Tony Wilmott and Dan Garner lead us through three months of hard graft, excavating Britain's largest Roman amphitheatre in Chester, possibly built by Emperor Vespasian. Show more

Documentary which looks at how, during WWII, the Americans tried to get inside the mind of Hitler by ordering a team of Harvard psychologists to draw up a profile of him.

Documentary about the Secret History of the Mongols, a book said to have been written by Genghis Khan's adopted son which reveals a different man to the butcher of legend. Show more

Documentary that re-examines the attempt to blow up the Houses of Parliament in 1605. Computer graphics recreate the scene and show how close the plotters came to success. Show more

Documentary which looks at the rise to power and reign of terror of dictator Pol Pot, responsible for the deaths of two million people in the killing fields of Cambodia. Show more

Two ancient murder mysteries, dating back many centuries, are the focus of an investigation by archaeologists at the National Museum of Ireland. Show more

Drama-documentary telling the story of a deadly sea duel and one of the best intelligence bluffs of WWII, as Commodore Henry Harwood takes on the pride of the German navy. Show more