Watch History's Greatest Mysteries Season 4 Episode 15

Thousands of people swear they
Thousands of people swear they've encountered this legendary North American creature, but Bigfoot has never been officially identified. As evidence continues to mount, and photos are scrutinized, the mystery endures: does Bigfoot really exist? And if so, what is it--and where is it?

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Catching JFK's Killer History's Greatest Mysteries (Season 4)

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History's Greatest Mysteries: WHERE IS the Lost Ark of the Covenant?!