Ancient Aliens
Season 4 Episode 3 - The Greys
Who are the beings with big heads and giant eyes that seem to have been visiting our planet for millennia? Known by researchers as the "greys," these mysterious beings have been depicted in rock-art and carved stone figures throughout the ages and all over the world. Who are they, what planet do they come from, and what do they want?
Episodes in Season 4
The Mayan Conspiracy
44 min
The Doomsday Prophecies
44 min
The Greys
44 min
Aliens and Mega-Disasters
44 min
The NASA Connection
44 min
The Mystery of Puma Punku
44 min
Aliens and Bigfoot
44 min
The Da Vinci Conspiracy
44 min
The Time Travelers
44 min
Aliens and Dinosaurs
44 min