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
Season 1
18 Episodes
Season 2
4 Episodes•2007
Season 3
3 Episodes•2008
Season 4
2 Episodes•2009
