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Experts investigate why so many UFOs have been spotted near remote islands. Could these far-removed spots be the earthly homes of aliens.

Stories of hospital ships and those who served on them, including the tragic story of the sinking of the Titanic's sister vessel, The Britannic.

Investigation into Jeremy Bamber's murder of his family in Essex in 1985. Sentenced for life, he still maintains he is innocent. Is the right person behind bars.

At the end of 1939, the German Army invades Poland. Examine how Hitler succeeded in pushing through his rearmament and war plans relatively unhindered.

Explore the theme of society and myths that engulf memories of the past. These myths often become woven into the fabric of our society and can pass through generations.

The Battle of Qadesh: A battle worthy of Hollywood that founded the glory of Ramses II when he faces the king Muwatalli II at Qadesh.

Experts investigate an Italian mountain that's stood witness to inexplicable phenomena for centuries. Could it somehow be attracting alien visitors.

A DNA study released in 2018 revealed that the original builders of Stonehenge mysteriously vanished - did they head back to a home among the stars.

Investigation into Jeremy Bamber's murder of his family in Essex in 1985. Sentenced for life, he still maintains he is innocent. Is the right person behind bars.

Ancient alien experts investigate the mysterious and fearsome Norse Gods. Were they divine? Or could the all-powerful Vikings have been guided by aliens.

A look at the controversial ancient alien theories of Erich von Däniken, whose books have sold over 65 million copies worldwide.

Could ancient rulers have had otherworldly links? Experts examine whether history's most powerful leaders were 'chosen' and guided by aliens.

A man is ready to liquidate his collection of dinosaur fossils and other quirky items and Scott hunts for maritime treasures while Sheldon eats oysters.

Could aliens have given our brains incredible untapped abilities? Experts ask whether harnessing these hidden powers could spark the next step in our evolution.

Experts question the link between divine substances and extraterrestrials. Could the food of the gods really have been sustaining Earth's alien visitors.

The eight year-old's disappearance and murder shocked the nation. Here, Sarah's mum reveals her tireless campaign to protect other children from paedophilia.

We learn about life on a Tudor ship from objects found on the Mary Rose, while on HMS Victory we learn the battle-winning tactics of Admiral Nelson.

The defeat at Stalingrad in 1943 was the turning point of the war and convinced the Nazi leadership to intensify their terror and propaganda campaigns.

Could aliens have given our brains incredible untapped abilities? Experts ask whether harnessing these hidden powers could spark the next step in our evolution.

Experts question the link between divine substances and extraterrestrials. Could the food of the gods really have been sustaining Earth's alien visitors.

When a mysterious circular stone structure is discovered in Scotland, experts investigate whether it's the fabled Round Table of King Arthur.

Experts investigate tunnels rumoured to be the hiding place of lost royal treasure, they find evidence of human sacrifice for Viking god Odin.

Evidence might finally identify the hiding place of the billion-dollar Nazi gold train and blood-red river in Siberia points to catastrophic pollution.

An ancient man-made volcano might reveal bloody human sacrifice and a mystery in the Sahara might have a sinister explanation.

Man-made islands are spotted near a Korean missile facility and when something unexpected is found in a desert, experts investigate a lost city of giants.

Ships don't have to be large to make history, like the 1776 gunboat built to stop a British invasion, or the remarkable story of the HA-19 sub.

The parents of innocent 11-year-old Rhys Jones, shot on his way home from football club in Liverpool 2007, speak about the harrowing day when they lost their son.

In the shadow of the war, the Nazi regime gradually advances its "final solution to the Jewish problem.

Himmler's desire to unearth the true origins of humanity led to an attempt to prove the Paleolithic past of Germany's Aryan race.

Fritz Todt was the man tasked with engineering projects including the autobahn, the West Wall defences and more. But in 1942, he died under mysterious circumstances.

Could aliens have given our brains incredible untapped abilities? Experts ask whether harnessing these hidden powers could spark the next step in our evolution.

Experts question the link between divine substances and extraterrestrials. Could the food of the gods really have been sustaining Earth's alien visitors.

The parents of innocent 11-year-old Rhys Jones, shot on his way home from football club in Liverpool 2007, speak about the harrowing day when they lost their son.

A ghost town covered in a strange, white power emerges from a lake in Argentina and a declassified CIA image uncovers a bizarre, giant Soviet weapon.

When a man-made island mysteriously appears off the US coast, grisly new evidence points to secret government experiments into psycho-chemical warfare.

A forbidden island points to a strange South American town that locals claim was the home of Adolf Hitler and a pit of bodies suggests fears of a zombie nightmare.

In Nova Scotia, Scott pays top dollar for a mechanical rooster and two treasures are found inside a decrepit storage barn.

Tattoos, piercings and body modifications are big business. But could our desire for these changes stem from a profound link to our ancestors.

Nestled in Utah lies a ranch some believe to be a hotbed of strange phenomena. Is it all connected to an alien entity known as the Skinwalker.

Police and witnesses reflect on David Copeland's nail bomb terror in 1999. Blasts in Soho, Brixton and Brick Lane killed three and injured over 100.

A look at the tactics employed to pass strategically important ships under the nose of the enemy, and the use of intelligence to carry out naval attacks.

In 1945, WWII was over but the violence had not ended. The survivors want to blame the Germans. The reckoning with National Socialism is ambivalent.

Tattoos, piercings and body modifications are big business. But could our desire for these changes stem from a profound link to our ancestors.

Nestled in Utah lies a ranch some believe to be a hotbed of strange phenomena. Is it all connected to an alien entity known as the Skinwalker.

Taking place 110 miles behind enemy lines in a treacherous harbour, the Korean War's Battle of Incheon was one of the riskiest assaults in history.

Follow the major operations that have taken place in the Persian Gulf - from Earnest Will to Desert Storm - and examine the combat vessels from both sides.

Uncover the truth behind some of history's most mysterious sinkings, from a sunken World War I cruiser to a British Destroyer from the Falklands War.

Speed is always vital in naval combat, so buckle up and examine maritime warfare's fastest and most furious vessels of the last 150 years.

From the broadside cannons of 16th-century warships to thermonuclear warheads aboard Cold War subs, the naval arms race continues to evolve at a rapid pace.

We learn about life on a Tudor ship from objects found on the Mary Rose, while on HMS Victory we learn the battle-winning tactics of Admiral Nelson.

Documentary examining the fatal stabbing of 21-year-old motorist Stephen Cameron during an altercation on the M25 in 1996.

Along with Treblinka and Majdanek, Sobibor was one of the camps used in Operation Reinhard, in which the Nazis murdered almost two million people.

A new report is made every 55 hours in Washington state, which is America's highest rate of UFO sightings per capita - but why are UFOs choosing to hover here.

Thousands of UFO sightings and abductions are reported every year. This series examines these accounts and casts new light on historic cases.

Tattoos, piercings and body modifications are big business. But could our desire for these changes stem from a profound link to our ancestors.