Investigation Alien
In this gripping docuseries, legendary reporter George Knapp travels the globe to uncover new evidence about UFOs and investigate their presence on Earth.
Episodes
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Cast
Images
Recommended
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Top Secret UFO Projects Declassified
Ancient Aliens
Hangar 1: The UFO Files
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Seconds from Disaster
History's Greatest Mysteries
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LIGHT & MAGIC
The Manhattan Alien Abduction
How Do They Do It?
Our Universe
One Strange Rock
How the Universe Works
Universe
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