Documentary
The Best Seasons of History's Secrets
Every season of History's Secrets ever, ranked from best to worst by thousands of votes from fans of the show. The best seasons of History's Secrets!
Mysterious events, compelling figures and great unanswered questions from the past are explored, with a focus on the reclusive billionaire Howard Hughes; the CIA's top-secret experiments; the Unabomber and; little known stories from NASA's Apollo
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