| Greatest Unsolved Mysteries | We conclude the countdown of the greatest unsolved American mysteries and crimes with three cigars that changed the course of the American Civil War and a presidential assassination conspiracy. E10 | Sat, May 13, 3:00 am | That's TV (UK) | 60 mins |
| Greatest Unsolved Mysteries | We reach the top 10 in our countdown of America's greatest unsolved mysteries including the assassination of Martin Luther King, a witch hunt in Salem, and the missing minutes on Nixon's tapes. E9 | Fri, May 12, 3:00 am | That's TV (UK) | 60 mins |
| Greatest Unsolved Mysteries | Moving through our countdown of America's greatest unsolved mysteries and crimes, we uncover a secret society, and two baffling tales of disappearance - an American hero and a whole culture. E8 | Thu, May 11, 3:00 am | That's TV (UK) | 60 mins |
| Greatest Unsolved Mysteries | The countdown of crimes and mysteries that have baffled America continues with a bizarre blend of brutal murders, skyway robbery, lost riches, lost colonies, and an unexplained disappearance. E7 | Wed, May 10, 3:00 am | That's TV (UK) | 60 mins |
| Greatest Unsolved Mysteries | We've reached the top 25 in our countdown of unsolved mysteries including a famous outlaw who escaped his grave, an infamous gangland massacre never solved, and a secret mob assassin revealed. E6 | Tue, May 9, 3:00 am | That's TV (UK) | 60 mins |
| Greatest Unsolved Mysteries | We continue counting down America's greatest unsolved mysteries including the infamous escape from Alcatraz, the hunt for the New Orleans axeman, and did Butch Cassidy and the Sundance Kid survive? E5 | Mon, May 8, 3:00 am | That's TV (UK) | 60 mins |
| Greatest Unsolved Mysteries | Our look at mysteries that have baffled America continues with a look at the greatest unsolved art theft in history, the unexplained death of America's first mystery writer and if Bigfoot exists. E4 | Sun, May 7, 3:00 am | That's TV (UK) | 60 mins |
| Greatest Unsolved Mysteries | Our countdown of America's biggest mysteries continues with the story of the death of the first man of magic Harry Houdini, one of the old West's most prolific gunslingers, and the great moon hoax. E3 | Sat, May 6, 3:00 am | That's TV (UK) | 60 mins |
| Greatest Unsolved Mysteries | The countdown of America's most infamous mysteries continues and looks at General Custer's last stand, explores who whacked Bugsy Sigel, and investigates a deadly attack on Wall Street in 1920. E2 | Fri, May 5, 3:00 am | That's TV (UK) | 60 mins |
| Greatest Unsolved Mysteries | We begin the countdown of America's most notorious unsolved mysteries and crimes by exploring who killed Marilyn Monroe and ask if one of America's most infamous killers got away with murder. E1 | Thu, May 4, 3:00 am | That's TV (UK) | 60 mins |
| Greatest Unsolved Mysteries | We conclude the countdown of the greatest unsolved American mysteries and crimes with three cigars that changed the course of the American Civil War and a presidential assassination conspiracy. E10 | Sat, Apr 1, 10:10 am | That's TV (UK) | 55 mins |
| Greatest Unsolved Mysteries | We reach the top 10 in our countdown of America's greatest unsolved mysteries including the assassination of Martin Luther King, a witch hunt in Salem, and the missing minutes on Nixon's tapes. E9 | Fri, Mar 31, 11:15 am | That's TV (UK) | 60 mins |
| Greatest Unsolved Mysteries | Moving through our countdown of America's greatest unsolved mysteries and crimes, we uncover a secret society, and two baffling tales of disappearance - an American hero and a whole culture. E8 | Thu, Mar 30, 11:15 am | That's TV (UK) | 55 mins |
| Greatest Unsolved Mysteries | The countdown of crimes and mysteries that have baffled America continues with a bizarre blend of brutal murders, skyway robbery, lost riches, lost colonies, and an unexplained disappearance. E7 | Wed, Mar 29, 11:10 am | That's TV (UK) | 60 mins |
| Greatest Unsolved Mysteries | We've reached the top 25 in our countdown of unsolved mysteries including a famous outlaw who escaped his grave, an infamous gangland massacre never solved, and a secret mob assassin revealed. E6 | Tue, Mar 28, 11:00 am | That's TV (UK) | 55 mins |
| Greatest Unsolved Mysteries | We continue counting down America's greatest unsolved mysteries including the infamous escape from Alcatraz, the hunt for the New Orleans axeman, and did Butch Cassidy and the Sundance Kid survive? E5 | Mon, Mar 27, 11:10 am | That's TV (UK) | 55 mins |
| Greatest Unsolved Mysteries | Our look at mysteries that have baffled America continues with a look at the greatest unsolved art theft in history, the unexplained death of America's first mystery writer and if Bigfoot exists. E4 | Sun, Mar 26, 11:10 am | That's TV (UK) | 60 mins |
| Greatest Unsolved Mysteries | Our countdown of America's biggest mysteries continues with the story of the death of the first man of magic Harry Houdini, one of the old West's most prolific gunslingers, and the great moon hoax. E3 | Sat, Mar 25, 11:15 am | That's TV (UK) | 55 mins |
| Greatest Unsolved Mysteries | The countdown of America's most infamous mysteries continues and looks at General Custer's last stand, explores who whacked Bugsy Sigel, and investigates a deadly attack on Wall Street in 1920. E2 | Fri, Mar 24, 11:10 am | That's TV (UK) | 55 mins |
| Greatest Unsolved Mysteries | We begin the countdown of America's most notorious unsolved mysteries and crimes by exploring who killed Marilyn Monroe and ask if one of America's most infamous killers got away with murder. E1 | Thu, Mar 23, 11:10 am | That's TV (UK) | 60 mins |