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The murder in 1943 of Sir Harry Oakes in the Bahamas, where the Duke of Windsor was governor at the time and influenced the outcome of his murder trial.

Experts scrutinise the paintings, journals and technical drawings of Leonardo Da Vinci. Could they hide evidence of extra-terrestrial beings.

Scientists explore the possibility that sightings of alien beings or UFOs may be evidence of time travellers from the future.

Amazing CGI graphics tell the story of how the USS Enterprise and sister carriers Yorktown and Hornet turned the tide of the Pacific battle during WWII.

In 1934, Hitler's government is firmly in the saddle. Most Germans support Hitler's anti-Jewish policy and the regime's terror soon escalates.

In 2008, a shadow was cast over Stephenville, Texas, when a UFO passed overhead at supersonic speed. Craig and Sarah speak to an eyewitness and investigate.

Many believe Hitler and key members of his inner circle survived the fall of Berlin. If so, where did they go? And did they flee with plans for revenge.

Are governments secretly preparing for an alien attack? From death stars to satellites, experts explore the likelihood of an extra-terrestrial strike.

In this round, the competitors are put to the test as they are tasked with creating a sculpture that captures the heat, energy and emotion of fire.

In a pulsating season finale, the two remaining competitors must fill a gallery space with a show-stopping installation.

Have the US and Russia been working together from the beginning of the Space Race in preparation for the ultimate extraterrestrial encounter.

Ancient Astronaut theorists explore the idea that meteorites could be pieces of extraterrestrial technology.

New weapons with immense force define the wars of the 20th century as international experts test the catastrophic effects of destructive weaponry.

A daring dash through Nazi Europe, a deadly mountain escape and WWII's largest breakout, by men who chose death over dishonour.

The story of a deadly war that intertwines Germany, Poland, Japan, Italy and Spain, and the remorseless development of weapons and bombers. (2 of.

Have the US and Russia been working together from the beginning of the Space Race in preparation for the ultimate extraterrestrial encounter.

Ancient Astronaut theorists explore the idea that meteorites could be pieces of extraterrestrial technology.

In Northumbria, skeletons tell tales of violent death and tenderness, and people curate grave goods in an amazing community project.

Dr Alice Roberts pays tribute to the Bard, visiting Shakespeare's first theatre in London's Shoreditch and sifting through the poet's rubbish.

Alice Roberts and Matt Williams present more outstanding archaeology. In the east of Britain, sites include Must Farm, Colchester, Oakington, Lyminge and Silchester.

Alice Roberts and Matt Williams visit the Dorset Country Museum, where they explore finds from archaeological digs across the west of Britain.

Alice Roberts and Matt Williams visit the Neolithic Orkney World Heritage Site, where they explore finds from archaeological digs across the north of Britain.

What happened to a Desert Storm pilot who went missing after being shot down in Iraq? Veterans Rudy Reyes and Ronnie Adkins break down the evidence.

Discover WWII's most daring breakout stories of courage and cunning: Colditz Castle, The Great Escape and the bold Warburg Wire Job.

From Las Vegas to Dubai's Burj Khalifa, as sand, salt and sun dismantle cities, the wastelands quietly take back the ground borrowed.

Bigfoot Train Sighting, Jesus and Aliens and Iceland's Loch Ness Monster: Did a couple in Colorado spot Bigfoot from the window of a moving train.

Pythons in the Ceiling, Train Tunnel Escape, Suspicious Plane Crash & Russian Concord Crash: A man seeking his 15 minutes of internet fame crashes his plane into a forest.

Have the US and Russia been working together from the beginning of the Space Race in preparation for the ultimate extraterrestrial encounter.