History's Secrets
EndedIMDb 7.5/10
Documentary·4 Seasons
Mysterious events, compelling figures, and great unanswered questions from the past are explored in this National Geographic series.
Episodes
Season 4
S04 | E01
Secret History of the Atomic Bomb
2009-01-01
S04 | E02
The Hidden Lincoln
2009-01-01
All Seasons
Season 1
18 ep ·
Season 2
4 ep · 2007
Season 3
3 ep · 2008
Season 4
2 ep · 2009
