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Charles II: Professor Alice Roberts forensically investigates King Charles II's death, using research, medical expertise and dramatic recreation to reach a possible conclusion. (S1, ep 1)

The Top Ten Alien Disasters: Explore the most devastating disasters ever documented that may have an otherworldly connection, from a flying monster to a deadly virus. (S16, ep 6)

The Returned: Thousands of people from every part of the world have reported being abducted by aliens, including even a world leader - President Kiran Ilyumzhinov. (S9, ep 15)

Iron Age Chariot: Alice Roberts follows archaeologists as they excavate Iron Age Britain's most spectacular grave - a Yorkshire chariot burial. (4 of 4)

Liza Tarbuck on Weather: Liza Tarbuck tackles the national obsession with all things weather-related. Season finale. (S1, ep 6)

The Homefront: In our final episode, we examine how each Axis Power had troubles on their own home front, leading to disaster in the final days of the war. (S1, ep 5)

Phoenix Lights: Craig Charles joins forces with world-renowned space journalist Sarah Cruddas to investigate some of the most perplexing UFO encounters of recent times. (S1, ep 6)

The Forbidden Bible: An exploration of the possibility that The Book of Enoch was stricken from the Bible because it documents humanity's extraterrestrial origins. (S12, ep 37)

The Vanishings: Experts explore the disappearance of civilisations throughout time and across the globe. Could clues left in their wake point to an otherwordly explanation? (S7, ep 9)

Remote Viewing: A look at the CIA's rumoured investment in psychological operations. Could there be an army of remote viewers watching American citizens today? (S1, ep 13)

Doomsday: On 8 April 2011, the FBI declassified decades of top secret government documents for the first time. Here, experts examine the possibility of the end of the world. (S1, ep 1)

...Bill Clinton. Separate But Unequal: Explore the history of the Presidency, beginning with racial tensions. Some have taken steps towards perfect union, others haven't. (1 of 6)

The U-Boat War: An insight into the Germans' perspective of events as they invaded and battled to the death, featuring expert analysis. (S1, ep 7)

Secrets of the Sumerians: When the ancient Sumerians built their civilisation, they credited their gods - but were these powerful beings actually extraterrestrial visitors? (S16, ep 7)

Shiva The Destroyer: Of all the Hindu gods, none is more important than Shiva, the great destroyer. Could the deity have been the leader of an extraterrestrial race? (S9, ep 16)

Warships of The World Wars: We examine how the battleship began the 20th century as a dominant force, but then saw its weaknesses exploited mercilessly in the World Wars. (S1, ep 1)

Torpedo Boats At War: From tests in the River Thames, to the German's deadly U-boat attacks in World War II, this episode explores the silent threat of submarines. (S1, ep 5)

Ireland: Craig Charles joins forces with world-renowned space journalist Sarah Cruddas to investigate some of the most perplexing UFO encounters of recent times. (S1, ep 2)

...Bill Clinton. Presidential Vision: Explore the history of the presidents who made an impact through imagining what we could be, not just what we are. (2 of 6)

From medieval Britain to the Northwest Passage in the Arctic, uncover the origins of the curses surrounding the Stone of Destiny, Landseer's Man Proposes, God Disposes and more. (S1, ep 2)

Fleeing Hellmira: Timothy Vail and Timothy Morgan were murderers incarcerated at Elmira State Prison. Vail wanted to escape, so he engaged Morgan in his plan to flee. (S1, ep 7)

West: Dr Alice Roberts explores a secret location in the Cotswolds, which gives up a very precious and fragile artefact. (1 of 4)

Viking York: Alice looks into the history of York, taking part in a Viking battle and examining an almost 1,000-year-old poo. (2 of 6)

The Stone Ball, the Electrocution Belt and the Cat Mummy that Wasn't: Uncovering the mystery of an ancient stone object with unique markings and a cat mummy with no cat inside. (S2, ep 1)

Condottiere - Italy's Dogs of War: Delve into medieval Italian knights, leaders and the armour they wore. (S3, ep 2)

Finger of Death: A grim discovery in a Swedish lake reveals shocking ancient practices. Meanwhile, in the Canadian Arctic, the fossil of a previously unknown mammal is found. (S3, ep 1)