Sky History 2 Monday

Theorists ask whether a currently unidentified species represented in human DNA could be a result of breeding between man and alien in the distant past

The world's top 10 mysterious devices, from strange, grooved disks found in a cave in China to an ancient Greek computer to an incredible crystal skull unearthed in Mexico

Dan Jones explores the history of York Castle, built on the orders of William the Conqueror and once the regional seat of British government

More than 4,000 years old, the pyramids of Egypt are celebrated architectural marvels, however no one fully understands how they were built, or why

A look at what it was really like to live and survive during one of the most devastating conflicts the world has ever seen

In a feature-length episode, Giorgio Tsoukalos investigates claims that Egypt was home to Earth's earliest extraterrestrial visitors

The efforts of Norwegian resistance fighters to return to their invaded homeland to carry out a daring mission to raid and destroy a hydroelectric plant

An attack on the Soviet oil fields could have won the Second World War for the Germans - but huge resistance thwarted Adolf Hitler's dream

The team compares the strange encounters of two men, one from Ohio and the other from Virginia, to see if there is evidence that they have had contact with extraterrestrials

Investigating 'the spear of destiny', which was first mentioned in the New Testament and is said to have pierced the side of Jesus and be connected to miracles

Among the magnificent items studied are an obsidian mirror and the Voynich Manuscript, an illustrated codex hand-written in an unknown, possibly meaningless writing system

The presenter contemplates mankind's desire to build long-lasting and remarkable structures that are much more than simple places of shelter or work

US YouTube sensation Beau Ouimette and presenter Rick Edwards search the UK's waterways in search of archaeological finds, beginning in Stirling

How skilled thieves Samuel Nalo and Robert Comfort carried out a robbery at New York's Pierre Hotel. The theft, in January 1972, saw them net $3million in assets, mainly jewellery

The Lufthansa heist at JFK International Airport, New York City. A clued-up mafia crew attempt the ambitious theft. Those involved disappeared and met their fate in the aftermath

Clues revealed in Katzie First Nation history lead the team members north. Kru Williams discovers 100-year-old court documents that shed light on Slumach himself

Professor Alice Roberts delves into the life and death of Anne, Queen of England from 1702 to 1714, who shockingly endured 17 failed pregnancies

In a feature-length episode, Giorgio Tsoukalos investigates claims that Egypt was home to Earth's earliest extraterrestrial visitors

Dan Jones explores the history of York Castle, built on the orders of William the Conqueror and once the regional seat of British government

A team of experts explores the weapons used to recklessly attack civilian populations, from the brutal trebuchet to the devastating atomic bomb

Events that are so destructive, so astounding, they must be directed by the hand of the Almighty

The Hudson Valley area of upstate New York, where more than 7,000 UFO sightings have been reported