Jamie and Victoria join Astrid into attempting to rescue Denes but Salamander becomes suspicious of them.

E20The Enemy of the World (4)
Jan 13, 1968
Fariah brings the Doctor and Kent evidence of Salamander's activities but then they come under attack from Benik.

E21The Enemy of the World (5)
Jan 20, 1968
The Doctor persuades Bruce to help him infiltrate Salamander's research centre while Salamander takes drastic action to prevent Swann finding out the truth.

E22The Enemy of the World (6)
Jan 27, 1968
The Doctor discovers the true link between Salamander and Kent while Astrid tries to convince the shelter inhabitants they have been lied to.

E23The Web of Fear (1)
Feb 3, 1968
The TARDIS becomes trapped in space before ending up in an underground station of a mysteriously deserted London.

E24The Web of Fear (2)
Feb 10, 1968
Jamie and Victoria are reunited with Travers before Jamie joins the soldiers in attempting to find out what has happened to the Doctor.

E25The Web of Fear (3)
Feb 17, 1968
The Doctor and Victoria are taken back to the Goodge Street base by Colonel Lethbridge-Stewart where the Doctor becomes convinced there is a traitor in their midst.

E26The Web of Fear (4)
Feb 24, 1968
With Travers having been captured by the Yeti, the Doctor attempts to find a way to gain control of the robots while Lethbridge-Stewart tries to recover the TARDIS.

E27The Web of Fear (5)
Mar 2, 1968
Victoria and Travers are held prisoner by the Great Intelligence, who is planning to drain the Doctor's mind.

E28The Web of Fear (6)
Mar 9, 1968
The Doctor and his friends are held prisoner by the Intelligence and their only hope lies with Jamie, Arnold and a reprogrammed Yeti.

E29Fury from the Deep (1)
Mar 16, 1968
The Doctor, Jamie and Victoria are taken prisoner by the staff of a gas refinery, who have lost contact with their drilling rigs and experienced mysterious drops in pressure.

E30Fury from the Deep (2)
Mar 23, 1968
Harris asks for the Doctor's help with Maggie, while Van Lutyens and the Chief Engineer attempt to find out what is blocking the impeller.

E31Fury from the Deep (3)
Mar 30, 1968
While the Doctor begins his investigation into the weed creatures, Robson is attacked by one at the refinery.

E32Fury from the Deep (4)
Apr 6, 1968
Van Lutyens' investigation of the base of the impeller places the Doctor and Jamie in danger from the Weed Creature.

E33Fury from the Deep (5)
Apr 13, 1968
With the Weed Creature poised to burst out of the pipeline and attack the base, an encounter with Oak and Quill gives the Doctor a vital clue about its weakness.

E34Fury from the Deep (6)
Apr 20, 1968
The Doctor and Jamie rescue Victoria from Robson and realise they can destroy the Weed Creature with sound waves.

E35The Wheel in Space (1)
Apr 27, 1968
The Doctor and Jamie arrive on a mysterious spacecraft whose only occupant is a dangerous Servo Robot.

E36The Wheel in Space (2)
May 4, 1968
The Doctor and Jamie are brought aboard the Wheel where Jamie is horrified to learn the crew plan to destroy the Silver Carrier with the TARDIS on board.

E37The Wheel in Space (3)
May 11, 1968
Jamie sabotages the Wheel's x-ray laser, unknowingly giving the Cybermen an opportunity to reach the Wheel.

E38The Wheel in Space (4)
May 18, 1968
The Cybermen instruct their human slaves to smuggle them onto the Wheel while the Doctor attempts to convince Bennett of the threat they pose.

E39The Wheel in Space (5)
May 25, 1968
The Cybermen gain control of more members of the Wheel crew and the Doctor realises the only way to stop them is for Jamie and Zoe to make a dangerous space walk.

E40The Wheel in Space (6)
Jun 1, 1968
Jamie and Zoe attempt to recover the time vector generator while the Cybermen realise the Doctor is on the Wheel and make him their prime target.
This season featured the first ever UNIT story, The Invasion, which showcased the return of Brigadier Lethbridge-Stewart. It also featured the first official appearance of Time Lords and the as yet unnamed Doctor's home planet (another member of Susan and the Doctor's race, the Monk, had appeared previously, but without much elaboration and without using the term "Time Lord"). It also marked the tenure of Patrick Troughton as the Second Doctor. It consisted of seven serials and forty-four episodes, including two epic-length storylines: the eight episodes of The Invasion and the ten-episode The War Games.

E1The Dominators (1)
Aug 10, 1968
The TARDIS arrives on the planet Dulkis where the Doctor, Zoe and Jamie decide to have a quiet holiday. Only to find the Evil Dominators and their robotic slaves, The Quarks have arrived on a radioactive island, where they plan to detonate a bomb in the planet's core, which will turn the entire planet as source of radioactive fuel for their invasion fleet.

E2The Dominators (2)
Aug 17, 1968
The Doctor and Jamie are captured by the Dominators, who subject them to an intelligence test, while Zoe and Cully attempt to convince the Dulcian council of the threat.

E3The Dominators (3)
Aug 24, 1968
Zoe and Cully are captured by the Dominators and put to work alongside the survey team while the Doctor and Jamie decide to return to the island to help.

E4The Dominators (4)
Aug 31, 1968
The Doctor and Zoe are interrogated by Rago, who is planning to present his terms to the Dulcian council, while Jamie and Cully try to find a way to strike back against the Quarks.

E5The Dominators (5)
Sep 7, 1968
Jamie and Cully manage to rescue the Doctor's party and together they try to find a way to stop the Dominators before they destroy the entire planet.

E6The Mind Robber (1)
Sep 14, 1968
The TARDIS arrives in a white void, having made an emergency take-off to escape the volcanic eruption on Dulkis. The Doctor, Jamie and Zoe find themselves in the Land of Fiction, where characters from the imagination come to life, and The Master, the mysterious ruler, chooses the Doctor to take his place.

E7The Mind Robber (2)
Sep 21, 1968
With the TARDIS destroyed, the Doctor, Jamie and Zoe find themselves in a strange forest patrolled by mysterious soldiers.

E8The Mind Robber (3)
Sep 28, 1968
The Doctor realises that the travellers are trapped in a world where fiction is real and where creatures are a threat if people believe in them.

E9The Mind Robber (4)
Oct 5, 1968
The Doctor, Jamie and Zoe reach the citadel at the centre of the land, where they finally encounter the Master of the Land of Fiction.

E10The Mind Robber (5)
Oct 12, 1968
With Jamie and Zoe having been turned into fiction, the Doctor must find a way to save them without suffering the same fate or becoming part of the Master Brain.

E11The Invasion (1)
Nov 2, 1968
The Doctor and the newly formed UNIT must stop a Cybermen Invasion and a Sinister Industrialist in league with them

E12The Invasion (2)
Nov 9, 1968
The Doctor and Jamie are taken prisoner by their mysterious observers and have a reunion with an old friend while Zoe and Isobel carry out their own investigation of IE.

E13The Invasion (3)
Nov 16, 1968
The Doctor and Jamie return to the IE factory in search of Zoe and Isobel, where they meet with Professor Watkins and fall foul of Vaughn.

E14The Invasion (4)
Nov 23, 1968
The Doctor and Jamie enlist the help of UNIT to rescue Zoe and Isobel before trying to find out what Vaughn is really up to.

E15The Invasion (5)
Nov 30, 1968
The Doctor and Jamie tell the Brigadier about the Cybermen but with Rutledge under Vaughn's control he is powerless to act.

E16The Invasion (6)
Dec 7, 1968
Captain Turner manages to rescue Jamie and the others, while the Doctor begins working on a way to protect everyone from the Cybermen's hypno-sound signal.

E17The Invasion (7)
Dec 14, 1968
With the entire world unconscious apart from the Doctor and his friends, the Cybermen are poised to invade and only Zoe, the Brigadier and a missile crew can stop them.

E18The Invasion (8)
Dec 21, 1968
The Cybermen have launched their deadly megatron bomb which will destroy all life on Earth unless the Doctor can deactivate the homing signal.

E19The Krotons (1)
Dec 28, 1968
When the TARDIS arrives on the planet of the Gonds, the Doctor, Jamie and Zoe discover a world ruled and enslaved by the Krotons. The brightest Gonds are always chosen to serve as companions of the Krotons and are never seen again...

E20The Krotons (2)
Jan 4, 1969
Zoe is selected as a companion for the Krotons and the Doctor insists on joining her.

E21The Krotons (3)
Jan 11, 1969
Jamie is held prisoner by the Krotons who intend to recapture the Doctor and Zoe for their mental energy.

E22The Krotons (4)
Jan 18, 1969
Selris succeeds in drawing the Krotons out of the Dynatrope but Eelek agrees to hand the Doctor and Zoe over to them in return for their leaving the planet.

E23The Seeds of Death (1)
Jan 25, 1969
21st century Earth is entirely dependent on the T-Mat transport system but the control centre on the moon has stopped functioning. Meanwhile, the Doctor, Jamie and Zoe meet the one man who can solve the crisis.

E24The Seeds of Death (2)
Feb 1, 1969
Eldred agrees to supply a rocket for travel to the moon and the Doctor, Jamie and Zoe volunteer to crew it.

E25The Seeds of Death (3)
Feb 8, 1969
The Doctor, Jamie and Zoe make it to the moon and join forces with Phipps but the Ice Warriors have gained control of T-mat.

E26The Seeds of Death (4)
Feb 15, 1969
The Ice Warriors' seed pods beginning materialising all over the globe while Slaar decides to kill the Doctor by T-matting him into space.

E27The Seeds of Death (5)
Feb 22, 1969
The Doctor and his allies manage to return to Earth via T-mat only to find the Ice Warrior has attacked the weather control station.

E28The Seeds of Death (6)
Mar 1, 1969
The Doctor manages to create a rain storm to destroy the Martian fungus before trying to find a way to stop the Ice Warriors' invasion fleet.

E29The Space Pirates (1)
Mar 8, 1969
Space beacons are being destroyed by pirates, who are salvaging the argonite metal. When the Doctor, Jamie and Zoe arrive on one of the beacons, they are mistaken for pirates.

E30The Space Pirates (2)
Mar 15, 1969
With the Doctor, Jamie and Zoe trapped on a beacon segment, Hermack becomes suspicious of the unruly prospector Milo Clancey.

E31The Space Pirates (3)
Mar 22, 1969
The Doctor, Jamie and Zoe flee from the Space Corps with Clancey, who decides to seek refuge on Ta.

E32The Space Pirates (4)
Mar 29, 1969
The Doctor, Jamie and Zoe are held prisoner by the space pirates while Caven comes up with a plan to throw suspicion onto Clancey.

E33The Space Pirates (5)
Apr 5, 1969
Madeleine is revealed to be working with Caven, who comes up with a way to kill the Doctor and his friends whilst framing them for the piracy.

E34The Space Pirates (6)
Apr 12, 1969
With Clancey and Issigri trapped aboard the LIZ, the Doctor, Jamie and Zoe try to convince Madeleine to help them before Caven destroys Ta.

E35The War Games (1)
Apr 19, 1969
The Doctor, Jamie and Zoe realise they have arrived in the trenches of the First World War, where the sinister General Smythe accuses them of espionage.

E36The War Games (2)
Apr 26, 1969
The Doctor and Zoe manage to escape from Ransom and attempt to rescue Jamie from the military prison.

E37The War Games (3)
May 3, 1969
The Doctor and his friends realise the area is divided into different time zones and decide to return to the château to obtain a map from Smythe.

E38The War Games (4)
May 10, 1969
The Doctor and Zoe are transported to the control centre of the war games while Jamie and Lady Jennifer fall foul of American Revolution soldiers.

E39The War Games (5)
May 17, 1969
The Doctor attempts to rescue Zoe and Carstairs while Jamie and Lady Jennifer try to convince the resistance of the true nature of Von Weich and the others.

E40The War Games (6)
May 24, 1969
The scientist examines the captured resistance fighters and realises Jamie is a new arrival on the planet while the Doctor, Zoe and Carstairs try to rescue their friends.

E41The War Games (7)
May 31, 1969
The Doctor, Jamie and Carstairs manage to return to the 1917 zone only to be captured by Smythe, who orders the Doctor executed.

E42The War Games (8)
Jun 7, 1969
The Doctor and the processing machine have been taken by the Aliens but the resistance are making plans to attack the control centre.

E43The War Games (9)
Jun 14, 1969
To prove his loyalty to the Aliens, the Doctor is ordered to reprocess his friends while the Security Chief finally uncovers evidence of the War Chief's treachery.

E44The War Games (10)
Jun 21, 1969
The TARDIS is drawn to the planet of the Time Lords where both the Doctor and the War Lord are placed on trial.
It was the first series produced and broadcast in colour and the first set entirely in one time period and almost entirely on Earth (the latter of these factors would later be repeated for Season 26 and Series 1, although in those two cases there was no attempt at an in-universe explanation for confining the Doctor to the planet). Although the series did not have an overall story arc, it did feature a recurring subplot of the Doctor trying to adjust to life as an exile while trying to circumvent the restrictions placed upon him by the Time Lords, and began the process where the Doctor would try to gain more control over his TARDIS. Beginning with this series and continuing for the next few years, most storylines involve the Doctor working with UNIT.

E1Spearhead from Space (1)
Jan 3, 1970
As the newly-regenerated Doctor arrives on Earth, so does the Nestene too.

E2Spearhead from Space (2)
Jan 10, 1970
UNIT's attempts to locate the meteorites are hampered by the mysterious plastic Autons, being constructed by Channing at a nearby factory, while the Doctor makes another attempt to escape from the hospital.

E3Spearhead from Space (3)
Jan 17, 1970
Ransome manages to escape from the plastics factory and alert UNIT, prompting the Doctor and the Brigadier to start an investigation.

E4Spearhead from Space (4)
Jan 24, 1970
With UNIT's investigation being blocked by the Replica of Scobie, the Doctor and Liz visit Madame Tussaud's to try and find out more as Channing prepares to activate the Autons.

E5Doctor Who and the Silurians (1)
Jan 31, 1970
The Doctor and Liz are summoned to the Wenley Moor Research Centre by the Brigadier, after several staff members suffer nervous breakdowns.

E6Doctor Who and the Silurians (2)
Feb 7, 1970
The Doctor attempts to convince people there are monsters in the caves, prompting Major Baker to start shooting at a reptile man.

E7Doctor Who and the Silurians (3)
Feb 14, 1970
The Silurians contact Quinn for help in retrieving the creature while the Doctor and the Brigadier organise a search of the moors.

E8Doctor Who and the Silurians (4)
Feb 21, 1970
With Quinn dead, the Brigadier decides to take an armed party into the caves, prompting the Doctor to contact the Silurians himself.

E9Doctor Who and the Silurians (5)
Feb 28, 1970
Worried about the Old Silurian's growing friendship with the Doctor, the Young Silurian has the scientist infect Baker with a virus and then release him.

E10Doctor Who and the Silurians (6)
Mar 7, 1970
While the Doctor and Liz try to find a cure to the virus spread by Baker, the Young Silurian kills the Old Silurian and takes control of his people.

E11Doctor Who and the Silurians (7)
Mar 14, 1970
While Liz distributes the cure to the virus, the Doctor discovers the Silurians now plan to wipe out humanity by destroying the Van Allen Belt.

E12The Ambassadors of Death (1)
Mar 21, 1970
While the Brigadier investigates a loss of contact with Mars Probe 7, the Doctor realises signals coming from the probe are of extra-terrestrial origin.

E13The Ambassadors of Death (2)
Mar 28, 1970
UNIT retrieve the returned Recovery 7 but then Carrington hijacks it while the Doctor and Liz try to decode the signal he sent.

E14The Ambassadors of Death (3)
Apr 4, 1970
Carrington is holding the astronauts at a secret location but when he takes the Doctor, Liz and the Brigadier there they find they have been kidnapped.

E15The Ambassadors of Death (4)
Apr 11, 1970
Liz has been captured by Reegan's men and the Doctor begins to suspect Taltalian is more involved than he appeared.

E16The Ambassadors of Death (5)
Apr 18, 1970
The Doctor decides to take Recovery 7 back into space to search for the missing astronauts but Reegan sabotages the launch.

E17The Ambassadors of Death (6)
Apr 25, 1970
The Doctor speaks with the alien captain and learns the astronauts sent to Earth were ambassadors. However, before he can alert the authorities he is kidnapped by Reegan.

E18The Ambassadors of Death (7)
May 2, 1970
Carrington is planning to expose the aliens on live television and call for an interplanetary war and the Brigadier must rescue the Doctor and Liz in time to stop him.

E19Inferno (1)
May 9, 1970
England, the near future. UNIT is providing security and scientific support for the Stahlman project, an attempt to tap the Earth's core for energy. But things are already going wrong…

E20Inferno (2)
May 16, 1970
Strange deaths, men changing into monsters, hot green slime pouring out of the waste pipes – but Professor Stahlman is determined to press ahead with the Inferno project no matter what the cost!

E21Inferno (3)
May 23, 1970
The Doctor has vanished from the Inferno project… or has he? He finds himself in the same place, but everyone has changed… and the drilling is closer to its deadly conclusion.

E22Inferno (4)
May 30, 1970
In a parallel England, the Doctor tries desperately to convince his captors of the immense peril they are in. But they are convinced he is a spy. And penetration zero is getting close…

E23Inferno (5)
Jun 6, 1970
The parallel Inferno has broken through the Earth's crust, unleashing terrible seismic forces and dooming the planet. The Doctor hopes to return and save his world. But the bestial primords are closing in...

E24Inferno (6)
Jun 13, 1970
The Doctor is trapped in a parallel world that is going up in flames. Can he escape in time to save Earth in his own universe?

E25Inferno (7)
Jun 20, 1970
The Doctor has escaped the catastrophic destruction of a parallel world. But can he stop Stahlman before he destroys this one?
As of 2017, season 8 remains notable for being the season with the most number of regular characters. Not only did it see a new companion in the form of Jo Grant, but it featured a regular enemy — The Master — who was the first regular Time Lord enemy of the Doctor to appear more than twice, and an expanded regular UNIT cast that now included Sergeant Benton and Mike Yates in most episodes. Adding in returning regulars Jon Pertwee and Nicholas Courtney, the regular cast swelled to six.

E1Terror of the Autons (1)
Jan 2, 1971
When a Nestene Energy Unit is stolen and a radio telescope sabotaged, the Doctor is contacted by a Time Lord who tells him his old rival the Master is responsible.

E2Terror of the Autons (2)
Jan 9, 1971
Attempting to find out where Jo encountered the Master, the Doctor heads to the circus where he falls foul of Rossini.

E3Terror of the Autons (3)
Jan 16, 1971
The Doctor and the Brigadier head to Farrel's factory but the Master and the Autons have already left and are distributing plastic daffodils around the country.

E4Terror of the Autons (4)
Jan 23, 1971
The Doctor discovers the plastic daffodils are designed to fire a spray that asphyxiates people, causing havoc prior to the Nestene's arrival, but before he can alert anyone he and Jo are captured by the Master.

E5The Mind of Evil (1)
Jan 30, 1971
The Doctor and Jo head to Stangmoor Prison to investigate the Keller Machine, which drains the evil impulses from prisoners' minds, while UNIT are handling security at the first world peace conference.

E6The Mind of Evil (2)
Feb 6, 1971
The Doctor is recalled by UNIT to help investigate Cheng-Tiek's murder but is unaware that Chin-Lee is under the control of the Master.

E7The Mind of Evil (3)
Feb 13, 1971
Realising Chin-Lee has been using the power of the Keller Machine to carry out assassinations, the Doctor heads back to Stangmoor, only to find the Master has teamed up with Mailer to stage another riot.

E8The Mind of Evil (4)
Feb 20, 1971
With the Doctor and Jo being held prisoner, the Master convinces Mailer to help him steal the Thunderbolt.

E9The Mind of Evil (5)
Feb 27, 1971
The Doctor is forced to help the Master control the mind parasite while Yates finds out where the Thunderbolt has been taken only to be captured by the Master's men.

E10The Mind of Evil (6)
Mar 6, 1971
The Brigadier has recaptured Stangmoor but the Master still has control of the Thunderbolt and the Doctor must find a way to stop him and destroy the Keller Machine.

E11The Claws of Axos (1)
Mar 13, 1971
When a mysterious object lands near the Nuton power complex, UNIT investigate and encounter the Axons, a group of aliens who offer the mineral axonite, which can duplicate matter, as a gift.

E12The Claws of Axos (2)
Mar 20, 1971
The Doctor and Winser begin to analyse axonite while Chinn plots to secure its use exclusively for Britain.

E13The Claws of Axos (3)
Mar 27, 1971
The Doctor and Jo are being held prisoner by Axos while Chinn is forced to organise the worldwide distribution of axonite and the Master returns to the power complex to try and steal the TARDIS.

E14The Claws of Axos (4)
Apr 3, 1971
The Doctor and Jo escape from Axos but then the Doctor offers the Master a deal; if he helps him repair the TARDIS, they can flee Earth together.

E15Colony in Space (1)
Apr 10, 1971
The Time Lords take control of the TARDIS and the Doctor and Jo arrive on an Earth Colony in the 25th century, where a ruthless mining company are using a dinosaur-like creature to force the colonists to leave the planet.

E16Colony in Space (2)
Apr 17, 1971
The Doctor discovers an Interplanetary Mining Corporation ship has landed on the planet in order to mine its duralinium, while Norton begins causing trouble at the colony.

E17Colony in Space (3)
Apr 24, 1971
The Doctor makes it back to the colony and warns Ashe what Dent is up to but when Jo and Winton try to find proof they are captured.

E18Colony in Space (4)
May 1, 1971
The Doctor descends into the Primitive city to try and find Jo while the colonists receive a visit from the Adjudicator.

E19Colony in Space (5)
May 8, 1971
The Master offers to help the colonists in exchange for information on the Primitive city and forces the Doctor to act as a guide by taking Jo hostage.

E20Colony in Space (6)
May 15, 1971
The Doctor and the Master are taken into the Primitive city, where the Master hopes to find the doomsday weapon, while Dent forces the colonists to leave the planet even though their ship is likely to explode.

E21The Dæmons (1)
May 22, 1971
Earth, the near future. When an archaological dig at the village of Devil's End goes disastrously wrong, an ancient power begins to revive. Can even the Doctor withstand the power of the Daemons? And just what is the local vicar up to in his spare time?

E22The Dæmons (2)
May 29, 1971
With the Doctor frozen by the energy release from the barrow, Jo calls Yates and Benton for help, but when the Brigadier tries to join them he finds the village surrounded by a heat barrier.

E23The Dæmons (3)
Jun 5, 1971
The Doctor explains to his friends that the Master is trying to gain the power of the last of the Daemons, a race who influenced Earth's development, while the Master brings the rest of the village under his control.

E24The Dæmons (4)
Jun 12, 1971
The Master orders Bert to set a trap for the Doctor at the village while a concussed Jo makes for the cavern.

E25The Dæmons (5)
Jun 19, 1971
The Master decides to sacrifice Jo to Azal and when the Doctor and his friends try to intervene they come under attack from Bok.
It was noted for being the beginning of the end of the Doctor's exile on Earth, with the Doctor's TARDIS still under the control of the Time Lords (The Mutants) and restricted freedom (The Curse of Peladon and The Time Monster), as well as UNIT and the Master appearing less frequently in compared to the previous two series. As well as the return of the Daleks and the Ice Warriors, this series also introduced Alpha Centauri, Aggedor and the Silurians' aquatic cousins the Sea Devils.

E1Day of the Daleks (1)
Jan 1, 1972
When someone tries to assassinate diplomat Sir Reginald Styles, UNIT investigate the possibility his attacker came from the future.

E2Day of the Daleks (2)
Jan 8, 1972
Jo uses the guerrillas' time machine to travel to the 22nd century where the Controller tricks her into telling the Daleks where she's come from.

E3Day of the Daleks (3)
Jan 15, 1972
The Doctor forces the guerrillas to take him to the 22nd century where he is soon captured by the Controller.

E4Day of the Daleks (4)
Jan 22, 1972
The guerrillas infiltrate the Daleks' base to rescue the Doctor and Jo and ask them to return to their own time and alter history before the 20th century is plunged into a Third World War.

E5The Curse of Peladon (1)
Jan 29, 1972
The Doctor and Jo arrive on the medieval planet Peladon, where the Doctor is mistaken for the Earth Delegate of the Galactic Federation and Jo is mistaken for a princess.

E6The Curse of Peladon (2)
Feb 5, 1972
The Doctor is convinced the Ice Warriors are trying to sabotage the conference but his attempts to prove it see him accused of sacrilege.

E7The Curse of Peladon (3)
Feb 12, 1972
The Doctor is sentenced to fight Grun to the death and his attempt to escape leads to an encounter with Aggedor.

E8The Curse of Peladon (4)
Feb 19, 1972
Hepesh's plan has been exposed but he is still determined to prevent Peladon joining the Galactic Federation by leading a rebellion against the King.

E9The Sea Devils (1)
Feb 26, 1972
The Doctor and Jo visit the Master at his island prison where the Doctor becomes curious about a number of ships sinking in the area.

E10The Sea Devils (2)
Mar 4, 1972
The Doctor and Jo are trapped on the fort by a Sea Devil while the Master convinces Trenchard to help him steal some electronic components.

E11The Sea Devils (3)
Mar 11, 1972
The Doctor is held prisoner by Trenchard while the Master attempts to contact the Sea Devils.

E12The Sea Devils (4)
Mar 18, 1972
The Sea Devils attack the island prison and rescue the Master, prompting the Doctor to venture underwater to try and contact them.

E13The Sea Devils (5)
Mar 25, 1972
The Doctor is taken to the Sea Devils' underwater colony where he tries to make peace with the creatures, only for the navy to attack the base.

E14The Sea Devils (6)
Apr 1, 1972
The Sea Devils take over the naval base and the Doctor is forced to help the Master find a way to revive their colony.

E15The Mutants (1)
Apr 8, 1972
The Doctor and Jo arrive on the planet Solos, on a assignment by the Time Lords, where they learn that the native Solonians are mutating into ant-like mutant creatures...

E16The Mutants (2)
Apr 15, 1972
Ky transports himself and Jo down to Solos and the Marshal only agrees to help her if the Doctor assists Professor Jaeger in altering Solos' atmosphere.

E17The Mutants (3)
Apr 22, 1972
The Doctor and Varan travel down to Solos to search for Jo and Ky but the Marshal orders his men to pursue them.

E18The Mutants (4)
Apr 29, 1972
The Doctor and his friends are led to safety by Professor Sondergaard, who tries to help the Doctor translate the tablets.

E19The Mutants (5)
May 6, 1972
The Marshal's premature use of Jaeger's experiment is threatening to destroy Solos' atmosphere and the Doctor returns to Skybase to try and correct the damage.

E20The Mutants (6)
May 13, 1972
The Doctor is forced to help the Marshal cover up his actions with the Investigator but Jo and the others attempt to escape to expose him.

E21The Time Monster (1)
May 20, 1972
UNIT are invited to observe a demonstration of the new TOMTIT machine, unaware its creator, Professor Thascales, is actually the Master.

E22The Time Monster (2)
May 27, 1972
The Doctor realises the Master is trying to harness the power of Kronos, last of the Chronovores, but is unaware Percival is harbouring him at the institute.

E23The Time Monster (3)
Jun 3, 1972
The Master enlists the help of Krasis to control Kronos while Yates tries to bring the TARDIS to the institute only to come under attack from dangers from the past.

E24The Time Monster (4)
Jun 10, 1972
The Master prepares to travel back to Atlantis but the Doctor links his TARDIS to the Master's to try and stop him.

E25The Time Monster (5)
Jun 17, 1972
Both TARDISes reach Atlantis, where the Doctor befriends King Dalios while the Master enlists the help of Queen Galleia to try and obtain the crystal of Kronos.

E26The Time Monster (6)
Jun 24, 1972
The Doctor enters the labyrinth to try and protect Jo from the minotaur but the Master has seized control of Atlantis and prepares to summon Kronos again.
William Hartnell returned in a cameo as the First Doctor and Patrick Troughton in a more substantial role as the Second Doctor in The Three Doctors. This story marked the end of the Doctor's exile on Earth, opening up the series to more off-world adventures and beginning a gradual reduction of UNIT-related stories.

E1The Three Doctors (1)
Dec 30, 1972
England, the near future. A strange anti-matter creature arrives on Earth and attacks UNIT HQ. It seems to be specifically seeking the Doctor out - but why? With the Time Lords themselves unable to help, it seems the only person who can help the Doctor is himself - or selves...

E2The Three Doctors (2)
Jan 6, 1973
The third Doctor and Jo find themselves on an artificial world inside the black hole while the second Doctor tries to find a way to control the organism.

E3The Three Doctors (3)
Jan 13, 1973
The Time Lord Omega reveals himself to the third Doctor along with plans for vengeance against his own kind.

E4The Three Doctors (4)
Jan 20, 1973
Omega reveals the purpose behind bringing the Doctor to his antimatter world, but the Doctor(s) discover a startling fact about Omega that he didn't know himself and eventually strike a bargain.

E5Carnival of Monsters (1)
Jan 27, 1973
The Doctor attempts to test his new dematerialisation circuit by taking Jo to Metebelis Three but instead the TARDIS arrives in the hold of a 1920s cargo ship.

E6Carnival of Monsters (2)
Feb 3, 1973
The Doctor and Jo attempt to find a way out of the Scope but, when Vorg attempts to entertain the Minorans, the crew of the Bernice suddenly become a lot more dangerous.

E7Carnival of Monsters (3)
Feb 10, 1973
The Doctor and Jo return to the Bernice to try and aid their escape but find themselves pursued by the Drashigs.

E8Carnival of Monsters (4)
Feb 17, 1973
The Doctor escapes from the Scope and joins forces with Vorg to try and save its inhabitants but Kalik is still determined to use the Drashigs to start a rebellion.

E9Frontier in Space (1)
Feb 24, 1973
The Doctor and Jo land on a spaceship in the far future as it is attacked by Ogrons, which the human crew see as Draconians. The Doctor and Jo are taken to Earth as spies.

E10Frontier in Space (2)
Mar 3, 1973
The Doctor and Jo are taken to Earth, where both humans and Draconians believe them to be a spy for the other side.

E11Frontier in Space (3)
Mar 10, 1973
The Doctor is sentenced to life imprisonment at a lunar penal colony while Jo encounters an old enemy.

E12Frontier in Space (4)
Mar 17, 1973
The Master rescues the Doctor from the lunar penal colony, aiming to take him and Jo to the Ogrons' planet, and the Doctor's attempt to escape leaves him stranded in space.

E13Frontier in Space (5)
Mar 24, 1973
The Doctor, Jo and the Master are taken to Draconia, where the Doctor tries to convince the Draconians of the truth.

E14Frontier in Space (6)
Mar 31, 1973
The Doctor, Williams and the Draconian Prince head to the Ogrons' planet to find evidence of the Master's actions but the Master tricks Jo into leading them into a trap.

E15Planet of the Daleks (1)
Apr 7, 1973
The planet Spiridon, the year 2540. The Doctor and Jo arrive on the trail of the Daleks, and find unexpected allies in the shape of a Thal suicide squad. But what has brought the Daleks here in the first place?

E16Planet of the Daleks (2)
Apr 14, 1973
The Doctor is captured by the Daleks, while Jo is rescued by a friendly Spridon named Wester.

E17Planet of the Daleks (3)
Apr 21, 1973
The Doctor and Codal escape from their cell and meet up with the Thal commandos who are trying to get into the Dalek base.

E18Planet of the Daleks (4)
Apr 28, 1973
The Doctor and his friends escape from the Dalek base, prompting the Daleks to devise a plan to wipe them out.

E19Planet of the Daleks (5)
May 5, 1973
The Doctor and his friends ambush two Daleks as part of their plan to get back into the city, but the Daleks are on the verge of unleashing their virus.

E20Planet of the Daleks (6)
May 12, 1973
The Doctor and his friends prepare to refreeze the Dalek army but the Dalek Supreme has arrived on the planet determined to destroy them all.

E21The Green Death (1)
May 19, 1973
While the Doctor plans a holiday to Metebelis Three, Jo and the Brigadier are intrigued by a mysterious death at a coal mine in Llanfairfach, which is being blamed on local company Global Chemicals.

E22The Green Death (2)
May 26, 1973
The Doctor and the Brigadier attempt to rescue Jo and Bert from the mine but Global Chemicals prove distinctly uncooperative.

E23The Green Death (3)
Jun 2, 1973
The Doctor and Jo manage to escape from the mine with a maggot egg but Stevens is determined to stop them analysing it.

E24The Green Death (4)
Jun 9, 1973
The Brigadier calls in a full UNIT force to deal with the giant maggots while the Doctor infiltrates Global Chemicals to find out what is really going on.

E25The Green Death (5)
Jun 16, 1973
The Doctor manages to escape from BOSS with help from Yates and discovers Cliff has been infected by a giant maggot.

E26The Green Death (6)
Jun 23, 1973
The Doctor attempts to destroy the giant maggots and cure Cliff but the real threat is BOSS, who is poised to take over all the world's computers.
It was Jon Pertwee's final season as the Doctor and included, very briefly, the first appearance of Tom Baker as the Fourth Doctor. The Time Warrior, the season opener, introduced Sarah Jane Smith, who was a frequently featured character in the Doctor Who universe decades after her departure in Season 14. The same story also, for the first time, named the Doctor's homeworld as Gallifrey. UNIT also began to be phased out of the series during this season.

E1The Time Warrior (1)
Dec 15, 1973
England, the 12th century. Robber baron Irongron is recruited by Linx, a Sontaran warrior whose starship has been forced down on Earth. Linx is forced to use a time-travel device to steal resources and scientists from the future to repair his ship, but in doing so involves UNIT and the Doctor...

E2The Time Warrior (2)
Dec 22, 1973
The Doctor tracks the missing scientists to Irongron's castle, where Linx is using them to repair his spaceship and construct advanced weapons for Irongron.

E3The Time Warrior (3)
Dec 29, 1973
The Doctor escapes the castle with Sarah and Hal and must persuade Sir Edward to trust him before Irongron launches an attack on them.

E4The Time Warrior (4)
Jan 5, 1974
The Doctor attempts to return the scientists to their own time, before Linx tries to use his spaceship and destroys the entire castle.

E5Invasion (1)
Jan 12, 1974
The Doctor and Sarah return to London in the present day only to find the city strangely deserted, while nearby UNIT are dealing with a series of monster appearances.

E6Invasion of the Dinosaurs (2)
Jan 19, 1974
The Doctor attempts to solve the mystery of the monster invasion. His first move - the capture of a dinosaur.

E7Invasion of the Dinosaurs (3)
Jan 26, 1974
Yates sabotages the Doctor's equipment to stop him finding the location of Whitaker's base but then the tyrannosaur escapes, placing Sarah in danger.

E8Invasion of the Dinosaurs (4)
Feb 2, 1974
Sarah attempts to find a way off the spaceship while the Doctor tries to track down the source of the time displacements.

E9Invasion of the Dinosaurs (5)
Feb 9, 1974
The Doctor has been framed as the monster maker by Finch and is on the run from the army, while Sarah attempts to alert UNIT to what Grover is up to.

E10Invasion of the Dinosaurs (6)
Feb 16, 1974
The Doctor is rescued from Finch by the Brigadier and Benton and tries to persuade them to stop Grover before millions of people are erased from history.

E11Death to the Daleks (1)
Feb 23, 1974
The barren planet Exxilon, some time in the future. The TARDIS is forced down by a total power failure and the Doctor and Sarah meet a stranded Earth crew who came here to mine for priceless medical supplies. But what is causing the power failures? And why have the Daleks come here too?

E12Death to the Daleks (2)
Mar 2, 1974
The Doctor and the MSC crew join forces with the Daleks to mine the parrinium, only to come under attack from the Exxilons.

E13Death to the Daleks (3)
Mar 9, 1974
The Doctor and Sarah meet up with Bellal, who helps them escape from the Daleks and explains the origin of the City.

E14Death to the Daleks (4)
Mar 16, 1974
The Doctor and Bellal continue to penetrate the City's defences while Sarah and Jill try to stop the Daleks leaving with the parrinium.

E15The Monster of Peladon (1)
Mar 23, 1974
The planet Peladon, some time in the future. Mining disputes threaten the peace of the planet, and as the Doctor and Jo arrive, it seems that the ghost of Aggedor walks once more...

E16The Monster of Peladon (2)
Mar 30, 1974
The Doctor is rescued by Gebek, prompting him to try and help the miners, but his advice results in Ettis launching another attack on the armoury.

E17The Monster of Peladon (3)
Apr 6, 1974
The Doctor and Sarah pacify Aggedor and the Doctor encourages the Queen to make peace with the miners, but Ortron soon has him under arrest again.

E18The Monster of Peladon (4)
Apr 13, 1974
The Ice Warriors take control of the planet and force the miners to return to work but Ettis takes the opportunity to try and destroy the citadel.

E19The Monster of Peladon (5)
Apr 20, 1974
Sarah and Alpha Centauri decide to try and alert the Federation to what the Ice Warriors are up to but first they have to escape from the throne room.

E20The Monster of Peladon (6)
Apr 27, 1974
The Doctor turns the Aggedor spirit against the Ice Warriors to aid the Peladonians in their battle but Eckersley attacks him with the security system.

E21Planet of the Spiders (1)
May 4, 1974
While the Doctor carries out an investigation into ESP, Mike Yates asks Sarah to look into some strange goings on at a meditation centre he's attending.

E22Planet of the Spiders (2)
May 11, 1974
Lupton forms an alliance with the spider to steal the Doctor's blue crystal, while Sarah and Mike attempt to alert people to what they've seen.

E23Planet of the Spiders (3)
May 18, 1974
The Doctor and Sarah head to the meditation centre to try and get the crystal back while Lupton prepares to return it to Metebelis Three. But all their plans are disrupted when it is stolen by Tommy.

E24Planet of the Spiders (4)
May 25, 1974
Sarah is captured by the spiders' guards while the Doctor tries to help Arak and the others strike back against the spiders.

E25Planet of the Spiders (5)
Jun 1, 1974
The Doctor escapes from the spiders' larder only to encounter the Great One, while Sarah makes a deal with the Queen Spider.

E26Planet of the Spiders (6)
Jun 8, 1974
K'Anpo persuades the Doctor he must face his fear and return the crystal to the Great One. But first they need to get past Barnes and his men.
All the stories in this season were interconnected, several forming a loose story arc relating to Space Station Nerva. The Cybermen returned to the series for the first time since The Invasion. Genesis of the Daleks, a story which introduced Davros and showed the creation of the Daleks, is one of the most famous of all Doctor Who serials.

E1Robot (1)
Dec 28, 1974
The Doctor changes form again. Before he has fully re-covered, something of colossal strength steals a secret weapon, and the convalescent Doctor starts to investigate.

E2Robot (2)
Jan 4, 1975
The Doctor and Sarah Jane become convinced Think Tank are behind the electronic component thefts but are unable to stop them carrying out another raid.

E3Robot (3)
Jan 11, 1975
Sarah Jane and Kettlewell infiltrate an SRS meeting to try and find out what Miss Winters is up to but there is a surprise in store.

E4Robot (4)
Jan 18, 1975
UNIT attempt to get into the bunker to stop Miss Winters setting off the world's nuclear missiles but first they have to get past the K1.

E5The Ark in Space (1)
Jan 25, 1975
The Doctor's attempt to give Harry a trip in the TARDIS sees the two of them and Sarah Jane arriving onboard a space station in the far future, with some rather deadly security mechanisms.

E6The Ark in Space (2)
Feb 1, 1975
The Doctor and Harry revive the Ark's medtech, Vira, to help Sarah Jane. But when station commander Noah is revived, he becomes suspicious of the newcomers.

E7The Ark in Space (3)
Feb 8, 1975
Knowing that Noah has been infected by the Wirrn, the Doctor persuades Vira to halt the reviving of her people, knowing it will place them in danger as well.

E8The Ark in Space (4)
Feb 15, 1975
The Doctor tries to protect the humans still in cryogenic suspension from the Wirrn, who are determined to use Earth as their new breeding ground.

E9The Sontaran Experiment (1)
Feb 22, 1975
The Doctor, Sarah Jane and Harry teleport to Earth to ensure the planet is safe for the survivors on board Nerva Beacon to return and reinhabit their world. A Sontaran named Styre has captured a group of humans and is conducting experiments on them to discover the human body's weaknesses, as part of the Sontaran's goal for domination of the galaxy.

E10The Sontaran Experiment (2)
Mar 1, 1975
The Doctor learns that Styre has been experimenting on the Galsec crewmembers to pave the way for a Sontaran invasion of Earth and decides the only way to halt his plans is to challenge him to a duel.

E11Genesis of the Daleks (1)
Mar 8, 1975
The planet Skaro, the distant past. The Time Lords divert the Doctor, Sarah Jane and Harry to this war-torn world, and give the Doctor a mission: the evil of the Daleks is about to be born here, and the Doctor is to try to ensure they evolve into less lethally aggressive beings - or, failing that, to avert their creation altogether. But has even the Doctor the right to commit genocide?

E12Genesis of the Daleks (2)
Mar 15, 1975
The Doctor and Harry are taken to the Kaled bunker where Davros is preparing to demonstrate the Daleks, while Sarah Jane is captured by the Thals and taken to their city as a slave worker.

E13Genesis of the Daleks (3)
Mar 22, 1975
The Doctor and Harry head to the Kaled city to alert the authorities to Davros' plans while Sarah Jane and Sevrin are forced to work on the completion of the Thals' rocket.

E14Genesis of the Daleks (4)
Mar 29, 1975
The Doctor fails to prevent the Thals from destroying the Kaled city but they don't have long to enjoy their victory before the Daleks attack.

E15Genesis of the Daleks (5)
Apr 5, 1975
The Doctor is forced to give Davros full details of future Dalek victories but opposition to Davros' plans is growing among the Kaleds and soon there is open rebellion.

E16Genesis of the Daleks (6)
Apr 12, 1975
Gharman tries to convince the Kaleds to vote against the Dalek project but Davros has a trick up his sleeve, while the Doctor works to destroy the tape recording of Dalek victory and the Thals plan an intervention of their own.

E17Revenge of the Cybermen (1)
Apr 19, 1975
The orbit of Jupiter, the 25th century. Arriving back on the Nerva Beacon much earlier in history, the Doctor and his friends discover the satellite beset by space plague while its crew struggles to keep space traffic away from Voga, the newest moon of Jupiter. But what is the connection between Voga, the plague, and some old enemies of the Doctor?

E18Revenge of the Cybermen (2)
Apr 26, 1975
The Doctor transmits Sarah Jane and Harry down to Voga to cure Sarah Jane of the Cybermat's poison but Kellman's sabotage means he is unable to bring them back.

E19Revenge of the Cybermen (3)
May 3, 1975
The Cybermen force the Doctor, Stevenson and Lester to carry bombs to the centre of Voga while Sarah Jane, Harry and Tyrum decide to contact Vorus.

E20Revenge of the Cybermen (4)
May 10, 1975
The Doctor, Harry and Lester try to destroy the Cybermen's relay device, while the Vogans prepare to destroy Nerva even though Sarah Jane is still on board.
It was during this season that the Doctor cut ties to UNIT (after Terror of the Zygons, the Brigadier would not appear again until Mawdryn Undead in 1983, and The Seeds of Doom marked the last occasion to date that the Doctor was explicitly said to be working for UNIT - as opposed to working with them as occasions warranted). Several of the serials in this season, particularly Pyramids of Mars and The Brain of Morbius, are among the best-known of the 1970s-era storylines. Though it was aired as a part of Season 13, Terror of the Zygons was actually filmed as part of the previous season; this holdover allowed the series to switch back to an autumn season start.

E1Terror of the Zygons (1)
Aug 30, 1975
Scotland, the near future. Something is smashing oil rigs off the Scottish coast, and UNIT have been called in to investigate. The Brigadier summons the Doctor to Earth to help in the investigation, but it soon becomes clear some kind of alien presence is at work...

E2Terror of the Zygons (2)
Sep 6, 1975
The Zygon traps the Doctor and Sarah Jane in a decompression chamber while Harry is taken to the aliens' underwater ship.

E3Terror of the Zygons (3)
Sep 13, 1975
The Doctor and the Brigadier begin to realise who the Zygon imposters among them are while Sarah Jane discovers a secret tunnel to the underwater ship.

E4Terror of the Zygons (4)
Sep 20, 1975
UNIT attempt to track down the Zygon ship while Broton prepares to have the Skarasen attack London.

E5Planet of Evil (1)
Sep 27, 1975
The Doctor and Sarah answer a distress call and find themselves on Zeta Minor, the last planet of the known universe, where a Morestran expedition has gone missing.

E6Planet of Evil (2)
Oct 4, 1975
The Doctor realises that Zeta Minor lies on the boundary between the universes of matter and anti-matter and something on the planet won't let the Morestrans leave.

E7Planet of Evil (3)
Oct 11, 1975
The Doctor makes a deal with the Anti-Matter Beast to return all the anti-matter to the planet but Sorenson is determined to continue his research.

E8Planet of Evil (4)
Oct 18, 1975
The Doctor tries to convince Sorenson to sacrifice himself for the rest of the crew but Salamar's attempt to deal with the situation causes their problems to multiply.

E9Pyramids of Mars (1)
Oct 25, 1975
The Doctor and Sarah are drawn off course and, instead of UNIT HQ, they arrive on the same site in 1911.

E10Pyramids of Mars (2)
Nov 1, 1975
The Doctor, Sarah and Laurence try to find a way to sever Sutekh's link to the mummies while poacher Ernie Clements finds the priory surrounded by a forcefield.

E11Pyramids of Mars (3)
Nov 8, 1975
The Doctor and Sarah try to destroy Sutekh's rocket but the Osiran's mental powers prove too great for them.

E12Pyramids of Mars (4)
Nov 15, 1975
Sutekh forces the Doctor to transport Scarman and a mummy to Mars, where the Doctor and Sarah try to stop them destroying the Eye of Horus.

E13The Android Invasion (1)
Nov 22, 1975
The Doctor and Sarah return to Earth in the present day to find a strangely deserted village and woods stalked by white-clad figures.

E14The Android Invasion (2)
Nov 29, 1975
The Doctor suspects Crayford brought something to Earth in his rocket, as he and Sarah find themselves hunted by UNIT.

E15The Android Invasion (3)
Dec 6, 1975
The Doctor is captured by Styggron and left to die in the destruction of the fake village but Sarah escapes from the disorientation chamber to try and rescue him.

E16The Android Invasion (4)
Dec 13, 1975
The Doctor and Sarah reach Earth and try to warn the research centre about the Kraal invasion before Styggron unleashes his virus.

E17The Brain of Morbius (1)
Jan 3, 1976
The storm-lashed planet Karn. Near a graveyard of crashed starships, the demented surgeon Solon hides in his castle, the last acolyte of the Time Lord despot Morbius. He only needs one final item to make his master live again... and then the Doctor and Sarah arrive...

E18The Brain of Morbius (2)
Jan 10, 1976
The Doctor is captured by the Sisterhood, and Sarah Jane is blinded freeing him. The Doctor has no choice but to go back for a cure, unaware that he is leaving Sarah Jane in the hands of a treacherous Dr. Solon and the renegade Time Lord Morbius.

E19The Brain of Morbius (3)
Jan 17, 1976
While the Doctor goes to confront the Sisterhood to seek a cure for Sarah Jane's blindness, Solon realizes that he must transfer Morbius' brain into a new body before it is too late.

E20The Brain of Morbius (4)
Jan 24, 1976
Morbius lives once more, but as a rampaging beast. The Doctor is forced to ally with Dr. Solon to bring him to heel, but the two disagree about what should happen to Morbius.

E21The Seeds of Doom (1)
Jan 31, 1976
The Antarctic, the near future. A strange seed-pod is unearthed from 20-thousand-year-old ice. The Doctor and Sarah go to investigate, but are too late to prevent the pod infecting a scientist and unleashing a threat to all animal life on Earth...

E22The Seeds of Doom (2)
Feb 7, 1976
Two employees of the millionaire Harrison Chase arrive at the Antarctic base, and they will stop at nothing to get hold of the second seed-pod.

E23The Seeds of Doom (3)
Feb 14, 1976
The Doctor and Sarah Jane return to England after their Antarctic ordeal and Chase tries to eliminate them, but they escape and track him down at his estate, where he is preparing to open the Krynoid pod.

E24The Seeds of Doom (4)
Feb 21, 1976
The Doctor is captured by Chase, who plans to breed the stolen Krynoid pod. He is placed in an automated compost hopper and only Sarah Jane can save him... but will she make it before the Krynoid grows to fruition ?

E25The Seeds of Doom (5)
Feb 28, 1976
The Krynoid grows to a monstrous size and traps the Doctor and the others in a cottage. The creature demands they turn over the Doctor, while Chase seeks to make an alliance with the alien vegetation.

E26The Seeds of Doom (6)
Mar 6, 1976
The Doctor, Sarah Jane, and Scorby are trapped in the manor as a possessed Chase stalks them from within, while the gigantic Krynoid prepares to crush them from without. Worse, the alien plant is ready to germinate, spreading its seeds across England.
The season is notable for the departure of Sarah Jane Smith in The Hand of Fear and for The Deadly Assassin, a story set entirely on Gallifrey which expounded greatly upon the culture and history of the Time Lords, and the Eye of Harmony and Rassilon are mentioned for the first time. The Deadly Assassin also featured the return of the Decayed Master in a degenerated form and had the Doctor without a companion for an entire story for the first time in the history of Doctor Who. This story is also the first time the limit of regenerations is set.

E1The Masque of Mandragora (1)
Sep 4, 1976
The Doctor and Sarah arrive in Renaissance Italy unaware that they have brought a deadly alien energy force with them.

E2The Masque of Mandragora (2)
Sep 11, 1976
The Mandragora energy joins forces with the secret Brotherhood of Demnos. Count Federico plots to steal the Dukedom of San Martino from his nephew, Giuliano.

E3The Masque of Mandragora (3)
Sep 18, 1976
Tempted by the promises of ultimate power offered by Mandragora, Hieronymous plots to eliminate the threat posed by the Doctor and uses an unwitting Sarah as his weapon.

E4The Masque of Mandragora (4)
Sep 25, 1976
As the leading scholars of the era assemble in the palace for the masque, Mandragora prepares to attack, intent on sending the world into a new dark age.

E5The Hand of Fear (1)
Oct 2, 1976
England, the near future. The TARDIS materialises in a quarry and Sarah is trapped under a rockfall. But what is the origin of the fossilised hand she is found gripping ? And who is the Eldrad she keeps mumbling about ?

E6The Hand of Fear (2)
Oct 9, 1976
The Doctor and Professor Watson struggle to stop first Sarah Jane and then Driscoll from obeying the strange and dangerous orders of the stone hand, which has suddenly come to life.

E7The Hand of Fear (3)
Oct 16, 1976
The energy of the reactor has returned the mysterious Eldrad to life. The Doctor agrees to take her back to Kastria. But what is waiting for them there?

E8The Hand of Fear (4)
Oct 23, 1976
The Doctor and Sarah race to save the mortally wounded Eldrad. But they find that everything is not quite as she told them.

E9The Deadly Assassin (1)
Oct 30, 1976
Gallifrey, planet of the Time Lords. Summoned home by a premonition of murder, the Doctor discovers a dark conspiracy at the highest levels of Time Lord society... and his oldest enemy, who poses a threat to the existence of Gallifrey itself...

E10The Deadly Assassin (2)
Nov 6, 1976
The President of the High Council has been killed and the Doctor is the prime suspect. The Time Lords are eager to dispense quick justice and the Doctor must race agains the clock to discover the truth... and an old enemy.

E11The Deadly Assassin (3)
Nov 13, 1976
The Doctor has entered the computation Matrix to prove his innocence. But his opponent is prepared for him and the two engage in a mental duel to the death.

E12The Deadly Assassin (4)
Nov 20, 1976
The Doctor has won his fight in the Matrix and revealed the assassin. But the Master is not defeated and sets a plan in motion that could destroy the Time Lords.

E13The Face of Evil (1)
Jan 1, 1977
An unnamed planet, the distant future. Arriving in a place that seems oddly familiar, the Doctor finds the savage Sevateem tribe battling to free their captive god, Xoanon, from the Evil One and his Tesh servants. But can the whole situation really be the Doctor's fault?

E14The Face of Evil (2)
Jan 8, 1977
The Sevateem launch another attack to try to free Xoanon as the Doctor tries to figure out his role in their past. But his only chance to win their trust is to face a deadly test.

E15The Face of Evil (3)
Jan 15, 1977
The Doctor has broken through the barrier and found the Tesh. But he comes to an awful realisation about Xoanon.

E16The Face of Evil (4)
Jan 22, 1977
The Doctor tries to fix the mad computer Xoanon. But it is determined to stop him – even if it must destroy the entire world!

E17The Robots of Death (1)
Jan 29, 1977
An unnamed world, an unknown time. A vast mining vessel trawls a sea of mineral sand for valuable ores, the tiny human crew served by an army of humanoid robots. But as the Doctor and Leela arrive, one of the crew is found murdered... and if they didn't do it, who did?

E18The Robots of Death (2)
Feb 5, 1977
The Doctor and Leela are suspected of murder. But the real foe is using robots to cut down the crew – and even sabotage the sand miner itself!

E19The Robots of Death (3)
Feb 12, 1977
One of the crew is the insane Taren Capel, who is using robots to carry out the murders. The Doctor discovers that there are also others who aren't what they appear to be either.

E20The Robots of Death (4)
Feb 19, 1977
The Doctor and the surviving humans fight for their lives against Taren Capel and his growing army of deadly robots.

E21The Talons of Weng-Chiang (1)
Feb 26, 1977
London, the 1890s. As magician Li H'Sen Chang captivates audiences, a spate of disappearances amongst young women goes largely unnoticed. But almost upon their arrival, the Doctor and Leela find themselves confronting the feared Tong of the Black Scorpion, and a menace from another time. And there's something fishy in the sewers, too...

E22The Talons of Weng-Chiang (2)
Mar 5, 1977
The Doctor and Leela investigate the strange events in Victorian London. But a mysterious masked figure lurks in the shadows.

E23The Talons of Weng-Chiang (3)
Mar 12, 1977
As Li H'Sen Chang works to secure the time cabinet, Leela pursues and investigates his master – the mysterious and murderous Weng-Chiang.

E24The Talons of Weng-Chiang (4)
Mar 19, 1977
The Doctor and Leela attend Li H'Sen Chang's performance, hoping to confront the magician. But his master Weng-Chiang has other plans…

E25The Talons of Weng-Chiang (5)
Mar 26, 1977
The Doctor and his allies try to track down Weng-Chiang before he can activate the time cabinet and possibly destroy London.

E26The Talons of Weng-Chiang (6)
Apr 2, 1977
The Doctor and Weng-Chiang have their final confrontation in the mysterious House of the Dragon -- watched by the evil duplicitous Mr. Sin.
This season introduced K9 to the series and saw the departure of Leela. It was originally intended to include Terrance Dicks' story The Vampire Mutations but, due to a major BBC production of Dracula, it was postponed. It later became Season 18's State of Decay. To replace it, Dicks quickly scripted the season opener, Horror of Fang Rock. The season took a two week transmission break over the 1977 Christmas period, between the broadcast of part four of The Sun Makers and part one of Underworld.

E1Horror of Fang Rock (1)
Sep 3, 1977
The English channel, the 1900s AD. The TARDIS lands on barren Fang Rock, inhabited until now only by three lighthouse keepers. But what is the strange fog covering the island, and can it be connected to the falling star sighted earlier that night?

E2Horror of Fang Rock (2)
Sep 10, 1977
The survivors of a wrecked ship are stranded with the lighhouse crew on Fang Rock as a deadly menace slithers through the fog. Has the Beast of Fang Rock returned?

E3Horror of Fang Rock (3)
Sep 17, 1977
The Doctor barricades everyone in the lighthouse to protect them from the mysterious deadly creature in the fog. But it may already be inside, biding its time…

E4Horror of Fang Rock (4)
Sep 24, 1977
The Rutan starts picking off the surviving humans one by one as the Doctor and Leela struggle to defeat not only the alien but an entire fleet waiting to occupy Earth.

E5The Invisible Enemy (1)
Oct 1, 1977
Deep space, 5000AD. An Earth supply shuttle is infected by a strange sentient space-borne virus, which quickly spreads to the crew of the refuelling station on the moon Titan. Even worse, the Doctor himself falls victim. But why is Leela immune, and what is the virus's ultimate goal?

E6The Invisible Enemy (2)
Oct 8, 1977
Leela and Lowe take the Doctor to the Bi-Al Foundation for help. But how can they cure an infection of the mind?

E7The Invisible Enemy (3)
Oct 15, 1977
Miniaturised clones of the Doctor and Leela are injected into his brain. But they must now fight the virus on its own level. And its servants are closing in around them.

E8The Invisible Enemy (4)
Oct 22, 1977
The Nucleus, now grown to human size, is determined to spawn and take over the Galaxy. Only the Doctor and Leela can stop it.

E9Image of the Fendahl (1)
Oct 29, 1977
England, the late 1970s. At Fetch Priory, Dr Fendelman's experiments with the new Time Scanner are disrupted by the mysterious death of a hiker, nearby. Then there's the mysterious skull, also being used as part of his work. A skull that seems to predate the evolution of mankind. What is the true role of the Fendahl in humanity's evolution?

E10Image of the Fendahl (2)
Nov 5, 1977
The mystery surrounding the strange skull deepens. Thea is slowly succumbing to its influence while the Doctor prepares to battle a creature from mythology.

E11Image of the Fendahl (3)
Nov 12, 1977
While Max prepares to tap supernatural forces beyond imagining, the Doctor and Leela investigate the legend of the Fendahl.

E12Image of the Fendahl (4)
Nov 19, 1977
The Fendahl is returning to life, ready to consume everything in its path. Can the Doctor find a way to kill death itself?

E13The Sun Makers (1)
Nov 26, 1977
Pluto, the distant future. The planet has been terraformed and is now orbited by artificial suns, provided by the rapacious company who ruthlessly exploit the relocated human workforce. The Doctor, Leela, and K9 arrive and befriend a luckless drone worker, but they must flee with him to the dark undercity...

E14The Sun Makers (2)
Dec 3, 1977
The Doctor has been captured by the Gatherer. Leela works to free him but the Gatherer is already laying his own plans…

E15The Sun Makers (3)
Dec 10, 1977
Now Leela is the prisoner of the Collector. He knows of the Doctor and is determined to rid himself of both of them.

E16The Sun Makers (4)
Dec 17, 1977
The Doctor now moves to completely overthrow the Company. But the Collector has one last trump card to play.

E17Underworld (1)
Jan 7, 1978
Deep space, an unknown time. The Doctor encounters the Minyans, survivors of a race the Time Lords unwittingly obliterated early in their own history. The Minyans are searching for their race's lost gene banks, a quest which takes them to the edge of the galaxy…

E18Underworld (2)
Jan 14, 1978
After 100,000 years, the Minyans have found the long-lost P7E. But what awaits them on the ship, long buried in the core of a newborn planet?

E19Underworld (3)
Jan 21, 1978
The Minyans have, at long last, found the P7E. But a host of guards and robotic seers stand between them and the race banks.

E20Underworld (4)
Jan 28, 1978
The Minyons struggle to gain the precious race banks from the Oracle. But perhaps it is giving in a little too easily ...

E21The Invasion of Time (1)
Feb 4, 1978
Gallifrey, world of the Time Lords. The Doctor returns and claims the vacant presidency. But his behaviour is erratic and his motives mysterious.

E22The Invasion of Time (2)
Feb 11, 1978
The Doctor is made president of the Time Lords. He immediately orders K-9 to lower the planet's defences and has Leela banished to the wilderness.

E23The Invasion of Time (3)
Feb 18, 1978
The Doctor has betrayed his own people and enabled a Vardan invasion of Gallifrey. Leela joins forces with the Outsiders and prepares to strike back against the aliens.

E24The Invasion of Time (4)
Feb 25, 1978
The Doctor works to free his planet of the Vardan menace. How can he defeat an enemy who can read his very thoughts? And does their invasion conceal a greater menace?

E25The Invasion of Time (5)
Mar 4, 1978
The Sontarans have invaded Gallifrey, seeking to seize the incredible power of the Time Lords. The Doctor's first step is to cut them off from their fleet. But Kelner is helping the enemy…

E26The Invasion of Time (6)
Mar 11, 1978
The Sontarans finally invade the TARDIS itself, seeking the Great Key. The Doctor, however, has other uses for this powerful object…
This season saw the introduction of the Black and White Guardians as well as the companion Romana, who became only the second female Time Lord companion since Susan. This season is sometimes colloquially known as The Key to Time season after the story arc involving the Key to Time. Although not the first season to consist of linked stories (Season 8 in 1971 was the first, as all the stories that year featured the Master), it was the first to be recognised as having a series long arc. Although multi serial arcs would occur again, such a full- season experiment wouldn't be attempted again until Season 23. The arc has a number of similarities to the Season 1 story The Keys of Marinus. The storyline was originally proposed for Season 15, but it required more planning.

E1The Ribos Operation (1)
Sep 2, 1978
The Magellanic Clouds, the planet Ribos, an unknown time. Ordered by the White Guardian to collect the pieces of the omnipotent Key to Time, The Doctor, K-9 and his new assistant Romana arrive. Collecting the first segment is not going to be easy…

E2The Ribos Operation (2)
Sep 9, 1978
Trying to obtain the first segment of the Key to Time, the Doctor and Romana are swept up in an elaborate con. The target – the homicidal Graff Vynda K.

E3The Ribos Operation (3)
Sep 16, 1978
Prisoners of the maniacal Graff Vynda K, the Doctor and Romana must break out and pursue the first segment – even as Unstoff takes it into the most dangerous place on Ribos.

E4The Ribos Operation (4)
Sep 23, 1978
Trapped in the catacombs between a mad warlord and ravenous monsters, the Doctor and Romana work desperately to obtain the segment of the Key to Time - and escape alive.

E5The Pirate Planet (1)
Sep 30, 1978
Planet Zanak, unknown time. The Doctor and Romana are seeking the planet Calufrax where the second segment waits. They are in the right place and the right time… but on the wrong planet.

E6The Pirate Planet (2)
Oct 7, 1978
The Doctor begins to investigate the mysteriously wealthy planet Zanak. Mentiads, a deranged Captain, strange omens, miraculous mines – what does it all mean? And what does it have to do with the Key to Time?

E7The Pirate Planet (3)
Oct 14, 1978
The Mentiads take the Doctor, Romana and Kimus to a reunion with K9 and Mula, where they set about trying to defeat the Captain.

E8The Pirate Planet (4)
Oct 21, 1978
The Captain and Xanxia work toward their secret goals. Both depends on the pirate planet consuming one more victim - Earth.

E9The Stones of Blood (1)
Oct 28, 1978
England, the late 1970s. The Doctor and Romana arrive in search of the third segment. But the Tracer readings are erratic and something ominous is happening with an ancient stone circle...

E10The Stones of Blood (2)
Nov 4, 1978
The quest for the Third Segment has landed the Doctor and Romana in the midst of a druidic cult centred on a stone circle. But the stones are not what they seem, and somewhere out there is a blood-thirsty Celtic goddess.

E11The Stones of Blood (3)
Nov 11, 1978
Chased by blood-thirsty stones, the Doctor must find a way to rescue Romana. What awaits him in the theoretical absurdity of hyperspace?

E12The Stones of Blood (4)
Nov 18, 1978
Facing a sentence of death from merciless justice machines, the Doctor must play for time while Romana tries to discover just who Vivian Fey really is.

E13The Androids of Tara (1)
Nov 25, 1978
Arriving on Tara, Romana locates the fourth segment of the Key to Time with ease. But getting it away proves more difficult, as she is captured by the scheming Count Grendel who wants the throne of Tara for himself.

E14The Androids of Tara (2)
Dec 2, 1978
The Doctor must employ a desperate gambit to keep the evil Grendel off the throne. And the Count has a new pawn to play - Romana.

E15The Androids of Tara (3)
Dec 9, 1978
The battle for control of Tara turns into a duel of wits between the Doctor and Grendel. But the Count shows he has more treacherous tricks up his sleeve.

E16The Androids of Tara (4)
Dec 16, 1978
Grendel plans two weddings and a funeral to cement his hold over Tara. The Doctor and K-9 race to foil him and save the Time Lady's life.

E17The Power of Kroll (1)
Dec 23, 1978
The Third Moon of Delta Magna, The Future. The Doctor and Romana arrive in search of the fifth segment and are immediately swept up in a conflict between the crew of a new refinery and the embittered natives…

E18The Power of Kroll (2)
Dec 30, 1978
The Doctor and Romana try to avoid being sacrificed to Kroll – just in time for the real monster to appear.

E19The Power of Kroll (3)
Jan 6, 1979
The massive Kroll is awake and killing anyone in its path. And the swampies are determined to appease it – by sacrificing the Doctor and Romana.

E20The Power of Kroll (4)
Jan 13, 1979
The Doctor and Romana are trapped between the monstrous Kroll and the insane refinery commander. And there is no sign of the fifth segment of the Key to Time.

E21The Armageddon Factor (1)
Jan 20, 1979
Searching for the sixth segment, the Doctor and Romana land in the midst of a brutal nuclear war between the planets Atrios and Zeos.

E22The Armageddon Factor (2)
Jan 27, 1979
Swept up in an apocalyptic war, the Doctor must help the Marshal defend his planet. But who or what controls the Marshal?

E23The Armageddon Factor (3)
Feb 3, 1979
The Doctor meets a new enemy – the Shadow – who wants the Key to Time. And the Atrian-Zeon war is approaching an awful climax.

E24The Armageddon Factor (4)
Feb 10, 1979
The Doctor is forced into a desperate gambit to prevent a massacre. But it is getting harder to tell friend from foe.

E25The Armageddon Factor (5)
Feb 17, 1979
The Doctor and Romana finally venture into the Shadow's lair. The Shadow appears to hold all the cards but the Doctor has found an old friend.

E26The Armageddon Factor (6)
Feb 24, 1979
The Doctor and the Shadow have their final confrontation to take control of the Key to Time. Completing it may entail an awful sacrifice. And the Black Guardian will do anything to obtain it and plunge the Universe into chaos.
It consisted of five stories, plus the incomplete Shada, unfinished as a result of an industrial strike. Lalla Ward joined as Romana II, and the season is notable for the involvement of Douglas Adams in the writing department. This was the last season to use the traditional Delia Derbyshire "Doctor Who theme" arrangement.

E1Destiny of the Daleks (1)
Sep 1, 1979
Skaro, the Dalek homeworld, some time in the future. The TARDIS lands in the irradiated ruins of the old Kaled city and something is moving underneath the wasted surface of the planet…

E2Destiny of the Daleks (2)
Sep 8, 1979
Romana has been captured by the Daleks, the Doctor is the guest of the Movellans. The Daleks are drilling deep into Skaro for something and the Doctor has an awful suspicion about their objective…

E3Destiny of the Daleks (3)
Sep 15, 1979
The Daleks have awoken Davros in the heart of Skaro. Only the Doctor and the Movellans stand between them and their objective. But are the Movellans really on the Doctor's side?

E4Destiny of the Daleks (4)
Sep 22, 1979
Trapped between the Movellans and the Daleks, the Doctor must find a way to defeat both. Meanwhile, vast space fleets await new orders.

E5City of Death (1)
Sep 29, 1979
Paris, 1979. The Doctor and Romana are here on holiday, but something is disturbing the flow of time. Could the time travel experiments of Count Scarlioni be to blame?

E6City of Death (2)
Oct 6, 1979
Captured by the Count, the Doctor and Romana uncover an elaborate plan to steal the Mona Lisa. But there is more to Scarlioni's plans than a simple theft.

E7City of Death (3)
Oct 13, 1979
The Doctor and Romana unwrap an intricate plot involving aliens, time travel and the Mona Lisa. How is Count Scarlioni living in two times at once? And what does he want?

E8City of Death (4)
Oct 20, 1979
Scaroth is determined to go back 400 million years in time to prevent a mistake. But the Doctor must stop him – because the consequences would be disastrous.

E9The Creature from the Pit (1)
Oct 27, 1979
The planet Chloris. Drawn here by a mysterious distress signal, the Doctor becomes the prisoner of the ruthless Adrasta. A strange and deadly pit awaits those who displease her.

E10The Creature from the Pit (2)
Nov 3, 1979
The Doctor is in a pit with a deadly creature. And Adrasta has plans for Romana and K-9.

E11The Creature from the Pit (3)
Nov 10, 1979
The Doctor has come face to face with a massive green creature. Adrasta goes into the mines to kill the monster. But everything is not as it appears…

E12The Creature from the Pit (4)
Nov 17, 1979
The truth about the creature is revealed. But its imprisonment may have already set in motion a terrible revenge.

E13Nightmare of Eden (1)
Nov 24, 1979
The orbit of the holiday planet, Azure, the year 2116. The starships Empress and Hecate are fused together after an accident in hyperspace. Naturally the Doctor thinks he can find a solution, but has the accident unleashed a far more deadly menace?

E14Nightmare of Eden (2)
Dec 1, 1979
Two ships have collided above Azure but that may be the least of the Doctor's problems. Monsters and drug smugglers are loose on the ship. And it all seems to tie in with Tryst's electronic zoo…

E15Nightmare of Eden (3)
Dec 8, 1979
The Doctor and Romana begin to uncover the truth about the strange events aboard the luxury liner Empress. They first have to separate the two ships from each other, but they've got Mandrells, drug smugglers and police chasing after them.

E16Nightmare of Eden (4)
Dec 15, 1979
The Doctor finally discovers the truth about the drug smuggling ring. But the villains are still one step ahead.

E17The Horns of Nimon (1)
Dec 22, 1979
Deep space, an unknown time. The TARDIS encounters a disabled Skonnon battlecruiser transporting Anethan 'tribute'. The co-pilot is determined to reach Skonnos at any cost.

E18The Horns of Nimon (2)
Dec 29, 1979
Having reached Skonnos, Romana is sent with the Anethians to face the deadly Nimon.

E19The Horns of Nimon (3)
Jan 5, 1980
The Doctor and Romana are trapped in the Nimon's lair. Is he really the last of his race? What are his real intentions toward Skonnos?

E20The Horns of Nimon (4)
Jan 12, 1980
Romana is trapped on a ruined planet. The Nimons are launching their invasion of Skonnos. Can the Doctor stop the 'Great Journey of Life' ?
The season featured a story arc involving E-Space and the return of the Master who had stolen a new body rather than regenerate. The stories were darker and more adult in tone than those during the Graham Williams era. They also attempted to emphasise science, much to the satisfaction of both script editor Christopher H. Bidmead and executive producer Barry Letts. Notably, this season revolves around the theme of entropy, linking together all of its stories in a rare phenomenon for the show (while other story arcs would be linked together via people, objects, etc, the use of an overarching theme for a season was unprecedented). This theme would eventually foreshadow and culminate in the Doctor's regeneration at the end of the season.

E1The Leisure Hive (1)
Aug 30, 1980
The planet Argolis, around the year 2290. The Argolins live in a huge shielded city, protected from the irradiated wasteland outside. The planet's survival depends on the tourists their Leisure Hive attracts. But a series of horrific deaths seems to jeopardise that future - can the Doctor and Romana find a solution?

E2The Leisure Hive (2)
Sep 6, 1980
Another man is found dead, strangled by the Doctor's scarf, so the Doctor is put on trial. By some of the archaic rules of law, he's made to "prove" his innocence by becoming a test subject in a new tachyon experiment with time. The result will prove his innocence or guilt, so they say.

E3The Leisure Hive (3)
Sep 13, 1980
With the Doctor suffering from the time experiment, the clandestine schemes of others start coming to light, along with the secreted purposes to which the tachyonic generator has been used.

E4The Leisure Hive (4)
Sep 20, 1980
With the saboteur and murderer revealed and arrested, peace should now be restored, but a new threat emerges - a war-monger who's both ready and eager to aggress upon other worlds with a newly manufactured warrior army.

E5Meglos (1)
Sep 27, 1980
The desert planet Zolpha-Thura, the 1980s. Giant intelligent megalomaniac cactus Meglos is planning to conquer the galaxy but first it needs the dodecahedron, a powerful energy source currently on the planet Tigella. To get it back Meglos recruits a band of galactic mercenaries and hatches a cunning scheme requiring it to impersonate the Doctor...

E6Meglos (2)
Oct 4, 1980
With the TARDIS occupants trapped in a chronic histeratic loop (forever reliving the same moment in time), the devious Meglos - disguised as the Doctor - gains the trust of the Tigellans along with full and private access to their power chamber.

E7Meglos (3)
Oct 11, 1980
Can Romana escape the Gaztaks? What has become of the Dodecahedron? What pressing appointment awaits the Doctor?

E8Meglos (4)
Oct 18, 1980
With the Doctor about to be ritualistically sacrificed to appease the god Ti for stealing the dodecahedron, Meglos and the pirates return to Zolfa-Thura with the dodecahedron to fire up an ancient weapon and blast Tigella out of existence.

E9Full Circle (1)
Oct 25, 1980
Deep space, an unknown time - on course for Gallifrey, the TARDIS passes through a strange disruption. When they materialise, the scanner shows the Time Lord homeworld... but the travellers have passed into the negative pocket universe of E-Space and are in fact on the planet Alzarius, where evolution works very differently...

E10Full Circle (2)
Nov 1, 1980
As the humanoid community takes refuge in their crashed spaceship, venomous marsh spiders begin to hatch from the local fruit while bestial marshmen emerge from the waters to walk the land. It is quite apparent that the marshmen desire entry into the spaceship. Meanwhile, as a curious marshchild shadows the Doctor, a group of teen rebels decides to take over the TARDIS.

E11Full Circle (3)
Nov 8, 1980
Infection from a spider bite causes Romana's personality to change. Meanwhile the Doctor, after discovering that the spaceship society is in a perpetual state of repair and upgrade, has morality issues with the ship's leading scientist who readies himself to perform gruesome experiments on the live marshchild while it's fully conscious.

E12Full Circle (4)
Nov 15, 1980
Marshmen invade the Terradonian ship thanks to Romana, who seems to be in communion with them. While the ship's inhabitants flee for their lives, the Doctor discovers a crucial fact why these humanoids can never return to the planet Terradon.

E13State of Decay (1)
Nov 22, 1980
Still trapped in negative E-Space, the TARDIS lands on an unnamed world to find a society sliding back into feudalism. What is the secret of the Three Who Rule? And what ancient enemy of the Time Lords is stirring again on this world...?

E14State of Decay (2)
Nov 29, 1980
The Doctor and Romana are escorted to the tower to meet the royal leaders, hoping they can find answers to why this society evolves backwards. The Doctor recognizes the tower as an old Earth spaceship, and further finds that the old fuel tanks, far from empty, are full - but with blood. Meanwhile, Councilor Aukon senses intelligence in Adric and selects him to be the their first "Chosen One."

E15State of Decay (3)
Dec 6, 1980
The Doctor finds archive material in the TARDIS that tells him he's dealing with an ancient enemy of the Time Lords, a nearly indestructible king vampire who's ready to revive and reenter normal space, spreading death, once again, across the universe.

E16State of Decay (4)
Dec 13, 1980
The Doctor joins the villagers' revolt against their vampire rulers, unsure how to kill the king vampire. Meanwhile Adric is first in line to join the new vampire order while Romana is laid out as a sacrificial Time Lord for the awakening king vampire and his swarm of bats.

E17Warriors' Gate (1)
Jan 3, 1981
The TARDIS is drawn into an empty white void, somewhere between universes. But they are not the only ones trapped there.

E18Warriors' Gate (2)
Jan 10, 1981
When Rorvik learns that Romana is a time sensitive, he takes her prisoner, forcing her to find a way out of the void. The Doctor attempts to discover what lies beyond the mirror.

E19Warriors' Gate (3)
Jan 17, 1981
While Biroc leads the Doctor to a view of the Tharil's lordly past, Romana learns more about the damaged freighter and the cold-heartedness of its crew. Meanwhile Commander Rorvik, confounded by the time mirror inside the universal center gateway, ignores evidence that it's no simple mirror and decides to blast it, imperiling the lives of everyone.

E20Warriors' Gate (4)
Jan 24, 1981
The Doctor deduces that the freighter is a slave ship loaded up with Tharils to be sold as time machine components, but the immense weight of Rorvik's damaged ship, designed to contain the Tharils, is now collapsing the fragile void of the micro-universe in which they're all stuck, pulling everything inside ever closer.

E21The Keeper of Traken (1)
Jan 31, 1981
The planet Traken. The Traken union is a society living in perfect harmony, watched over by the powerful but benign Keeper. But now the Keeper is dying, and he senses a great evil within his protectorate. Can the Doctor help him discover the secret of the Melkur?

E22The Keeper of Traken (2)
Feb 7, 1981
Tremas claims consular privilege to protect the Doctor and Adric from execution, though it binds his fate to theirs if they're found guilty of murder. Melkur strengthens his hold over Kassia while Seron decides to have rapport with The Keeper to learn truth, and Adric finds evidence of another TARDIS in the area.

E23The Keeper of Traken (3)
Feb 14, 1981
With Tremas falling under suspicion, due to his association with the Doctor, a new Keeper Nominate is named. Now, with everything in place, Melkur has only a short wait before his full malevolence can unfold.

E24The Keeper of Traken (4)
Feb 21, 1981
With the merciless Melkur in control of The Source, the Doctor and his allies have only a slim chance of deposing him, which also puts the peace of the Traken Union in severe jeopardy.

E25Logopolis (1)
Feb 28, 1981
Deciding to repair the TARDIS' chameleon circuit, the Doctor goes to Earth to find a real police box. But an old enemy is one step ahead of him.

E26Logopolis (2)
Mar 7, 1981
The Doctor, aware that his time may soon be ending, travels to the Logopolis where a series of fateful events are set in motion.

E27Logopolis (3)
Mar 14, 1981
With Nyssa from Traken unexpectedly rejoining the group, Adric aids the Monitor of Logopolis in trying to save the Doctor before time runs out. The Master, at liberty to prepare, is finally ready to reveal his true target, which unknowingly sets off the biggest catastrophe of all time.

E28Logopolis (4)
Mar 21, 1981
With the universe collapsing, the Doctor forms an uneasy alliance with the Master to save it. In case all does not go well, the Watcher takes the Doctor's companions to a safe place, but his plans for them don't stop there. The one hope for all lies back on Earth.
Two milestones occurred in Earthshock. Firstly, the Cybermen returned, unannounced, for the first time since Revenge of the Cybermen in 1975 with a completely different design, with David Banks' first appearance as Cyber-Leader, a role he would return to in subsequent stories involving the Cybermen until Silver Nemesis. Secondly, for the first time since The Daleks' Master Plan which had aired in 1965 and 1966, a companion died. Other milestones included Black Orchid, the first non-science fictional historical serial since 1966's The Highlanders, and the destruction of the Doctor's sonic screwdriver in The Visitation. A cliffhanger ending to the series appeared to have left Tegan stranded at Heathrow Airport with the Doctor abandoning her by mistake (the Doctor had spent most of the series trying to get Tegan back to Heathrow, which almost became a running theme).

E1Castrovalva (1)
Jan 4, 1982
Southern England, 1981. The universe has been saved, but at the cost of the fourth Doctor's life. The newly-regenerated fifth Doctor must rely on his friends to survive as the regeneration threatens to fail…

E2Castrovalva (2)
Jan 5, 1982
The TARDIS is plunging toward destruction. But even if the Doctor can escape, is yet another trap waiting?

E3Castrovalva (3)
Jan 11, 1982
The Doctor has arrived in the supposed safety of Castrovalva. But something is odd about the seemingly tranquil city…

E4Castrovalva (4)
Jan 12, 1982
The TARDIS crew are caught in a space-time trap. Escaping will mean a final confrontation with the Master.

E5Four to Doomsday (1)
Jan 18, 1982
Deep space, four days from Earth, 1981. The TARDIS materialises aboard a massive Urbankan starship. What is the real agenda of Monarch, master of the vessel?

E6Four to Doomsday (2)
Jan 19, 1982
The Doctor and his companions explore Monarch's vessel. But what is the secret of the ancient Earthlings aboard?

E7Four to Doomsday (3)
Jan 25, 1982
Bigon reveals Monarch's terrible plan to the Doctor. Can he act in time to save Nyssa? And which side is Adric on?

E8Four to Doomsday (4)
Jan 26, 1982
The Doctor has little time left to stop the evil Monarch. But he is losing allies — and the TARDIS is gone.

E9Kinda (1)
Feb 1, 1982
The TARDIS lands on the jungle planet Deva Loka, where an Earth expedition has been sent to study the Kinda, a tribe of primitive people. Three team members have already vanished. Are the Kinda as primitive as they seem?

E10Kinda (2)
Feb 2, 1982
Sanders meets Panna and Karuna who leave a lasting impression on him, while the Dukkha does the same on Tegan. When Hindle's breakdown begins, the Doctor and Todd are in danger.

E11Kinda (3)
Feb 8, 1982
Aris now carries the mark of the Mara and has gained voice, so Panna shows the Doctor and Todd exactly what the past, present and future hold for Deva Loka.

E12Kinda (4)
Feb 9, 1982
As the Mara finally breaks free of its dream dimension, the Kinda must do everything they can to contain it. Hindle's need to destroy everything and everyone is unstoppable.

E13The Visitation (1)
Feb 15, 1982
As plague sweeps 17th century England, the Doctor discovers a more exotic threat at work - shipwrecked Terileptil convicts, intent on making the planet their own.

E14The Visitation (2)
Feb 16, 1982
To rescue Tegan and Adric, captured and interrogated by the Terileptil fugitive leader, the Doctor must get past the locals under alien control and overcome Death (an android servant dressed up as The Grim Reaper).

E15The Visitation (3)
Feb 22, 1982
The Doctor makes the fugitive Terileptils a rare offer they shouldn't refuse; but, though few in numbers, they have a plan in the works for the quick and complete domination of Earth and mean to see it through.

E16The Visitation (4)
Feb 23, 1982
With Tegan and Richard under alien control, and the manor sealed against anyone leaving or entering, it's a question whether or not the Doctor can get to London before the Terileptils release their improved strain of black death upon the world.

E17Black Orchid (1)
Mar 1, 1982
The TARDIS arrives on Earth in 1925 where, due to a case of mistaken identity, the Doctor ends up playing in a local cricket match, but events take on a more sinister tone at the country home of their host Lord Cranleigh.

E18Black Orchid (2)
Mar 2, 1982
Ann escapes her Harlequin-clad abductor but it's The Doctor whom she accuses. Strangled bodies mount and The Doctor is arrested along with "accessories" Tegan, Nyssa and Adric. Will Lady Cranleigh's secret come out?

E19Earthshock (1)
Mar 8, 1982
The TARDIS crew arrives on Earth in the 26th Century in a cave system where a military force is investigating the disappearance of a palaeontological expedition.

E20Earthshock (2)
Mar 9, 1982
With her crew vanishing mysteriously, Captain Briggs assumes the Doctor is the guilty party, but the traitor is closer to home… as are the Cybermen.

E21Earthshock (3)
Mar 15, 1982
The Cybermen are released from their silos and are on the march, attacking Briggs's crew and ensuring that the freighter remains on course for Earth. But why?

E22Earthshock (4)
Mar 16, 1982
The Doctor realises the freighter is now a huge bomb and sends it back through time where it can explode millions of years ago... but Adric is still aboard...

E23Time-Flight (1)
Mar 22, 1982
A Concorde loaded with passengers and crew vanishes into thin air. The still-grieving TARDIS crew arrive at Heathrow Airport in 1981 as the Doctor volunteers his services to solve the mystery.

E24Time-Flight (2)
Mar 23, 1982
The Doctor's TARDIS is stolen, and tracking it down reveals the existence of an alien named Kalid controlling events in the past. While the Doctor challenges Kalid's motives for being there, Tegan and Nyssa discover the source of Kalid's power - an even greater threat for the Doctor.

E25Time-Flight (3)
Mar 29, 1982
From within their sarcophagus, the gestalt Xeraphin are communicating through Nyssa. But their psychic energy is so powerful it may destroy her body completely.

E26Time-Flight (4)
Mar 30, 1982
The Master's TARDIS is repaired and the Doctor must follow him back to 20th century Heathrow, once he has rescued all the passengers and crew from both Concordes.
Structurally, the season retread season 18's formula of including a trilogy of stories bound together by an overarching theme. In this instance, the tripartite tale involved Turlough's attempts to kill the Doctor at the behest of the Black Guardian.

E1Arc of Infinity (1)
Jan 3, 1983
On Gallifrey, someone on the high council is perpetrating a treasonous act - transmitting the Doctor's bio-extract from the space/time matrix to an anti-matter being. On Earth, two English lads spend their last night in Amsterdam sleeping in a crypt where they're attacked by an alien creature under the same anti-matter being's control.

E2Arc of Infinity (2)
Jan 5, 1983
With an anti-matter being trying to enter the universe through the Doctor, risking the destruction of everything, there is only one clear course of action for the High Council of Time Lords to take: execute the Doctor. Meanwhile, Tegan arrives in Amsterdam and hears about what's become of her cousin from his unscathed friend.

E3Arc of Infinity (3)
Jan 11, 1983
Something seemed amiss about the Doctor's execution, so the Castellan has Commander Maxil discreetly but fully look it. Meanwhile, as the Doctor meets the anti-matter being inside the Time Lord Matrix, Tegan and her cousin's friend run afoul of a bird-like alien back on Earth.

E4Arc of Infinity (4)
Jan 12, 1983
The High Council creates a distraction so the Doctor and Nyssa can find Omega on Earth and prevent his reentry into our universe.

E5Snakedance (1)
Jan 18, 1983
Tegan steers the TARDIS to the planet Manussa, without meaning to - but why? And is it a coincidence that the planet is about to celebrate the 500th anniversary of the expulsion of the insidious Mara?

E6Snakedance (2)
Jan 19, 1983
The Doctor talks to Ambril and Chela to try and stop the 500th anniversary celebrations. A possessed Tegan finds herself in Dugdale's Hall of Mirrors to where she summons Lon. The Doctor and Nyssa return to the caves.

E7Snakedance (3)
Jan 25, 1983
The possessed Tegan and Lon try to find the whereabouts of the Great Crystal. The Doctor finds himself in prison, with only Nyssa to try and get him out. Chela tells the Doctor tales of Dojjen.

E8Snakedance (4)
Jan 26, 1983
The Doctor and the original snakedancer Dojjen work to rid the planet of the Mara.

E9Mawdryn Undead (1)
Feb 1, 1983
The Doctor discovers a starship trapped in a time warp over Earth. Meanwhile, public schoolboy - and secret alien émigré, Turlough, learns he can have that which he most desires, in return for the murder of the Doctor...

E10Mawdryn Undead (2)
Feb 2, 1983
The TARDIS lands on Earth six years out of date, stranding the Doctor in 1983 while leaving Tegan and Nyssa to look for him in 1977. Both parties also encounter former companion, Brigadier Lethbridge-Stewart, though curiously, he has no memory of the Doctor at all.

E11Mawdryn Undead (3)
Feb 8, 1983
Mawdryn and his eternal mutants reveal the truth: they are exiles, they are in pain and need the Doctor's future 'lives', as afforded by each of his remaining regenerations.

E12Mawdryn Undead (4)
Feb 9, 1983
As the Doctor's ethics are challenged and the two Brigadiers finally meet, Turlough plots with the Black Guardian to bring the Time Lord down once and for all...

E13Terminus (1)
Feb 15, 1983
Deep space, some time in the future. Still following the Black Guardian's orders, Turlough sabotages the TARDIS, forcing an emergency fusion with an apparently deserted starship. But the ship is headed for the notorious plague colony, Terminus. Surrounded by plague victims and space pirates, is the Doctor too preoccupied to notice the greatest threat of all - a threat connected to the position of Terminus at the exact centre of the universe?

E14Terminus (2)
Feb 16, 1983
The Doctor's party remains divided and scattered as the immense transport docks at the Terminus space station, which turns out to be a leper colony at the exact centre of the known universe. As they find their way around and investigate, Nyssa shows signs of contracting the disease.

E15Terminus (3)
Feb 22, 1983
Since the Doctor's party represents neither lazars nor handlers, they're presumed to be investigators, which is enough to spark the disgruntled Valgard into challenging Eirak over leadership of the handlers. Meanwhile, as the giant, dog-like Garm takes a terrified Nyssa off for "treatment," Bor returns from the forbidden zone with interesting news about the ship.

E16Terminus (4)
Feb 23, 1983
In attempting to reopen a doorway into the TARDIS, Turlough activates Terminus' automated fuel-jettisoning sequence. The first time this sequence was engaged, it flung its first of two massive loads of unstable fuel into the distant past, producing the Big Bang that created the universe. This second sequence - if the Doctor can't find a way to shut it down - will release a second massive load, the explosion of which will entirely negate the effects of the first.

E17Enlightenment (1)
Mar 1, 1983
After receiving a warning from the White Guardian, the Doctor initially believes the TARDIS has landed aboard an Edwardian clipper ship - but all is not as it seems. While the time travellers are caught up in the omnipotent Eternals' race for the ultimate prize, the Black Guardian's scheme to destroy the Doctor enters the end-game - but which side is Turlough a pawn of?

E18Enlightenment (2)
Mar 2, 1983
Captain Striker and his officers reveal themselves to be Eternals, mind-reading creatures who live outside of time and who require Ephemerals (humans and other "time dwellers") to relieve them of their emptiness. They race against other Eternals for the grand prize of Enlightenment, by which to grant their deepest wishes. That can't be good for the universe, but how can the Doctor strategise against beings adept at reading his every thought?

E19Enlightenment (3)
Mar 8, 1983
Turlough's panic puts him aboard a pirate ship where Captain Wrack uses his presence to invite all the other captains over for dinner. She's been picking off a few of her greatest rivals in the race and now sees an opportunity to clear the field once and for all and become the clear winner.

E20Enlightenment (4)
Mar 9, 1983
Tegan isn't aware she been outfitted with a device to destroy Captain Striker's ship. While the detonation will merely slip the indestructible Eternals back into the realm of eternity, nothing nearly so elegant or as tidy awaits the Ephemerals aboard the ship.

E21The King's Demons (1)
Mar 15, 1983
In 1215 at the castle of Ranulf Fitzwilliam, son Hugh is jousting on a matter of honor against Sir Gillis Estram, the champion of King John, when the TARDIS appears. The Doctor, Turlough and Tegan are immediately hailed as demons and welcomed warmly by the King. Something is wrong with this picture, observes the Doctor.

E22The King's Demons (2)
Mar 16, 1983
England, 1215. With the historic signing of the Magna Carta supposedly only days away, the Doctor is startled to find King John apparently intent on provoking civil war - and seemingly in two places at once...
The Twin Dilemma, the first story with Colin Baker as the Sixth Doctor, aired last in the season. This season saw the departure of companions Tegan, Turlough and Kamelion and introduced Peri. Most episodes were the traditional twenty-five minute length. However, due to coverage of the 1984 Winter Olympics, Resurrection of the Daleks was re-edited before airing and shown as two forty-five minute episodes.

E1Warriors of the Deep (1)
Jan 5, 1984
Earth's ocean floor, 2084. With two superpowers poised on the brink of a devastating photonic war, a missile base comes under attack from the reptilian Sea Devils and Silurians, intent on eradicating the upstart human race and reclaiming the planet…

E2Warriors of the Deep (2)
Jan 6, 1984
Just as the Doctor gains a tentative trust from the humans, a Silurian battle cruiser approaches. The Doctor warns Commander Vorsha to hold his fire and find out what they want, but is the level-headed commander one who'll listen?

E3Warriors of the Deep (3)
Jan 12, 1984
As Vorshak's crew are cut down by Sauvix's Sea Devil Warriors, the Doctor is running out of ways to broker a peace between the opposing species.

E4Warriors of the Deep (4)
Jan 13, 1984
With Silurians in control of the base, Icthar reveals his plan for a final solution to Earth's human problem, which presents the Doctor a great moral dilemma.

E5The Awakening (1)
Jan 19, 1984
The sleepy English village of Little Hodcombe, 1984. The village re-enactment of the English Civil War is in full swing, but a malign alien presence intends the mock-battles to be rather more realistic than planned...

E6The Awakening (2)
Jan 20, 1984
The Malus, an alien that's purely evil, needs the civil war re-enactments to become authentic so it can feed off the psychic energy of dying and embattled men and fully revive. Not if the Doctor can derail things, of course.

E7Frontios (1)
Jan 26, 1984
The planet Frontios, in the distant future. Following Earth's destruction, a tiny colony struggles to eke out a life on this desolate world. But where do the bombardments that threaten them originate from? Little does the Doctor suspect that somewhere nearby lurks a power capable of ripping even the TARDIS apart…

E8Frontios (2)
Jan 27, 1984
Following the destruction of the TARDIS, the only part of it left is the hat stand. So Turlough uses it as a weapon! Plantagenet gets swallowed by the earth, and Norna and Turlough discover the Tractators.

E9Frontios (3)
Feb 2, 1984
Trying to rescue the Doctor from the Tractator's trap, Tegan lands them both in even more trouble. Turlough goes a bit mad, and reckons he knows the evil of the Tractators from old.

E10Frontios (4)
Feb 3, 1984
The Doctor tries to deal with the Tractator's cunning plan, despite Turlough's best intervention. They discover the splintered TARDIS in the tunnels beneath the planet's surface, but how will they put it together again?

E11Resurrection of the Daleks (1)
Feb 8, 1984
London's Docklands, 1984. Why are uniformed policemen gunning down strangely-dressed vagrants in broad daylight? A prison ship in the far future - who is the sole prisoner aboard the craft? And why are these two locations linked by the time corridor the TARDIS has been sucked into?

E12Resurrection of the Daleks (2)
Feb 15, 1984
As the surviving station crew work to destroy the space station, Davros consolidates his power and the Daleks launch a fiendish scheme to use the Doctor against the Time Lords.

E13Planet of Fire (1)
Feb 23, 1984
Lanzarote, 1985. Archaeologist Howard Foster raises a strange metal artefact from the sea floor. But how is it linked to the signal the TARDIS received? Why is Turlough suddenly so worried? And why is Kamelion acting so erratically?

E14Planet of Fire (2)
Feb 24, 1984
While the Master, victim of his own attempt to improve his TCE weapon, seeks restoration through Sarn's numismaton gas, the truth of Turlough's past comes out at last, though to guarantee the safety of his brother and the Sarn people, Turlough must consider a great personal sacrifice.

E15Planet of Fire (3)
Mar 1, 1984
Sarn prophesy foretells of an outsider who will come to aid the people. It's a role the Master is more than delighted to fill, which finally presents Timanov, the Sarn religious leader, the unbridled support he's sought in his campaign to cull the faithless from among his people. Turlough's secret past, however, is somehow intricately involved in all this, and the reluctance of its disclosure is enough to threaten all friendly ties with the Doctor.

E16Planet of Fire (4)
Mar 2, 1984
While the Master, victim of his own attempt to improve his TCE weapon, seeks restoration through Sarn's numismaton gas, the truth of Turlough's past comes out at last, though to guarantee the safety of his brother and the Sarn people, Turlough must consider a great personal sacrifice.

E17The Caves of Androzani (1)
Mar 8, 1984
The planet Androzani Minor, the distant future. In the planet's caves war rages between government troops and the android warriors of the mysterious Sharaz Jek. But what makes spectrox, the substance they battle to control, so valuable? And how far will the Doctor go to protect his companion?

E18The Caves of Androzani (2)
Mar 9, 1984
The Doctor and Peri have been rescued from the firing squad by the mysterious Sharaz Jek. But he has his own plans for them. And why are they suddenly feeling ill?

E19The Caves of Androzani (3)
Mar 15, 1984
The situation on Androzani Minor is building toward a violent confrontation, and the Doctor and Peri are slowly succumbing to spectrox toxemia.

E20The Caves of Androzani (4)
Mar 16, 1984
Events on Androzani reach a bloody climax. Will the Doctor and Peri survive the carnage? And at what cost?

E21The Twin Dilemma (1)
Mar 22, 1984
Earth, the future. The genius Sylvest twins, child prodigies, are kidnapped by the mysterious Professor Edgeworth and taken to the planet Jaconda. But who is Edgeworth? Why does he serve the giant slug Mestor? And what is Mestor's plan?

E22The Twin Dilemma (2)
Mar 23, 1984
The Doctor takes Peri to Titan 3, a desolate hunk of rock in space where he hopes to find some solitude for a while. Instead he finds the lone but unconscious survivor of a recent spaceship crash in sight of a mound-shaped complex where no formalised structure should exist.

E23The Twin Dilemma (3)
Mar 29, 1984
The Doctor arrives on Jaconda, once lush and green, to find it completely devastated by giant gastropods. Old legends about the planet's half-human/half-slugs weren't just myths after all. With or without help from the Doctor and his unpredictable mood swings, Lt. Lang is up for rescuing the twins, who are finally informed of the grand purpose they've been brought to Jaconda to accomplish.

E24The Twin Dilemma (4)
Mar 30, 1984
The Doctor and Edgeworth deduce that the real plan of Mestor, the gastropod ruler of Jaconda, will not only destroy Jaconda but lead to the devastation of other planets. Together they hope to thwart him despite his formidable ability at slipping into people's minds and controlling them.
With this season the BBC experimented with the format of the series, reducing the number of episodes to thirteen, but making each episode forty-five minutes long. The experiment did not result in improved ratings and at the end of the season the BBC announced it was cancelling the series; uproar from fans resulted in the BBC changing its mind and putting the series on an eighteen-month hiatus instead. This season is notable for featuring the final appearance of Patrick Troughton as the beloved Second Doctor, in a storyline that gave rise to a popular fan theory known as Season 6B.

E1Attack of the Cybermen (1)
Jan 5, 1985
London, 1985. The alien mercenary Lytton has been stranded here for nearly a year, but now he has a plan to escape. But how does it involve the Doctor's old enemies - and why are they on Earth at this point in history?

E2Attack of the Cybermen (2)
Jan 12, 1985
On Telos, the Doctor is reintroduced to the Cyber Leader and meets the Cryons, the planet's original inhabitants who will go to any lengths to get their world back!

E3Vengeance on Varos (1)
Jan 19, 1985
The former prison planet Varos, the future. The downtrodden population of miners are kept happy by real-life violence and murder broadcast live from the Punishment Dome. But then the TARDIS materialises inside the Dome...

E4Vengeance on Varos (2)
Jan 26, 1985
The Governor forces the Doctor to tell him the true value of Zeiton-7 but Sil attempts to derail his plans by subjecting Peri and Areta to an enforced mutation.

E5The Mark of the Rani (1)
Feb 2, 1985
England, the 1820s. As the Industrial Revolution gathers pace, the village of Killingworth is disturbed by crazed Luddite miners intent on smashing all machinery and engineers. But is there another cause of the situation?

E6The Mark of the Rani (2)
Feb 9, 1985
The Master uses The Rani's mind-controlling parasites to keep a meeting of Earth's leading scientists from being cancelled, and helps her plant transformation land mines for The Doctor, as he continues to propose an alliance with her in ruling over Earth.

E7The Two Doctors (1)
Feb 16, 1985
The alien space station J7, the mid-1980s Earth time. The Time Lords have sent the second Doctor and Jamie here to try to stop dangerous experiments into time travel. But the station comes under attack from the Sontarans and far away in space and time the sixth Doctor goes into psychic shock...

E8The Two Doctors (2)
Feb 23, 1985
The Doctor and Peri meet Jamie and learn the Second Doctor is with the Sontarans on Earth.

E9The Two Doctors (3)
Mar 2, 1985
The Sontarans prepare the Second Doctor to trigger their Kartz-Reimer capsule.

E10Timelash (1)
Mar 9, 1985
The planet Karfel, in the distant future. The tyrannical Borad rules with an iron fist, and any who oppose him are cast into the Timelash - a space-time tunnel leading to the past of an alien world called Earth...

E11Timelash (2)
Mar 16, 1985
The Borad accepts no opposition and enables Maylin Tekker to expose the rebels and trap Peri with the Morlox. The Doctor tries to avert a war between Karfel and the Bandrils.

E12Revelation of the Daleks (1)
Mar 23, 1985
The planet Necros, the future. The Doctor arrives for the cryogenic interment of an old friend at Tranquil Repose, a vast repository of bodies in suspended animation. But what does the 'Great Healer' really have in mind for them...?

E13Revelation of the Daleks (2)
Mar 30, 1985
Davros plans to create an army of Daleks loyal only to him but on Skaro, the Daleks have other plans and head to Necros. Caught in the middle of this, the Doctor must save Peri...
This season had a unique format, never again repeated in the show. Doctor Who had returned to production after a near-cancellation and an eighteen-month production hiatus. For the first time, a season consisted of a single story, The Trial of a Time Lord, although this was made up of four serials from a production perspective: each serial was written by a different person (save for The Mysterious Planet and the first part of The Ultimate Foe, both of which were written by Robert Holmes) and featured a different story presented as evidence, excluding the final two episodes which concluded the ongoing story of the trial; the trial storyline itself acted as a framing device to bracket the first three serials. As a result, whether The Trial of a Time Lord should be considered one story or four has been intensely debated. This single-story format, sometimes referred to as a "miniseries", would later be utilised for the third and fourth series of Torchwood.

E1The Trial of a Time Lord: Part 1
Sep 6, 1986
The Doctor is taken 'out of time' by the Time Lords and made to face an inquiry into his meddling in the affairs of others, overseen by the Inquisitor. The prosecutor, the Valeyard, soon has the proceedings upgraded to a trial for the Doctor's life. Evidence takes the form of recordings of the Doctor's recent adventures, beginning with his visit to the mysterious world of Ravalox and an encounter with Andromedan space pirates...

E2The Trial of a Time Lord: Part 2
Sep 13, 1986
The Doctor has an appointment with the Immortal, while Peri finds herself caught up with Glitz and the Tribe of the Free. Meanwhile, Merdeen begins to question all he believes.

E3The Trial of a Time Lord: Part 3
Sep 20, 1986
The Doctor escapes to rejoin Peri on the surface but shortly after becomes the prisoner of a surface-dwelling tribe called The Free. Ravalox isn't Ravalox after all, but before the Doctor can learn much more an irresistible agent from UK Habitat comes to fetch him back.

E4The Trial of a Time Lord: Part 4
Sep 27, 1986
All those on Ravolox are in exponentially greater peril than anyone can comprehend. If anything in the entire universe is to survive, it may come down to the Doctor arguing against machine logic over the value of life.

E5The Trial of a Time Lord: Part 5
Oct 4, 1986
The Doctor's trial continues. The Valeyard's next piece of evidence for the prosecution concerns the Doctor's recent trip to Thoros Beta. Though originally investigating arms dealing, the Doctor and Peri become embroiled in their old enemy Sil's alarming neurological experiments...

E6The Trial of a Time Lord: Part 6
Oct 11, 1986
The scientist Crozier keeps making empty promises and Yrcanos and Peri are seemingly betrayed by the addled Doctor who is sure the Matrix is being manipulated...

E7The Trial of a Time Lord: Part 7
Oct 18, 1986
While the Doctor helps Dr. Crozier transfer Lord Kiv's brain into a new host skull, Peri accompanies King Yrcanos as he searches for the Alpha Resistance fighters whom he feels, most certainly, will follow him into glorious battle against the Mentors and the Doctor.

E8The Trial of a Time Lord: Part 8
Oct 25, 1986
As the Possidor Ambassador visits, Sil is appalled to realise Crozier has selected Peri to be the Kiv's new host body - a move Yrcanos takes exception to with devastating results.

E9The Trial of a Time Lord: Part 9
Nov 1, 1986
With the prosecution case concluded, at last the Doctor is able to present his evidence. It takes place in the future with a new companion and new problems.

E10The Trial of a Time Lord: Part 10
Nov 8, 1986
As the Hyperion III continues its journey, more mysterious deaths occur.

E11The Trial of a Time Lord: Part 11
Nov 15, 1986
A course change that takes the Hyperion III closer to a black hole could prove unwise when there are so many aboard ship with hidden agendas. Disappearances continue, a murderer remains at large, and one person finally crumbles under the strain of harbouring a guilty secret.

E12The Trial of a Time Lord: Part 12
Nov 22, 1986
With factions vying for control of the ship, the Vervoids are found to be responsible for the many disappearances. Only the Doctor sees the fundamental but missed point as to why they can't be reasoned with or why they can't be allowed to arrive on Earth.

E13The Trial of a Time Lord: Part 13
Nov 29, 1986
The Valeyard's true identity is revealed and the trial aborted, but the Doctor and Mel must pursue his new enemy into the Matrix itself, where nothing is quite what it seems…

E14The Trial of a Time Lord: Part 14
Dec 6, 1986
The final part of this epic adventure. The Doctor and the Valeyard have entered the world of the Matrix. Can the Doctor defeat the evil incarnation of himself?
Unlike season 23, there was no overall story arc, and the episode allotment - two four-episode stories, two three-episode stories - would be retained for the remainder of the original series. Notably, the season featured the introduction of new companion Ace, who would be a prominent figure in the spinoff fiction that kept the Doctor Who name alive following its cancellation in 1989 and was the final official onscreen companion until Rose Tyler in the revived series.

E1Time and the Rani (1)
Sep 7, 1987
The alien world of Lakertya. With the aid of the savage Tetraps, the Rani has conquered this planet to allow her to continue her depraved biochemical experiments. But she finds herself needing the Doctor's assistance...

E2Time and the Rani (2)
Sep 14, 1987
The Rani's impersonation of Mel backfires badly because Urak can't tell the difference, while the Doctor attempts to learn the secret of the Loyhargil.

E3Time and the Rani (3)
Sep 21, 1987
The solstice nears, making it time for the Rani to bring her plans into fruition. The Doctor's sympathies for Beyus, ruler of the Lykertyans, are rather qualified. Beyus' heart is for his people yet something prompts him to collaborate fully in helping the Rani reach all her objectives. The answer, he's told, lies within the Center of Leisure.

E4Time and the Rani (4)
Sep 28, 1987
The Rani, at last, links the Doctor into her great brain machine, the crowning jewel in her component packet of geniuses brought together to turn Lakertya itself into one vast cerebral mass capable of redirecting time anywhere in the universe, giving her absolute power over all creation.

E5Paradise Towers (1)
Oct 5, 1987
The legendary Paradise Towers is supposed to be the height of luxury but when the Doctor and Mel arrive, they find it is as far from paradise as possible...

E6Paradise Towers (2)
Oct 12, 1987
With the Doctor condemned to death by the caretakers and their bizarre rulebook, Mel faces cannibalistic OAPS. Is Pex going to be the true hero of Paradise Towers?

E7Paradise Towers (3)
Oct 19, 1987
Mel and Pex play cat and mouse with the lethal cleaner robots while the Doctor and the surviving Kangs learn all about Kroagnon the Great Architect.

E8Paradise Towers (4)
Oct 26, 1987
Meeting up at the pool, the Doctor leads the surviving Rezzies, Kangs and Caretakers as they draw the line together on the 245th floor against the systematic cleansing of all life by Kroagnon and his robotic Cleaners.

E9Delta and the Bannermen (1)
Nov 2, 1987
Wales, 1959. A top-secret US satellite has mysteriously gone missing. This could have something to do with the arrival of a party of alien tourists en route to Disneyland, amongst their number Mel and the Doctor, and the Queen of the Chimerons - who's fleeing the Bannermen and their genocidal leader Gavrok...

E10Delta and the Bannermen (2)
Nov 9, 1987
Mel's just discovered something very interesting about the life cycle of her new friend and the Doctor has been cornered by an alien bounty hunter wearing blue suede shoes.

E11Delta and the Bannermen (3)
Nov 16, 1987
As Billy and Ray do what they can to help save Delta and the baby, the Doctor and Goronwy the beekeeper face Gavrok and his Bannermen one last time...

E12Dragonfire (1)
Nov 23, 1987
The deep-space trading post of Iceworld, the far future. The Doctor, Mel, their old friend Glitz and time-lost waitress Ace go in search of a fabulous treasure, supposedly guarded by a fire-breathing dragon. But what is the link between the treasure and Iceworld's proprietor, the frosty Mr Kane?

E13Dragonfire (2)
Nov 30, 1987
While Mel and Ace run from Glitz's former crewmen (whom he sold to Kane), officers Belazs and Kracauer conspire to overthrow Kane. The Doctor, meanwhile, discovers there really is a dragon in the ice caverns, which turns out to be a bio-mechanoid with a very interesting function.

E14Dragonfire (3)
Dec 7, 1987
At last learning the location of the missing key to his spaceship, Kane has the dragon hunted down and Iceworld brutally purged of all visitors; but, the Doctor, visiting the Ice Garden, learns something significant that will put the chagrin on Kane's grand plans for home world vengeance.
As the silver anniversary season, it included several stories noting the milestone: Remembrance of the Daleks, which featured the final "classic series" appearance of the Daleks and Davros and which would feature scenes set at Coal Hill School and 76 Totter’s Lane, both significant locations in the first episode, An Unearthly Child; and Silver Nemesis, the final classic series appearance of the Cybermen, which had its first episode broadcast on the actual 25th anniversary of the series. It also showed the lighter side of the Seventh Doctor's personality fade and be replaced by darker qualities. The Greatest Show in the Galaxy was also the last episode to have the Doctor dressed in bright colours. This would also be the first season that would be recorded with the intention of, and be broadcast in, a stereo mix.

E1Remembrance of the Daleks (1)
Oct 5, 1988
London, 1963. Returning to the scenes of his first televised adventure, the Doctor and new companion Ace play a tricky game of bluff and deceit involving two rival Dalek factions, local soldiers, and the awesomely powerful Gallifreyan artefact, the Hand of Omega...

E2Remembrance of the Daleks (2)
Oct 12, 1988
With two factions of Daleks involved in a race war on Earth, the Doctor takes care of old business by having the Hand of Omega ceremoniously but quietly buried in a churchyard. His actions do not go unobserved, and leaving behind a bored Ace without a purposeful outlet could spell trouble as well.

E3Remembrance of the Daleks (3)
Oct 19, 1988
The Doctor plans to let one of the Dalek factions have the Hand of Omega (but not too easily, of course) while keeping Gilmore and his military men preoccupied in a safe territory, but that plan could be threatened by a mole in their midst and a miscalculation on the Doctor's part.

E4Remembrance of the Daleks (4)
Oct 26, 1988
The Omega device is in jeopardy. A giant Dalek warship hangs above the Earth. London has become a battleground for ruthless alien intelligences.

E5The Happiness Patrol (1)
Nov 2, 1988
The Earth colony Terra Alpha, the future. With the aid of her sweet-natured executioner, Helen A, ruler of the planet, has ensured the population is happy - on pain of death! The Doctor and Ace decide to fight for the right to be miserable.

E6The Happiness Patrol (2)
Nov 9, 1988
The Doctor and Earl manage to escape from the Kandy Man and join up with the planet's natives, the Pipe People, enlisting their help to rescue Ace.

E7The Happiness Patrol (3)
Nov 16, 1988
As the Doctor leads the Pipe People towards reclaiming their world, Helen A faces betrayal from those closest to her.

E8Silver Nemesis (1)
Nov 23, 1988
The Doctor and Ace battle the time traveller Lady Peinforte and the Cybermen for possession of the incredibly powerful Nemesis statue, which is on its way back to the planet Earth to rendezvous with a destiny set in stone by the Doctor himself.

E9Silver Nemesis (2)
Nov 30, 1988
As hostilities break out between factions vying for ownership of the comet, the Doctor goes after the worst of the lot - Cybermen, using Ace's upgraded boom box to flood Cyber Communications with jazz music while trying to locate the whereabouts of the fleet beyond this mere scouting party.

E10Silver Nemesis (3)
Dec 7, 1988
With the Cyber Fleet poised nearby, the Doctor may have no choice but to let them have Nemesis. Meanwhile, Lady Peinforte and Richard navigate modern society, De Flores encounters an open betrayal, and Ace combats Cybermen with a slingshot.

E11The Greatest Show in the Galaxy (1)
Dec 14, 1988
The Doctor and Ace visit the Psychic Circus on the planet Segonax, where they find the standard of judging at the talent contest distressingly astringent.

E12The Greatest Show in the Galaxy (2)
Dec 21, 1988
The Doctor and Ace reach the Psychic Circus, where the Doctor is imprisoned with the other contestants while Ace draws the attention of the Chief Clown.

E13The Greatest Show in the Galaxy (3)
Dec 28, 1988
Mags helps the Doctor escape and Deadbeat leads him to Ace, where Bellboy tells them what happened to the Psychic Circus.

E14The Greatest Show in the Galaxy (4)
Jan 4, 1989
Mags goes to find Ace and Kingpin, pursued by the Chief Clown, while the Doctor confronts the power behind the Psychic Circus.
It was the final season of the "classic" series. Unusually for a Doctor Who season, aside from some scenes in Survival, all the stories took place on Earth. Apart from Battlefield, the stories followed a loose character arc, as Ace came to terms with her past. As for the Doctor, he had become darker in personality, treating others as pawns in the battle between good and evil while dressing in dark clothes to match his personality change. This was the first and so far only season to be produced entirely out of broadcast order.

E1Battlefield (1)
Sep 6, 1989
As UNIT are transporting a nuclear warhead around Carbury, knights in armour arrive to continue waging a war that began thousands of years ago, but in a wholly different dimension.

E2Battlefield (2)
Sep 13, 1989
The Doctor and Ace discover a stone spaceship underneath Warmsley's archaeological dig while Mordred summons Morgaine to Earth's dimension.

E3Battlefield (3)
Sep 20, 1989
The Brigadier rescues the Doctor from the stone spaceship before they set out to locate Morgaine before she gains Excalibur.

E4Battlefield (4)
Sep 27, 1989
Morgaine forces Ace and Shou Yuing to hand over Excalibur by threatening to release the Destroyer, so the Doctor and the Brigadier enter a dimensional portal to stop her.

E5Ghost Light (1)
Oct 4, 1989
The Doctor and Ace explore Victorian house Gabriel Chase and realise it hides just as many dark secrets in its drawing room as it does in its dark cellar.

E6Ghost Light (2)
Oct 11, 1989
The Doctor manages to rescue Ace from the husks and then tries to uncover the truth about the goings on in Josiah's house.

E7Ghost Light (3)
Oct 18, 1989
Only Redvers, still searching for the elusive Saxe-Coburg, seems able to withstand Light and communicate with Control. Ace realises her past actions need to be dealt with.

E8The Curse of Fenric (1)
Oct 25, 1989
England, the 1940s. The TARDIS brings the Doctor and Ace to a secret naval base during WWII. There, the time-travellers battle vampiric Haemovores and an ancient Viking curse!

E9The Curse of Fenric (2)
Nov 1, 1989
The Doctor and Ace manage to convince Sorin to release them while Millington and Judson attempt to translate the Viking runes.

E10The Curse of Fenric (3)
Nov 8, 1989
The Doctor and his friends come under attack from the Haemavores, allowing Millington to retrieve the flask containing Fenric's essence.

E11The Curse of Fenric (4)
Nov 15, 1989
Fenric is loose and planning to use the Ancient Haemovore to poison the Earth with chemicals, unless the Doctor can defeat him in their centuries old game.

E12Survival (1)
Nov 22, 1989
Perivale, England, the late 1980s. People are vanishing into thin air under the baleful stare of a very strange cat. The Doctor and Ace learn that, in the battle for survival, success can carry a terrible price...

E13Survival (2)
Nov 29, 1989
The Doctor and Paterson manage to escape from the Master and join up with Ace and her friends, where the Doctor tries to find a way to get them all off the planet before it explodes.

E14Survival (3)
Dec 6, 1989
Ace manages to transport the Doctor and the others back to Perivale but the Master is also there, preparing for a final showdown with the Doctor.
Storyline
The adventures of The Doctor, a time-traveling humanoid alien known as a Time Lord. He explores the universe in his TARDIS, a sentient time-traveling spaceship. Its exterior appears as a blue British police box, which was a common sight in Britain in 1963 when the series first aired. Along with a succession of companions, The Doctor faces a variety of foes while working to save civilizations, help ordinary people, and right many wrongs.
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