Timewatch

At 9am on 20 January 1607, a massive wave devastated the counties of the Bristol Channel. It came without warning, sweeping all before it. The flooding stretched inland as far as the Glastonbury Tor. Twohundred square miles of Somerset, Devon, Glamorganshire and Monmouthshire were inundated. Up to 2,000 people died. Yet for 400 years, the killer wave of 1607 has been forgotten. Timewatch relives the terror and the human tragedy of 1607 and follows the research of two scientists who are increasingly convinced that the wave was not simply a freak storm but a tsunami.

The Romans loved their bloody spectacles with gladiators and wild beasts, so they built amphitheatres all over their empire. In Britain there were at least 25 and the largest was in Chester, a fortress city ofhuge importance. What exactly did it look like and was it built by Emperor Vespasian, the man who built the Colosseum in Rome?

Two experts try to piece together how the biggest volcanic eruption ever recorded, at Mount Tambora in eastern Indonesia in 1815, brought about worldwide climate change and altered the lives of hundreds of thousands of people.

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.