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History's Secrets
7.5/10
Seasons: 4
Country:US
Overview:
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 missions.
Seasons
4
Episode Runtime
45 Minutes
First Air Date
Rating
7.5
Production companies
National Geographic
Genre
Documentary