User Score
4 votes
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.
Status
Ended
Type
Documentary
Seasons
4
Episodes
27
18 episodes
4 episodes
3 episodes
2 episodes
