The Avengers
Season 4 Episode 21 - A Touch of Brimstone
When a group of hoaxsters called the Hellfire Club mix murder with their mischief, Steed and Emma demonstrate a few tricks of their own. The whalebone corset, high laced boots and spiked dog-collar Emma wears as the "Queen of Sin" were designed by Diana Rigg herself, and resulted in A Touch of Brimstone being banned from American TV.
Episodes in Season 4
The Town of No Return
The Gravediggers
The Cybernauts
Death at Bargain Prices
Castle De'ath
The Master Minds
The Murder Market
60 min
A Surfeit of H2O
50 min
The Hour that Never Was
Dial a Deadly Number
Man-Eater of Surrey Green
60 min
Two's a Crowd
Too Many Christmas Trees
Silent Dust
Room Without a View
Small Game For Big Hunters
The Girl From Auntie
49 min
The Thirteenth Hole
60 min
Quick-Quick Slow Death
The Danger Makers
A Touch of Brimstone
What the Butler Saw
The House That Jack Built
A Sense of History
How to Succeed... at Murder
60 min