During Italy's reconquest, the Allies faced the Winter Line and called in the First Special Service Force, elite troops trained for brutal terrain warfare.

The eight artists are challenged to make a light fixture using techniques such as colour wrapping, hot sculpting and making bubbles with baking soda.

The seven contestants put their skills into making a glassy robot prototype that can preform chores and tasks.

Steve explores DB Cooper through a new lens, asking how he could have survived and escaped his jump into a dark and stormy November night.

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.

Images of Earth show cities glowing, while wilderness remains dark. Why is the Australian outback illuminated like a vast city.

A look at the first weeks of a war that would disrupt the lives of so many, starting with the first shots fired by the Japanese in July 1937, China.

Between September 1940 and November 1941, things intensify as Nazi Germany exert their dominance over Europe.

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 team analyses incredible NASA footage of reported UFOs, and interviews former NASA employees who allegedly witnessed cover ups first hand.

Archaeologists conduct a dig at Auckland Castle in Co Durham, which 700 years ago was home to a group of power-crazed bishops.

Rick and Beau return to tackle new rivers in a brand-new series. From Wales to Scotland, the pair investigate the cold and murky waters of historic sites.

Steve explores DB Cooper through a new lens, asking how he could have survived and escaped his jump into a dark and stormy November night.

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.

Images of Earth show cities glowing, while wilderness remains dark. Why is the Australian outback illuminated like a vast city.

A look at the first weeks of a war that would disrupt the lives of so many, starting with the first shots fired by the Japanese in July 1937, China.

Between September 1940 and November 1941, things intensify as Nazi Germany exert their dominance over Europe.

The 1717 wreck of Black Sam Bellamy's pirate ship Whydah yields treasure, skeletons and new insights into the hidden world of piracy.

At Mexico City's Templo Mayor, archaeologists uncover a 15th-century tower of 600 skulls, revealing new insights into Aztec sacrifice and ritual.

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 team analyses incredible NASA footage of reported UFOs, and interviews former NASA employees who allegedly witnessed cover ups first hand.

Archaeologists conduct a dig at Auckland Castle in Co Durham, which 700 years ago was home to a group of power-crazed bishops.

Rick and Beau return to tackle new rivers in a brand-new series. From Wales to Scotland, the pair investigate the cold and murky waters of historic sites.

Ton and Allen quarrel over their bidding strategy, and must race against the clock to unload a one man submersible that could be worth big money.

When an injury sidelines Allen at the shop, Ton goes rogue at auction, ignoring his partner's advice and making risky purchases.

The astonishing accounts of four railway journeys that changed history, including the perilous expedition that made a young Winston Churchill world famous.

Steve investigates the 1972 disappearance of the Begich/Boggs flight, a case that sparked the largest search in Alaska's history.

In a Danish bog, hundreds of mutilated ancient bones are found, while a mysterious deserted island belonging to Russia is explored.

Evidence of human activity is found in strange times and places and a new perspective on a biological activity known since the nineteenth century.

From December 1941 to May 1942, Singapore falls, the Wannsee Conference is held in Berlin and a single event in the Pacific transforms the war into a total global conflict.

By Spring 1942, German armies had taken control, the battles of Midway and Stalingrad begin and American's achieve a ground-breaking milestone in the development of atomic weapons.

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.

Two cousins encounter a "mothership" three times the size of a football stadium in 1996. In 1967, guards at an air force base in Montana spot a UFO and all hell breaks loose.

A couple spot a huge blimp-shaped craft hovering over Michigan's Lake Erie in 1988. In 1963, two sisters and their housekeeper report being knocked down by a UFO emitting flames.

The team search for artefacts from the country's first superhighway - the Bridgewater Canal.

Rick and Beau return to tackle new rivers in a brand-new series. From Wales to Scotland, the pair investigate the cold and murky waters of historic sites.

Steve investigates the 1972 disappearance of the Begich/Boggs flight, a case that sparked the largest search in Alaska's history.

In a Danish bog, hundreds of mutilated ancient bones are found, while a mysterious deserted island belonging to Russia is explored.

Evidence of human activity is found in strange times and places and a new perspective on a biological activity known since the nineteenth century.

From December 1941 to May 1942, Singapore falls, the Wannsee Conference is held in Berlin and a single event in the Pacific transforms the war into a total global conflict.

By Spring 1942, German armies had taken control, the battles of Midway and Stalingrad begin and American's achieve a ground-breaking milestone in the development of atomic weapons.

Le Cercle: What started as a Catholic conservative group is now rumoured to control world politics. Learn about the ultra-secretive, invitation-only policy forum named Le Cercle.

Scandals have accompanied human history since ancient times. Dive into the history of scandals and witness how they have changed over time.

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.

Two cousins encounter a "mothership" three times the size of a football stadium in 1996. In 1967, guards at an air force base in Montana spot a UFO and all hell breaks loose.

A couple spot a huge blimp-shaped craft hovering over Michigan's Lake Erie in 1988. In 1963, two sisters and their housekeeper report being knocked down by a UFO emitting flames.

The team search for artefacts from the country's first superhighway - the Bridgewater Canal.

Rick and Beau return to tackle new rivers in a brand-new series. From Wales to Scotland, the pair investigate the cold and murky waters of historic sites.

When a group of thugs try to bully Ton and Allen, the guys fight back, leading to a violent showdown and the discovery of a rare Bornean blowgun.

With a motocross bike and a rare stock whip up for grabs, Ton and Allen face their former employee Carolyn, who knows all their tricks and is out for revenge.

Learn how Lawrence of Arabia used guerilla warfare against the Ottoman Empire's railways. Also, what secrets lie under New York's Grand Central Station.

Steven Rinella explores historical mysteries through a survivalist lens, tackling questions like Roanoke and the Donner Party's fate.

Archaeologists in Russia find several mass graves, a World War II plane sits on a Canadian mountain and cosmic rays in Antarctica have stump experts.

Discover five new discoveries that are probably related to potential warfare and one possibly to wildlife.

1943 begins with the Casablanca Conference. Events unfold in the week of the Soviet victory in Stalingrad, and one of the best-selling songs in history is released.

Halfway through its fourth full year, the fortunes of war were running increasingly in favour of the Allies. The bombing of Hamburg and the Allied Tehran Conference take place.

When millions responded to a call to storm Area 51, the US military vowed deadly force. Are they hiding the truth about extraterrestrials on Earth.

Over the past 20 years, thousands of potentially habitable exoplanets have been found. Could they be home to intelligent extraterrestrial life.

Dozens of witnesses report seeing a fiery object falling through the Pennsylvania sky in 1965. In 1997, Phoenix residents claim to spot boomerang-shaped UFOs above their homes.

In 1993, a teenage girl walking her dog in Shropshire, England, witnesses a cylindrical object in the sky. School kids in Florida report multiple UFO sightings in 1967.

Uncovering the stories behind a Yorkshire garrison's stables and the horse the Germans could not kill.

Rick and Beau return to tackle new rivers in a brand-new series. From Wales to Scotland, the pair investigate the cold and murky waters of historic sites.

Steven Rinella explores historical mysteries through a survivalist lens, tackling questions like Roanoke and the Donner Party's fate.

Archaeologists in Russia find several mass graves, a World War II plane sits on a Canadian mountain and cosmic rays in Antarctica have stump experts.

Discover five new discoveries that are probably related to potential warfare and one possibly to wildlife.

1943 begins with the Casablanca Conference. Events unfold in the week of the Soviet victory in Stalingrad, and one of the best-selling songs in history is released.

Halfway through its fourth full year, the fortunes of war were running increasingly in favour of the Allies. The bombing of Hamburg and the Allied Tehran Conference take place.

The story behind the breath-taking temple complex, which is located in Cambodia and is the largest religious monument in the world.

Ignatius refuses to pledge his allegiance to the emperor and is forced to travel 1,800 miles to the Colosseum, where his final punishment awaits.

When millions responded to a call to storm Area 51, the US military vowed deadly force. Are they hiding the truth about extraterrestrials on Earth.

Over the past 20 years, thousands of potentially habitable exoplanets have been found. Could they be home to intelligent extraterrestrial life.

Dozens of witnesses report seeing a fiery object falling through the Pennsylvania sky in 1965. In 1997, Phoenix residents claim to spot boomerang-shaped UFOs above their homes.

In 1993, a teenage girl walking her dog in Shropshire, England, witnesses a cylindrical object in the sky. School kids in Florida report multiple UFO sightings in 1967.

Uncovering the stories behind a Yorkshire garrison's stables and the horse the Germans could not kill.

Rick and Beau return to tackle new rivers in a brand-new series. From Wales to Scotland, the pair investigate the cold and murky waters of historic sites.

Ton and Allen battle a pair of vicious female auction hunters who have an axe to grind.

The guys face a shady bidder with inside information and a former NFL star in a battle for a vintage football.

A look into how the efficiency of the rail networks on both sides helped cause the stalemate of the First World War.

Near Steve's cabin on Prince of Wales Island lies evidence of one of humanity's greatest milestones, humans' arrival in the Americas.

Human remains are discovered high in the Ecuadorian Andes, while a strange earthquake-like event is investigated in Canada.

Discover major natural anomalies and varied human activities never investigated before.

It's spring 1944 and on the Eastern Front, the momentum is firmly with allies as the war moves into its final, violent act.

By January 1945, it seemed the end of the war was in sight - but challenges still loomed on the Eastern Front, in the Pacific and in Western Europe.

Giorgio A Tsoukalos and David Childress explore the mysterious chain of man-made islets in Micronesia's Nan Madol. Could local legends be true.

In 1947, the US military collected debris of what they claimed was a crashed weather balloon outside Roswell, New Mexico. But was there more to it.

On a country Texas road in 1980, a diamond-shaped UFO melts a vehicle below. In 1967, a man in Manitoba encounters a flying disc and reports hearing voices inside.

In 1966, two Ohio police officers spot a strange light in the sky, triggering a chase across state lines. An ex-military man in Florida is knocked out by a beam of light in 1965.

An awe-inspiring year of archaeological digs with Dr Alice Roberts. Roman finds include an amazing coin hoard and a man buried on a pile of dead animals.

The Search for the Loch Ness Monster: Andy joins a team of Nessie experts to carry out the biggest search for the Loch Ness Monster in 50 years.

Near Steve's cabin on Prince of Wales Island lies evidence of one of humanity's greatest milestones, humans' arrival in the Americas.

Human remains are discovered high in the Ecuadorian Andes, while a strange earthquake-like event is investigated in Canada.

Discover major natural anomalies and varied human activities never investigated before.

It's spring 1944 and on the Eastern Front, the momentum is firmly with allies as the war moves into its final, violent act.

By January 1945, it seemed the end of the war was in sight - but challenges still loomed on the Eastern Front, in the Pacific and in Western Europe.

The greatest conqueror and general in history, Alexander the Great of Macedon, built one of the largest empires ever seen - and he did it in just 13 years.

Giorgio A Tsoukalos and David Childress explore the mysterious chain of man-made islets in Micronesia's Nan Madol. Could local legends be true.

In 1947, the US military collected debris of what they claimed was a crashed weather balloon outside Roswell, New Mexico. But was there more to it.

On a country Texas road in 1980, a diamond-shaped UFO melts a vehicle below. In 1967, a man in Manitoba encounters a flying disc and reports hearing voices inside.

In 1966, two Ohio police officers spot a strange light in the sky, triggering a chase across state lines. An ex-military man in Florida is knocked out by a beam of light in 1965.

An awe-inspiring year of archaeological digs with Dr Alice Roberts. Roman finds include an amazing coin hoard and a man buried on a pile of dead animals.

The Search for the Loch Ness Monster: Andy joins a team of Nessie experts to carry out the biggest search for the Loch Ness Monster in 50 years.

A friendly competition with former employee Carolyn turns into a vicious battle for a 1968 Corvette Stingray. Allen tests out his ninja skills.

Two fierce opponents best Ton and Allen at the auction, leaving the duo in the lurch with a 'trash unit' and little chance of breaking, even for the day.

Homefront: Eyewitness accounts of how trains were able to bring back troops from Dunkirk, and evacuate hundreds of children to safety.

Steven Rinella explores historical mysteries through survivalism, tackling questions like Roanoke's lost colony and the Donner Party's fate.

In Russia, 34,000-year-old graves are discovered. Meanwhile, a team attempts to locate a British World War II aeroplane that went missing in Iceland.

Investigate two examples of human activity in the US., one in Africa and one in Asia, with two natural phenomena where ice is a major factor.

In 1923, Adolf Hitler led the infamous Beer Hall Putsch, an attempt to take power in Germany by force. It was a day that would change the world forever, birthing Hitler's regime.

Film about a bold World War II operation that took place between 1940 and 1945, when an MI5 agent infiltrated a fascist network in Britain to intercept stolen documents.

An exploration of the possibility that The Book of Enoch was stricken from the Bible because it documents humanity's extraterrestrial origins.

From Egypt to Easter Island, towering figures built by ancient man stand watch over Earth. But do they depict visitors from another world.

A Japanese airline crew in 1986 encounter two UFOs en route from Paris to Tokyo. In 1979, a man in Minnesota skids off the road after a mysterious beam of light engulfs his car.

In 1977, Amazonian village locals have a frightening encounter when a UFO shoots beams of light at them. An Australian farmer sees a strange object descend from the sky in 1963.

Humans are found to have lived in Britain earlier than thought when tools are unearthed in Norfolk, while some of our ancestors' customs are revealed at another dig.

Andy embarks on a mission to unearth the Cornish sites of King Arthur, before magnet fishing for Excalibur and visiting the grave of a legendary witch.

Steven Rinella explores historical mysteries through survivalism, tackling questions like Roanoke's lost colony and the Donner Party's fate.

In Russia, 34,000-year-old graves are discovered. Meanwhile, a team attempts to locate a British World War II aeroplane that went missing in Iceland.

Investigate two examples of human activity in the US., one in Africa and one in Asia, with two natural phenomena where ice is a major factor.

In 1923, Adolf Hitler led the infamous Beer Hall Putsch, an attempt to take power in Germany by force. It was a day that would change the world forever, birthing Hitler's regime.

Film about a bold World War II operation that took place between 1940 and 1945, when an MI5 agent infiltrated a fascist network in Britain to intercept stolen documents.

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

The White House meets its fate in a world without people, and the President's dog must learn the way of the wild.

An exploration of the possibility that The Book of Enoch was stricken from the Bible because it documents humanity's extraterrestrial origins.

From Egypt to Easter Island, towering figures built by ancient man stand watch over Earth. But do they depict visitors from another world.

A Japanese airline crew in 1986 encounter two UFOs en route from Paris to Tokyo. In 1979, a man in Minnesota skids off the road after a mysterious beam of light engulfs his car.

In 1977, Amazonian village locals have a frightening encounter when a UFO shoots beams of light at them. An Australian farmer sees a strange object descend from the sky in 1963.

Humans are found to have lived in Britain earlier than thought when tools are unearthed in Norfolk, while some of our ancestors' customs are revealed at another dig.

Andy embarks on a mission to unearth the Cornish sites of King Arthur, before magnet fishing for Excalibur and visiting the grave of a legendary witch.

The pressures of running a shop are taking their toll, and even the discovery of a stuntman's fall bag doesn't help. As things get heated, Ton leaves town.

With Ton missing, Allen struggles to keep the pawn shop afloat while training Elle to work an auction.

Rise of the Machines: Examining moments of engineering ingenuity which made the difference between triumph and disaster on the battlefield - beginning with World War I.

Experts investigate whether ancient tales of beings with super-human powers could be inspired by extra-terrestrials who came to Earth in the past.

Inventor Nikola Tesla claimed to have direct communication with beings on other planets. Could this genius scientist have been a human 'receiver'.

1943 begins with the Casablanca Conference. Events unfold in the week of the Soviet victory in Stalingrad, and one of the best-selling songs in history is released.

Halfway through its fourth full year, the fortunes of war were running increasingly in favour of the Allies. The bombing of Hamburg and the Allied Tehran Conference take place.

The horrific story of one of the longest sieges in military history, told from the Russian perspective. More than a million citizens lost their lives.

Archaeologists conduct a dig at Auckland Castle in Co Durham, which 700 years ago was home to a group of power-crazed bishops.

Uncovering the stories behind a Yorkshire garrison's stables and the horse the Germans could not kill.

Rick and Beau return to tackle new rivers in a brand-new series. From Wales to Scotland, the pair investigate the cold and murky waters of historic sites.

Experts investigate whether ancient tales of beings with super-human powers could be inspired by extra-terrestrials who came to Earth in the past.

Inventor Nikola Tesla claimed to have direct communication with beings on other planets. Could this genius scientist have been a human 'receiver'.

Japan expands in Asia and Africa's colonies become key battlegrounds for power and resources.

In 1941, Hitler invaded the USSR. Operation Barbarossa stalls as winter hits and Soviet resistance, fuelled by propaganda, turns the tide.

In the spy game, listening, learning and gaining the ability to eavesdrop requires ingenuity.

Andy embarks on a mission to unearth the Cornish sites of King Arthur, before magnet fishing for Excalibur and visiting the grave of a legendary witch.

Evidence of human activity is found in strange times and places and a new perspective on a biological activity known since the nineteenth century.

Julius Caesar: As the Roman Republic churns with civil war, Julius Caesar, desperate for fame and honour, embarks on a brutal campaign to annex Gaul and build his own reputation.

The Forest Of Death: As the Roman Empire expands its reaches into what is now Germany, its legions are faced with ferocious Germanic tribesmen.

Experts investigate whether ancient tales of beings with super-human powers could be inspired by extra-terrestrials who came to Earth in the past.

Inventor Nikola Tesla claimed to have direct communication with beings on other planets. Could this genius scientist have been a human 'receiver'.

With the East Coast adventure slowly coming to an end, Peter and Elroy contemplate what they have found and learned throughout the journey.

The mega-rich love to display their wealth by acquiring flashy vehicles and the ancients were no different, whether it be chariots, horse-drawn carriages or boats.

All wealthy people have the resources to create their ideal home, but these industrial tycoons weren't content with building just one single house.

Japan expands in Asia and Africa's colonies become key battlegrounds for power and resources.

In 1941, Hitler invaded the USSR. Operation Barbarossa stalls as winter hits and Soviet resistance, fuelled by propaganda, turns the tide.

The contestant's next challenge is to make drinking glasses and decanters in a combination of fashion and function.

The remaining contestants must get creative to make colourful works of art out of everyday household items.

Ancient Astronaut Theorists investigate how ancient aliens may have helped to guide and define mankind in the remote past.

Experts question what the God Particle reveals about the origin of our world and whether clues to its significance could have been left by ancient aliens.

It's spring 1944 and on the Eastern Front, the momentum is firmly with allies as the war moves into its final, violent act.

By January 1945, it seemed the end of the war was in sight - but challenges still loomed on the Eastern Front, in the Pacific and in Western Europe.

It was one of bloodiest battles in the history of warfare and a turning point in the conflict. This is the story of Stalingrad from a uniquely Russian perspective.

The team search for artefacts from the country's first superhighway - the Bridgewater Canal.

An awe-inspiring year of archaeological digs with Dr Alice Roberts. Roman finds include an amazing coin hoard and a man buried on a pile of dead animals.

Rick and Beau return to tackle new rivers in a brand-new series. From Wales to Scotland, the pair investigate the cold and murky waters of historic sites.

Ancient Astronaut Theorists investigate how ancient aliens may have helped to guide and define mankind in the remote past.

Experts question what the God Particle reveals about the origin of our world and whether clues to its significance could have been left by ancient aliens.

In 1943, Germany fell at Stalingrad, its first major defeat. In the Pacific, Japan lost momentum after the US won at Guadalcanal.

In 1944, D-Day pierces the Atlantic Wall, as Operation Bagration crushes the Wehrmacht in the East. The fall of the Third Reich begins.

For some covert missions, assassination is the goal, and lethal toxins are deployed by spy agencies to kill perceived foes.

Andy is back in Cornwall searching for legends, meeting a real-life mermaid and fishing for Cornwall's infamous sea serpent Morgawr.

Discover five new discoveries that are probably related to potential warfare and one possibly to wildlife.

Attica, a 90-year-old maximum-security prison in upstate New York, has a legacy of violence and inmate abuse stretching back decades.

Situated 25 miles northwest of Kansas City, Leavenworth stood as the largest maximum-security federal prison in the United States for over a century.

The El Chapo Years: Sinaloa and El Chapo aim to be the world's largest drug cartel, but their success is threatened by authorities.

The Gotti Years: When John Gotti, a capo from the Bronx, becomes fed up with the greed of his boss, Paul Castellano, he orchestrates a mob hit.

Ancient Astronaut Theorists investigate how ancient aliens may have helped to guide and define mankind in the remote past.

Experts question what the God Particle reveals about the origin of our world and whether clues to its significance could have been left by ancient aliens.

Was the Ark of the Covenant stolen by King Solomon's son and taken to Ethiopia? Archaeologists investigate new, mysterious leads to uncover the truth.

Explore Seahenge's timber circle, a Ukrainian canoe, ancient remains in a mudslide and a relic from Lake Mead's dry bed.

In 1943, Germany fell at Stalingrad, its first major defeat. In the Pacific, Japan lost momentum after the US won at Guadalcanal.

In 1944, D-Day pierces the Atlantic Wall, as Operation Bagration crushes the Wehrmacht in the East. The fall of the Third Reich begins.

The contestants buddy up as they are challenged to make two-piece sculptures.

The remaining contestants are challenged to work with scale, colour and texture to create masterfully crafted botanical-themed pieces.

Discover unidentified objects witnessed by military pilots and a potential alien home in the darkness of space.

A mysterious volcanic island off the coast of Antarctica is explored, while the mummified remains of a teenage girl are found in the Peruvian Andes.

The face of Christ is discovered in a field in Hungary and a photo that claims to show who shot down a passenger jet in Ukraine.

Explore the men in charge whose rampant egos and misguided belief in their own abilities led to their country making fatal mistakes in the war.

Japan expands in Asia and Africa's colonies become key battlegrounds for power and resources.

New evidence reveals advanced civilisations might have existed on Earth thousands of years ago - is it possible that they lived with extraterrestrials.

In numerous ancient cultures, stories were told of ancestors from the Pleiades star cluster - could new scientific findings reveal the truth.

In 1966, a class of Melbourne students spot a UFO and are told never to speak of the incident. A man's car dies in 2009 after he spots a cigar-shaped object in the New York sky.

In 1968, airmen in North Dakota spot a huge UFO over one of the US' most high security Air Force bases. Papua New Guinea village locals report strange objects in the sky in 1959.

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

Andy is back in Cornwall searching for legends, meeting a real-life mermaid and fishing for Cornwall's infamous sea serpent Morgawr.

Discover unidentified objects witnessed by military pilots and a potential alien home in the darkness of space.

A mysterious volcanic island off the coast of Antarctica is explored, while the mummified remains of a teenage girl are found in the Peruvian Andes.

The face of Christ is discovered in a field in Hungary and a photo that claims to show who shot down a passenger jet in Ukraine.

Explore the men in charge whose rampant egos and misguided belief in their own abilities led to their country making fatal mistakes in the war.

Japan expands in Asia and Africa's colonies become key battlegrounds for power and resources.

The cave's eerie acoustics have been associated with supernatural phenomena, earning it a reputation for connecting visitors to the spirit world.

In the ancient Burnt City of Shahre Sukhteh, Iran, archaeologists uncover a remarkable discovery. The oldest known prosthetic eye, made of gold.

New evidence reveals advanced civilisations might have existed on Earth thousands of years ago - is it possible that they lived with extraterrestrials.

In numerous ancient cultures, stories were told of ancestors from the Pleiades star cluster - could new scientific findings reveal the truth.

In 1966, a class of Melbourne students spot a UFO and are told never to speak of the incident. A man's car dies in 2009 after he spots a cigar-shaped object in the New York sky.

In 1968, airmen in North Dakota spot a huge UFO over one of the US' most high security Air Force bases. Papua New Guinea village locals report strange objects in the sky in 1959.

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

Andy is back in Cornwall searching for legends, meeting a real-life mermaid and fishing for Cornwall's infamous sea serpent Morgawr.

When Ton and Allen find themselves bidding against each other at an auction, their epic showdown leaves both their business and friendship in question.

After a crushing defeat, the guys scramble to find new merchandise at a yard sale.

Examining the machines used by the iconic military unit "The Desert Rats" in the North African desert campaign of World War 2.

As we plan to travel to new worlds, how are we preparing to become human extraterrestrials? Will we survive into the unknown.

Mysterious industrial waste is discovered in an uninhabited part of Greenland. Meanwhile, strange mounds are found deep within the Arctic Circle.

We investigate one natural phenomenon, four shapes that resemble human origin and monitor one example of human origin and current destruction.

Explore how the seeds of Japan's defeat in 1945 were sown a decade earlier with the occupation of Manchuria in China.

In 1941, Hitler invaded the USSR. Operation Barbarossa stalls as winter hits and Soviet resistance, fuelled by propaganda, turns the tide.

UFO witnesses have reported a variety of objects in Earth's skies for centuries - could they offer clues about more intelligent life in our galaxy.

Chile has the highest number of UFO sightings of anywhere on Earth. Now, incredible footage of a strange craft has people asking again about the reasons why.

A teenager sees a mushroom-shaped object appear in the field while feeding his sheep in 1971. In 2000, police officers in Illinois chase a triangular UFO the size of a house.

In 2000, two brothers spot a UFO the size of six football fields after a hunting in Idaho. A Madagascan city is plunged into darkness when a metal craft hovers overhead in 1954.

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

Andy explores an ancient cavern, takes a tour of Dartmoor's prison museum and uncovers the legend behind Arthur Conan Doyle's 'The Hound of the Baskervilles'.

As we plan to travel to new worlds, how are we preparing to become human extraterrestrials? Will we survive into the unknown.

Mysterious industrial waste is discovered in an uninhabited part of Greenland. Meanwhile, strange mounds are found deep within the Arctic Circle.

We investigate one natural phenomenon, four shapes that resemble human origin and monitor one example of human origin and current destruction.

Explore how the seeds of Japan's defeat in 1945 were sown a decade earlier with the occupation of Manchuria in China.

In 1941, Hitler invaded the USSR. Operation Barbarossa stalls as winter hits and Soviet resistance, fuelled by propaganda, turns the tide.

The Freemasons: The Freemasons' fundamental ideals are liberty, equality, fraternity, tolerance and humanity. But others say that this secret society has very different goals.

The Kennedy assassination, Pizzagate, Coronavirus - conspiracy theories are booming, thanks in part to the internet. But they are not a modern phenomenon.

UFO witnesses have reported a variety of objects in Earth's skies for centuries - could they offer clues about more intelligent life in our galaxy.

Chile has the highest number of UFO sightings of anywhere on Earth. Now, incredible footage of a strange craft has people asking again about the reasons why.

A teenager sees a mushroom-shaped object appear in the field while feeding his sheep in 1971. In 2000, police officers in Illinois chase a triangular UFO the size of a house.

In 2000, two brothers spot a UFO the size of six football fields after a hunting in Idaho. A Madagascan city is plunged into darkness when a metal craft hovers overhead in 1954.

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

Andy explores an ancient cavern, takes a tour of Dartmoor's prison museum and uncovers the legend behind Arthur Conan Doyle's 'The Hound of the Baskervilles'.

After a tough auction, things get worse when the shop's landlord wants to talk.

When a ruthless storeowner seems hell-bent on stopping Ton and Allen from scoring new items, they fight back. The guys uncover a rare antique airgun.

The story of one American GI and how he and his Harley motorbike became a legend.

Earth remains a mystery to the billions of people on it. How did it come to exist? And how long will humans call it 'home'.

A group of hikers trekking across the Italian Alps stumble upon abandoned military infrastructure. What purpose did these camouflaged buildings serve.

Satellite images could explain desert ruins rumoured to be an entrance to an underworld and a city-sized chunk of ice suddenly disappears in Antarctica.

Explore how the Axis Powers' ruthless, brutal occupation and exploitation of other countries contributed to their demise.

In 1943, Germany fell at Stalingrad, its first major defeat. In the Pacific, Japan lost momentum after the US won at Guadalcanal.

What is it about the number 12? It holds divine significance in numerous sacred traditions and it's found repeatedly in ancient architecture. But why.

According to the earliest Tibetan traditions, hidden in the Himalaya Mountains is Shambhala, a kingdom of the gods. Does this mystical realm truly exist.

In 1980, soldiers encounter a luminous craft and dancing red lights in Suffolk. Witnesses report a metallic UFO hovering over water and crashing in Nova Scotia in 1967.

Texan farm workers are confronted by a 200-foot long object in the sky in 1957. In 1979, a UFO releases spiked spheres that leave a man unconscious in Scotland.

A newly discovered town in Devon turns history on its head and there's a shocking find by the Thames - almost 100 baby skeletons.

Andy searches for dragons in Somerset, visits the grave of Arthur and Guinevere and tests the healing waters of a spring once used to wash the Holy Grail.

Earth remains a mystery to the billions of people on it. How did it come to exist? And how long will humans call it 'home'.

A group of hikers trekking across the Italian Alps stumble upon abandoned military infrastructure. What purpose did these camouflaged buildings serve.

Satellite images could explain desert ruins rumoured to be an entrance to an underworld and a city-sized chunk of ice suddenly disappears in Antarctica.

Explore how the Axis Powers' ruthless, brutal occupation and exploitation of other countries contributed to their demise.

In 1943, Germany fell at Stalingrad, its first major defeat. In the Pacific, Japan lost momentum after the US won at Guadalcanal.

Built in 537, this is a walk-through the stunning place of worship located in Istanbul, Turkey.

Galen of Pergamon makes a name for himself as a physician for gladiators. Meanwhile, a devastating plague sweeps through the city.