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Discover the top ten mysterious monoliths, from a 500-ton stone tied to UFOs to giant statues hinting at advanced tech and visitors.

Caroline Roberts, one of the surviving victims of serial killers Rose and Fred West, is among those revisiting the couple's horrific 1970s murder spree.

Missionaries Marcus and Narcissa settle by the Columbia River to convert the Cayuse. Cultural clashes and a measles outbreak spark a confrontation.

The abduction of nine-year-old Cynthia kicks off a series of increasingly deadly confrontations between her Comanche captors and the newly independent Texas.

Could aliens have already landed on Earth? Experts visit the Texas cemetery believed to hold the body of a life form that crashed there in 1897.

Experts explore a Hindu scripture describing a huge flying creature that landed on Earth. Could this monster have been an alien craft from outer space.

Each episode explores three artefacts drawn from museum collections, private archives and Bruce's own unrivalled holdings.

Each episode explores three artefacts drawn from museum collections, private archives and Bruce's own unrivalled holdings.

Ten archaeological finds, including mysterious spheres and a lost city, challenge our views on human origins and extraterrestrial links.

Discover the top ten mysterious monoliths, from a 500-ton stone tied to UFOs to giant statues hinting at advanced tech and visitors.

When Samantha and Ronald develop a connection, they hatch an ambitious escape plan that utilises Ron's experience as a helicopter pilot.

In 2000, with well-planned ploys, seven prisoners escaped a Texas unit using strength, wit, disguises and plenty of teamwork.

Russian designer Nikolay decided to engineer a solution to trench warfare with an armoured vehicle with wheels that could move over any terrain.

Fish remains found near an angry Sumatran volcano could suggest a new human migration route and a collapsed kingdom in Turkey gets discovered.

Examine the story of Queen Tiye, who - over 3,000 years ago - surpassed her rivals and inspired a religious revolution that changed Egypt and the world.

Nature: Mother Nature may be breathtaking-but she doesn't always play nice.

When the world throws you a bizarre problem, the solution can be even stranger.

Ten archaeological finds, including mysterious spheres and a lost city, challenge our views on human origins and extraterrestrial links.