Season 4 Episode Guide

Aliens and Dinosaurs

Season 4, Episode 10

May 4, 2012

The Time Travelers

Season 4, Episode 9

April 27, 2012

The Da Vinci Conspiracy

Season 4, Episode 8

April 6, 2012

Aliens and Bigfoot

Season 4, Episode 7

March 23, 2012

The Mystery of Puma Punku

Season 4, Episode 6

March 16, 2012

The NASA Connection

Season 4, Episode 5

March 9, 2012

Aliens and Mega-Disasters

Season 4, Episode 4

March 2, 2012

The Greys

Season 4, Episode 3

February 24, 2012

The Doomsday Prophecies

Season 4, Episode 2

February 17, 2012

The Mayan Conspiracy

Season 4, Episode 1

February 17, 2012

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  • Premiered: April 20, 2010
  • Rating: TV-14
  • User Rating:4.78 out of 5 (130 ratings)
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  • Premise: A series exploring theories regarding supposed alien visitations involving ancient civilizations. (more)

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