The Monoliths: Giorgio Tsoukalos takes a closer look at the evidence as he asks whether Earth's stone monoliths were built with extra terrestrial help.

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.

Democracy Without Democrats 1929-1933: A protest turns into a racist and anti-Jewish movement during the 1920s and the NSDAP use emotions to gain the loyalty of the people.

The Racial State 1933-1934: President Hindenburg suspends freedom of speech and Hitler comes to power in 1933. The first concentration camps for political opponents are set up.

Hard Way Back: Series highlighting what life was like during WWII. Rookie platoon leader Charles Scheffel suffers his first losses as he battles Rommel's Afrika Korps in Tunisia.

End Game: It is the final push in Europe, but before the Nazis surrender infantryman Rockie Blunt witnesses one of the greatest tragedies of the war: the concentration camps.

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

The American Navy is on the offensive and the first strike is on the Solomon Islands. Join the USS Enterprise as it supports the first American invasion.

Follow a battle for survival in a terrible day of vicious WWII combat, when the USS Enterprise lost many of her crew and her sister ship, the USS Hornet.

Democracy Without Democrats 1929-1933: A protest turns into a racist and anti-Jewish movement during the 1920s and the NSDAP use emotions to gain the loyalty of the people.

The Racial State 1933-1934: President Hindenburg suspends freedom of speech and Hitler comes to power in 1933. The first concentration camps for political opponents are set up.

Shall We Go On: Germany builds its empire in Europe, aiming to crush Britain with the Luftwaffe while France is conquered and divided as Churchill rejects peace.

A massive force of water threatens to destroy everything, from famous paintings to whole cities. The fate of the Sydney Opera House looks bleak.

The Costa Del Crime: When a century-old extradition treaty between Britain and Spain ended in 1978, the Spanish Coast became a safe haven for the mafia and criminal masterminds.

The US had to beat the Nazis in the race to create an atomic bomb, so they built many secret nuclear facilities. Here, the controversial sites are re-created.

Theorists investigate whether sought-after religious relic the Ark of the Covenant could hold connections to our extraterrestrial past.

The Monoliths: Giorgio Tsoukalos takes a closer look at the evidence as he asks whether Earth's stone monoliths were built with extra terrestrial help.

The team explore mystery cults and ancient catacombs to determine whether it's possible that the Ark of the Covenant was stolen and hidden in Rome.

Attila and his violent tribe of nomad warriors known as the Huns.

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

Controversial royal Prince George perished in a plane crash in 1942. Was a pilot error or sabotage to blame.

End Game: It is the final push in Europe, but before the Nazis surrender infantryman Rockie Blunt witnesses one of the greatest tragedies of the war: the concentration camps.

Learn about the mysterious triangles - in Bermuda, Alaska, Japan and elsewhere - where ships, planes and people enter and disappear.

New theories shed light on the world's biggest mysteries, including the unsolved disappearances of aviator Amelia Earhart and hijacker DB Cooper.

Photos from 1951 suggest that a woman spontaneously combusted, while a brain-numbing noise plagues Brooklyn.

Part One: Hear about the personal rivalry between Winston Churchill and Adolf Hitler, exploring how their exploits in World War I shaped their future commands.

Part Two: Through archive footage, see how these radically different characters clashed in a fascinating subplot of World War II.

Hundreds of seemingly alien discs are found in China, only to be taken by the Chinese government and dismissed as a hoax. Is there more to the story.

Alien Messages: Could some of our ancient texts and structures be home to secret messages left by alien ancestors? If so, what can we learn from them.

The New Frontier: With science closer than ever to proving that life once lived on Mars, is there a chance that something still exists there.

With light from distant stars taking millions of years to reach us, how long might it take for alien life to answer any communication sent into space.

Dan is in the heart of Snowdonia exploring a Caernarfon Castle - built not only as an impenetrable fortress but also as a lavish royal palace fit for a fairy tale.

Hugh and the team search for the remains of a Norman motte and bailey castle in the suburb of West Derby and uncover gems in the residents' gardens.

Learn about the mysterious triangles - in Bermuda, Alaska, Japan and elsewhere - where ships, planes and people enter and disappear.

New theories shed light on the world's biggest mysteries, including the unsolved disappearances of aviator Amelia Earhart and hijacker DB Cooper.

Photos from 1951 suggest that a woman spontaneously combusted, while a brain-numbing noise plagues Brooklyn.

Part One: Hear about the personal rivalry between Winston Churchill and Adolf Hitler, exploring how their exploits in World War I shaped their future commands.

Part Two: Through archive footage, see how these radically different characters clashed in a fascinating subplot of World War II.

After four years of horror on the battlefield, the Allies are in danger of losing to Germany. General John J Pershing races to train the untested American Army.

Hundreds of seemingly alien discs are found in China, only to be taken by the Chinese government and dismissed as a hoax. Is there more to the story.

Alien Messages: Could some of our ancient texts and structures be home to secret messages left by alien ancestors? If so, what can we learn from them.

With light from distant stars taking millions of years to reach us, how long might it take for alien life to answer any communication sent into space.

The New Frontier: With science closer than ever to proving that life once lived on Mars, is there a chance that something still exists there.

Dan is in the heart of Snowdonia exploring a Caernarfon Castle - built not only as an impenetrable fortress but also as a lavish royal palace fit for a fairy tale.

Hugh and the team search for the remains of a Norman motte and bailey castle in the suburb of West Derby and uncover gems in the residents' gardens.

The New Frontier: With science closer than ever to proving that life once lived on Mars, is there a chance that something still exists there.

Allen and Ton uncover a 1953 Chevy-inspired bumper car, a stash of M16 30-round magazines, and a set of homemade spud gun potato launchers.

The guys gamble on big units in Vegas, where they win a 1974 death-defying Zig Zag magic sword box and a rare 1910 poster of magician Chung Ling Soo.

Dive into the 'game changing' ships that turned the tide of war and made history, from the grand USS Constitution to the small and speedy CMB-4.

The Founding Fathers established the pillars of freedom and democracy in the US, but what truths have remained in the shadows about these men.

What's going on in Area 51? What crashed at Roswell? And what's happening at the top-secret Dugway Proving Ground? Experts go in search of answers.

Ony investigates anomalies including UFO footage from Sweden and a bizarre case of decapitated goats in Atlanta.

On the orders of Adolf Hitler, the Nazi invaders of Alderney utilised more than 5,000 slave labourers to build a series of protective fortifications.

The World War II killings carried out by the Nazis on Alderney represent the worst mass murder in British history - yet no one has been brought to justice.

Experts examine the megalithic complex of Gobekli Tepe, and ask if such an advanced structure could possibly have been built by humans alone.

Aliens And The Lost Ark: Experts on the extraterrestrial investigate the possibility of the religious relic being an alien artefact.

Is biological life merely a stepping stone for a universe dominated by alien artificial intelligence.

As humanity continues to search for alien life, experts give their analysis on how close we are to First Contact.

Stirling has long been one of the most strategically important castles in Britain. Dan Jones examines the rich and savage history of this stronghold.

Hugh and the team uncover a World War Two prisoner of war camp beneath a housing estate in Oldham. Glen Mill held over six thousand enemy prisoners.

The Founding Fathers established the pillars of freedom and democracy in the US, but what truths have remained in the shadows about these men.

What's going on in Area 51? What crashed at Roswell? And what's happening at the top-secret Dugway Proving Ground? Experts go in search of answers.

Ony investigates anomalies including UFO footage from Sweden and a bizarre case of decapitated goats in Atlanta.

On the orders of Adolf Hitler, the Nazi invaders of Alderney utilised more than 5,000 slave labourers to build a series of protective fortifications.

The World War II killings carried out by the Nazis on Alderney represent the worst mass murder in British history - yet no one has been brought to justice.

After Germany tries an all-out push to take Paris, America is forced to make hard decisions that will either break the Allies or turn the tide of war.

Experts examine the megalithic complex of Gobekli Tepe, and ask if such an advanced structure could possibly have been built by humans alone.

Aliens And The Lost Ark: Experts on the extraterrestrial investigate the possibility of the religious relic being an alien artefact.

Is biological life merely a stepping stone for a universe dominated by alien artificial intelligence.

As humanity continues to search for alien life, experts give their analysis on how close we are to First Contact.

Stirling has long been one of the most strategically important castles in Britain. Dan Jones examines the rich and savage history of this stronghold.

Hugh and the team uncover a World War Two prisoner of war camp beneath a housing estate in Oldham. Glen Mill held over six thousand enemy prisoners.

Is biological life merely a stepping stone for a universe dominated by alien artificial intelligence.

Allen and Ton find a signed Bob Shaw Swing-Gate tattoo machine in LA, as well as a competition chainsaw and a remarkable wooden bear.

Ton and Allen prove the early bird does catch the worm when a morning auction offers up a mixed martial arts fighting cage and a vintage carnival game.

It was a battle that lasted only five hours, but Britain's fight against Spain and Napoleon Bonaparte's France would go down in history.

The American frontier is full of legends of cowboys, Native Americans, and outlaws. But what about the tales of cursed mountains, monsters and even UFOs.

Experts investigate the US government's experiments into teleportation. They also dig into strange happenings at Mount Shasta and Skinwalker ranch.

Did a canoer film the legendary Skunk Ape walking in gator-infested waters.

In the early hours of 6 June 1944, Allied forces began the greatest military assault ever attempted. Here, the story of the liberation of Europe is revealed.

Allen and Ton take on an old foe at a container auction to get their hands on a mint 1800s pistol and a collection of 90s remote-controlled combat robots.

Researchers claim hidden messages can be found within the works of Leonardo da Vinci that may reveal an extraterrestrial influence.

Aliens And The Creation Of Man: Can unexplained advances in human evolution be attributed to alien architects? Alien theorists look at the evidence.

A team of experts investigate some of the most well-known UFO cases of the last 75 years, hoping to uncover the truth.

Dan visits one of Northern Ireland's oldest castles, Carrickfergus, to learn more about the tempestuous relationship between Britain and Ireland.

Hugh and the team solve a 17th-century mystery in King's Lynn as they hunt for defensive earthworks from the English Civil War.

The American frontier is full of legends of cowboys, Native Americans, and outlaws. But what about the tales of cursed mountains, monsters and even UFOs.

Experts investigate the US government's experiments into teleportation. They also dig into strange happenings at Mount Shasta and Skinwalker ranch.

Did a canoer film the legendary Skunk Ape walking in gator-infested waters.

In the early hours of 6 June 1944, Allied forces began the greatest military assault ever attempted. Here, the story of the liberation of Europe is revealed.

The New Frontier: With science closer than ever to proving that life once lived on Mars, is there a chance that something still exists there.

The US had to beat the Nazis in the race to create an atomic bomb, so they built many secret nuclear facilities. Here, the controversial sites are re-created.

Roman emperor Titus plans 100 days of games to commemorate the Colosseum's completion in 80 AD, including a fight to the death between Priscus and Verus.

Researchers claim hidden messages can be found within the works of Leonardo da Vinci that may reveal an extraterrestrial influence.

Aliens And The Creation Of Man: Can unexplained advances in human evolution be attributed to alien architects? Alien theorists look at the evidence.

A team of experts investigate some of the most well-known UFO cases of the last 75 years, hoping to uncover the truth.

Dan visits one of Northern Ireland's oldest castles, Carrickfergus, to learn more about the tempestuous relationship between Britain and Ireland.

Hugh and the team solve a 17th-century mystery in King's Lynn as they hunt for defensive earthworks from the English Civil War.

Allen and Ton take on an old foe at a container auction to get their hands on a mint 1800s pistol and a collection of 90s remote-controlled combat robots.

A desert auction in Palm Springs gives the guys a 70s sandrail dune racer and a 1965 replica Mustang pool table. But how much can they flog them for.

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.

Today, we tend to think that our scientific knowledge can help protect us from almost anything, including natural disasters. But is that really true.

Three places, three spooky stories. Experts examine weird sightings and unsolved disappearances at Bennington, Bermuda and Bridgewater triangles.

Did a filmmaker capture a mammoth crossing a Siberian river? Tony Harris examines clues to determine its validity.

The Battle of the Beaches: Retrace the 100 days of battle as the Allies liberated Normandy, broke through the German line and paved the way towards victory.

The Normandy Campaign: Retrace the 100 days of battle as the Allies liberated Normandy, broke through the German line and paved the way towards victory.

In 2017, a strange, cigar-shaped object enters the solar system, causing some astronomers to suggest that it could be an extraterrestrial craft.

Theorists speculate about the existence of black holes on Earth, which may explain strange disappearances and other inexplicable phenomena.

A team of experts investigate some of the most well-known UFO cases of the last 75 years, hoping to uncover the truth.

Part One: Uncover the turmoil of 12th-century Ireland, where Kings vie for supremacy and powerful people drive a rival into exile - who then seeks help from Henry II.

Hugh and the team go on the hunt for the Morda Workhouse in Oswestry, to find out what the conditions were really like for those who lived there.

Today, we tend to think that our scientific knowledge can help protect us from almost anything, including natural disasters. But is that really true.

Three places, three spooky stories. Experts examine weird sightings and unsolved disappearances at Bennington, Bermuda and Bridgewater triangles.

Did a filmmaker capture a mammoth crossing a Siberian river? Tony Harris examines clues to determine its validity.

The Battle of the Beaches: Retrace the 100 days of battle as the Allies liberated Normandy, broke through the German line and paved the way towards victory.

The Normandy Campaign: Retrace the 100 days of battle as the Allies liberated Normandy, broke through the German line and paved the way towards victory.

A half-bull, half-man, the Minotaur is one of mythology's terrifying monsters. It's a bizarre tale of bestiality and human sacrifice - but what is the real-life origin.

His epic battles with Grendel and his mother have made Beowulf the Viking world's most famous warrior. But could this mythological hero have been based on a real person.

In 2017, a strange, cigar-shaped object enters the solar system, causing some astronomers to suggest that it could be an extraterrestrial craft.

Theorists speculate about the existence of black holes on Earth, which may explain strange disappearances and other inexplicable phenomena.

A team of experts investigate some of the most well-known UFO cases of the last 75 years, hoping to uncover the truth.

Part One: Uncover the turmoil of 12th-century Ireland, where Kings vie for supremacy and powerful people drive a rival into exile - who then seeks help from Henry II.

Hugh and the team go on the hunt for the Morda Workhouse in Oswestry, to find out what the conditions were really like for those who lived there.

The guys stumble on a laser tag system used for military training and an angler's fighting chair from the 70s. But the latter is in dire need of a refurb.

In San Diego, the guys get thrown a 50s pitching machine. They also rescue a Jaws of Life tool from the 80s.

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.

All over the world, there are giant monoliths that our ancient ancestors carved out of solid rock. But what was the purpose of these huge stone monuments.

What did UFO chaser Captain Mantell see before he was killed? Plus, experts investigate a close encounter in Texas and a mysterious crash at Shag Harbour.

Did an Italian reconnaissance pilot capture genuine UFO photos in 1979.

During WWII, soldiers from the British Empire, Belgium and France tried to evacuate from the town of Dunkirk during a arduous battle with German forces. This film explores the story.

Marking the 75th anniversary of D-Day, a special documentary explores the world-changing event through the incredible images and recollections of veteran photographers.

Researchers study giant ancient drawings found etched into the desert floor, which may be a part of an ancient alien code.

Could Area 51's notoriety act as a cover up to much bigger, top-secret extraterrestrial experiments taking place at multiple locations.

A team of experts investigate some of the most well-known UFO cases of the last 75 years, hoping to uncover the truth.

Part Two: Follow the course of the invasion as Strongbow wins victory after victory, while Henry II arrives to take control of Ireland and grants land to settlers from Britain.

Hugh and the team search for a monastic grange known as Biggin Hall, which provided produce for the nearby monks at St Mary's Priory.

All over the world, there are giant monoliths that our ancient ancestors carved out of solid rock. But what was the purpose of these huge stone monuments.

What did UFO chaser Captain Mantell see before he was killed? Plus, experts investigate a close encounter in Texas and a mysterious crash at Shag Harbour.

Did an Italian reconnaissance pilot capture genuine UFO photos in 1979.

During WWII, soldiers from the British Empire, Belgium and France tried to evacuate from the town of Dunkirk during a arduous battle with German forces. This film explores the story.

Marking the 75th anniversary of D-Day, a special documentary explores the world-changing event through the incredible images and recollections of veteran photographers.

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

The things that once represented our favourite times of year meet their demise, from Christmas trees and roller coasters, to high-end resorts and cruise ships.

Researchers study giant ancient drawings found etched into the desert floor, which may be a part of an ancient alien code.

Could Area 51's notoriety act as a cover up to much bigger, top-secret extraterrestrial experiments taking place at multiple locations.

A team of experts investigate some of the most well-known UFO cases of the last 75 years, hoping to uncover the truth.

Part Two: Follow the course of the invasion as Strongbow wins victory after victory, while Henry II arrives to take control of Ireland and grants land to settlers from Britain.

Hugh and the team search for a monastic grange known as Biggin Hall, which provided produce for the nearby monks at St Mary's Priory.

Ton and Allen discover a 40s embalming pump and one of the first electric bone saws. They also find a shark cage, but is it safe to use.

A fellow buyer tests Ton and Allen's patience at a container auction in Ventura, where they discover parts of a hot air balloon and a 19th-century rifle.

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.

Throughout time, people have believed mountains were the home of the divine. But could these hilltop spirits have been extraterrestrials.

The Tesla Experiment. Giorgio A Tsoukalos draws on evidence from past series as he asks whether Nikola Tesla was communicating with extraterrestrials.

The Battle of the Beaches: Retrace the 100 days of battle as the Allies liberated Normandy, broke through the German line and paved the way towards victory.

The Normandy Campaign: Retrace the 100 days of battle as the Allies liberated Normandy, broke through the German line and paved the way towards victory.

Hidden In Plain Sight 1935-1938: 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.

Up in Flames 1936-1940: At the end of 1939, the German Army invades Poland. Examine how Hitler succeeded in pushing through his rearmament and war plans relatively unhindered.

Bloody Resolve: Series highlighting what life was really like on the frontlines during WWII. In Tarawa, mechanical failure leads to one of the bloodiest battles in the Pacific.

An elite force of Norwegian resistance fighters return to their invaded homeland to carry out a daring mission.

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.

The USS Enterprise is the only battle-ready American carrier in the Pacific. For her crew, the war has never been more personal when the Japanese attack.

The USS Enterprise became the first ship to receive the Presidential Unit Citation in WWII, following its mission during the bloody Gilbert invasion.

Hidden In Plain Sight 1935-1938: 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.

Up in Flames 1936-1940: At the end of 1939, the German Army invades Poland. Examine how Hitler succeeded in pushing through his rearmament and war plans relatively unhindered.

Infamy: By June 1941, Hitler controlled most of Europe, but the USSR resisted invasion. Then Pearl Harbor changed everything.

History's most acclaimed prophet, Nostradamus, saw the arrival of three Antichrists that would plague mankind. But who are they.

Did an Italian reconnaissance pilot capture genuine UFO photos in 1979.

The Royals and the Ripper: With evidence from historians, police officers and experts, discover whether Prince Albert Victor was really Jack the Ripper.

Throughout time, people have believed mountains were the home of the divine. But could these hilltop spirits have been extraterrestrials.

The Tesla Experiment. Giorgio A Tsoukalos draws on evidence from past series as he asks whether Nikola Tesla was communicating with extraterrestrials.

While the excavation continues, Peter and Elroy go back to their investigation to clear Olof's name. A Native American professor schools them on his tribe.

Journey back in time and explore the world of the mega-rich gourmands, who spent epic sums in pursuit of the rarest, most forbidden food and drink could buy.

Peer into the extraordinary world of the monarchs and millionaires who spent their fortunes collecting wild animals.

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.

An elite force of Norwegian resistance fighters return to their invaded homeland to carry out a daring mission.

Colditz Castle, The Great Escape and the bold Warburg Wire Job.

Experts investigate strange carvings from 8,000 BC and unexplained sightings in the New World. Is there more to the US's past than history books suggest.

Alien Power Plants: Giorgio Tsoukalos draws on evidence from past series as he asks whether aliens introduced the Greeks and Egyptians to electricity.

Allen and Ton take on an old foe at a container auction to get their hands on a mint 1800s pistol and a collection of 90s remote-controlled combat robots.

In the early hours of 6 June 1944, Allied forces began the greatest military assault ever attempted. Here, the story of the liberation of Europe is revealed.

In the early hours of 6 June 1944, Allied forces began the greatest military assault ever attempted. Here, the story of the liberation of Europe is revealed.

The Gates of Hell 1941-1942: In the shadow of the war, the Nazi regime gradually advances its "final solution to the Jewish problem", culminating in the Holocaust.

Genocide 1942-1944: Along with Treblinka and Majdanek, Sobibor was one of the camps used in Operation Reinhard, in which the Nazis murdered almost two million people.

Battle Stations: It's 1944 and the Allies are planning the invasion of France. For pilot Bert Stiles that means joining the decimated 8th Air Force to clear the Normandy skies.

On the outskirts of Bouerat Harbor in Libya, a small group of British special forces prepare to destroy a crucial German fuel depot.

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.

Follow the events of 1944, as the USS Enterprise and the Carrier Task Force push through the Pacific, hammering the enemy bases at Kwajalein and Truk Lagoon.

While the Allies storm France, American forces hit the Marianas Islands and the Enterprise supports one of the most deadly battles of the Pacific War.

The Gates of Hell 1941-1942: In the shadow of the war, the Nazi regime gradually advances its "final solution to the Jewish problem", culminating in the Holocaust.

Genocide 1942-1944: 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 Dream of Great Success: After the attack on Pearl Harbor, the Japanese army celebrated its victory. Four months later, the Battle of the Coral Sea shakes their confidence.

The things that once represented our favourite times of year meet their demise, from Christmas trees and roller coasters, to high-end resorts and cruise ships.

Italy and the UK: Visiting a village in Calabria, Ross discovers the true extent of the mafia's powers - before meeting the daughter of an Italian mob boss.

Roman emperor Titus plans 100 days of games to commemorate the Colosseum's completion in 80 AD, including a fight to the death between Priscus and Verus.

Experts investigate strange carvings from 8,000 BC and unexplained sightings in the New World. Is there more to the US's past than history books suggest.

Alien Power Plants: Giorgio Tsoukalos draws on evidence from past series as he asks whether aliens introduced the Greeks and Egyptians to electricity.

A team of archaeologists embark on a quest to unearth the most treasured and famous artefact in human history, rumoured to be buried beneath Jerusalem.

Attila and his violent tribe of nomad warriors known as the Huns.

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.

On the outskirts of Bouerat Harbor in Libya, a small group of British special forces prepare to destroy a crucial German fuel depot.

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

Ever wondered about bizarre things that fall from the sky? From meteorites to seafood, the stories are truly unbelievable.

Were Betty and Barney Hill really abducted by aliens? Experts investigate. They also explore the mystery of The Mothman, and Travis Walton's disappearance.

What's up with the recent trend in flying sphere sightings and should we be concerned.

Colditz Castle, The Great Escape and the bold Warburg Wire Job.

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

Following a 2017 public disclosure of secret government UFO investigations, are we any closer to proving there has been a UFO conspiracy.

A team of experts investigate some of the most well-known UFO cases of the last 75 years, hoping to uncover the truth.

Karl and Kevin explore how weapons and armour developed, starting with the 1645 Battle of Naseby during the English Civil War.

Hugh and the team search for the house of the head of the Elizabethan Secret Service, Sir Frances Walsingham, to find out what this spymaster used it for.

Ever wondered about bizarre things that fall from the sky? From meteorites to seafood, the stories are truly unbelievable.

Were Betty and Barney Hill really abducted by aliens? Experts investigate. They also explore the mystery of The Mothman, and Travis Walton's disappearance.

What's up with the recent trend in flying sphere sightings and should we be concerned.

Colditz Castle, The Great Escape and the bold Warburg Wire Job.

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

Death of the Old Rules: Follow the American Mafia from their early development in New York City neighbourhoods, discovering how public violence affected their operations.

Following a 2017 public disclosure of secret government UFO investigations, are we any closer to proving there has been a UFO conspiracy.

A team of experts investigate some of the most well-known UFO cases of the last 75 years, hoping to uncover the truth.

Karl and Kevin explore how weapons and armour developed, starting with the 1645 Battle of Naseby during the English Civil War.

Hugh and the team search for the house of the head of the Elizabethan Secret Service, Sir Frances Walsingham, to find out what this spymaster used it for.

Ton and Allen teach a cocky new auction hunter a lesson. Then, they get their hands on a hot rod made out of a World War II fighter plane.

The guys encounter aggressive outdoorsmen in the wilderness. Later they discover an amphibious ATV and a hammer that can drill through solid rock.

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.

Explore the Lake Michigan Triangle's mysteries, eerie doll islands, explosive gas lakes, virus-filled caves and haunted US locations.

A new and shocking theory could explain one of America's most famous unsolved crimes - the disappearance of aviator Charles Lindbergh's 20-month-old son.

The team will explore theories about this mysterious sighting, aiming to uncover the truth behind a possible UFO.

a German breakout, a US bomber crew's Soviet secret and the Trojan Horse of Stalag Luft III.

A Russian soldier's daring escape from a Nazi death camp, a bold plan from a Japanese prison and pilots winning their enemies' respect.

Ancient Astronaut theorist Giorgio A. Tsoukalos explores the latest evidence that suggests extraterrestrials visited Egypt in the distant past.

A team of experts investigate some of the most well-known UFO cases of the last 75 years, hoping to uncover the truth.

Exploring the impact of the Battle of Towton during the War of the Roses, Karl and Kevin continue their look at how weapons and body armour developed.

US YouTube sensation Beau Ouimette and presenter Rick Edwards visit a range of historically significant sites in search of incredible archaeological finds.

Explore the Lake Michigan Triangle's mysteries, eerie doll islands, explosive gas lakes, virus-filled caves and haunted US locations.

A new and shocking theory could explain one of America's most famous unsolved crimes - the disappearance of aviator Charles Lindbergh's 20-month-old son.

The team will explore theories about this mysterious sighting, aiming to uncover the truth behind a possible UFO.

a German breakout, a US bomber crew's Soviet secret and the Trojan Horse of Stalag Luft III.

A Russian soldier's daring escape from a Nazi death camp, a bold plan from a Japanese prison and pilots winning their enemies' respect.

The Templars: It's believed the Knights Templar owned vast swathes of land, commanded fleets, and lent money to kings. How do we separate the facts from the fiction.

John A. Kantara proves that lies have always been part of warfare, exploring the role of propaganda in spreading one's truth.

Ancient Astronaut theorist Giorgio A. Tsoukalos explores the latest evidence that suggests extraterrestrials visited Egypt in the distant past.

A team of experts investigate some of the most well-known UFO cases of the last 75 years, hoping to uncover the truth.

Exploring the impact of the Battle of Towton during the War of the Roses, Karl and Kevin continue their look at how weapons and body armour developed.

US YouTube sensation Beau Ouimette and presenter Rick Edwards visit a range of historically significant sites in search of incredible archaeological finds.

Ton and Allen go north to Alaska and find two enormous seaplane pontoons and a pair of Smith & Wesson revolvers.

Ton and Allen get a surprise second chance and uncover a 1960s motorised railroad maintenance car and a pre-WWI Japanese semi-automatic pistol.

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.

Have you heard about the warrior bear who helped the allies win WWII? Explore the unbelievable stories of the planet's most fantastic beings.

In 1955, a family of seven in Kentucky fired their guns on an alleged alien attack. But what did they really see.

Investigate videos, photos and audio of UFOs and conspiracies, using experts to separate hoaxes from credible evidence.

Discover the German submarines that caused havoc in the American desert, the playboy pilot they couldn't cage and the young lovers whose escape defied all odds.

Discover Hitler's last soldier in America who defied the FBI for 40 years, the prisoners who revealed the secrets of the death camps and the merciless Nazi who almost got away.

Are intelligent robots the next step in human evolution? As man and machine begin to merge, are we fulfilling a destiny prepared for us by aliens.

A team of experts investigate some of the most well-known UFO cases of the last 75 years, hoping to uncover the truth.

Exploring the impact of the Battle of Hastings in 1066, Karl and Kevin continue their look at how weapons and body armour developed.

Presenter Rick Edwards and US YouTube sensation and river detectorist Beau Ouimette travel to Warwick on the hunt for incredible archaeological finds.

Have you heard about the warrior bear who helped the allies win WWII? Explore the unbelievable stories of the planet's most fantastic beings.

In 1955, a family of seven in Kentucky fired their guns on an alleged alien attack. But what did they really see.

Investigate videos, photos and audio of UFOs and conspiracies, using experts to separate hoaxes from credible evidence.

Discover the German submarines that caused havoc in the American desert, the playboy pilot they couldn't cage and the young lovers whose escape defied all odds.

Discover Hitler's last soldier in America who defied the FBI for 40 years, the prisoners who revealed the secrets of the death camps and the merciless Nazi who almost got away.

Legend has it that this ancient civilisation was wiped out by a volcanic eruption, but could the discovery of spectacular palaces in Crete and Santorini challenge the theory.

Emperor Domitian tasks master builder Haterius with constructing a labyrinth underneath the Colosseum floor.