Mysterious events, compelling figures and great unanswered questions from the past are explored. Most historians have reached a consensus about the way major world events played out. Yet decades after the fact, certain stories remain touched by an air of uncertainty. Investigate the truth behind some of history's greatest events and most iconic people. Discover new clues about the reclusive billionaire Howard Hughes; the CIA's top-secret experiments; the Unabomber and; little known stories from NASA's Apollo missions.
| Season | From | To | Episodes |
|---|---|---|---|
| All Seasons | |||
| Specials | April 2013 | 2 | |
| Season 1 | June 2007 | March 2011 | 20 |
| Unassigned Episodes | 0 |
| Season | From | To | Episodes |
|---|---|---|---|
| Unassigned Episodes | 22 |
| Season | From | To | Episodes |
|---|---|---|---|
| Season 1 | 0 | ||
| Unassigned Episodes | 22 |
No actors for this record.
| Name | Number of Episodes | Dates | |
|---|---|---|---|
| Clare Nolan | 1 | 05/01/2010 |
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