History's Secrets
- Genre: Documentary
- Last Air Date: 2011-01-25
- Total Seasons: 4
- Total Episodes: 27
- Status: Ended
- Episode Runtime: 45 min.
- Production Company: National Geographic
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.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | The Hunt for Hitler | 2007-06-08 | 50 min |
| Season 1 | Episode 2 | The Hunt for the Boston Strangler | 2007-06-04 | 50 min |
| Season 1 | Episode 3 | The Romanovs | 50 min | |
| Season 1 | Episode 4 | The Real Roswell Conspiracy | 50 min | |
| Season 1 | Episode 5 | The Secrets of J. Edgar Hoover | 2009-06-10 | 50 min |
| Season 1 | Episode 6 | Where's Amelia Earhart | 50 min | |
| Season 1 | Episode 7 | Howard Hughes Revealed | 2011-03-31 | 50 min |
| Season 1 | Episode 8 | Hunt for the Unabomber : Ted Kaczynski | 50 min | |
| Season 1 | Episode 9 | Secrets of the Moon Landing | 2001-05-01 | 50 min |
| Season 1 | Episode 10 | CIA Secret Experiments | 2008-03-10 | 50 min |
| Season 1 | Episode 11 | Secret History of the Atomic Bomb | 2010-04-15 | 50 min |
| Season 1 | Episode 12 | Vanished From Alcatraz | 2012-03-07 | 50 min |
| Season 1 | Episode 13 | The Secret Life of Charles Lindbergh | 2011-02-18 | 50 min |
| Season 1 | Episode 14 | Hunting the Anthrax Killer | 2009-06-30 | 50 min |
| Season 1 | Episode 15 | Skyjacker That Got Away | 50 min | |
| Season 1 | Episode 16 | The Real George Washington | 2010-11-19 | 50 min |
| Season 1 | Episode 17 | Secrets of the Virgin Queen | 50 min | |
| Season 1 | Episode 18 | Sicily's Mummies | 50 min | |
| Season 1 | Episode 19 | Mystery of the Murdered Saints | 50 min |
