A hoard of golden coins was found in the prospecting district of California. Where did they come from and why did the owners never claim them.

What is the Voynich Manuscript, and what secrets does the mysterious 500-year-old document hold.

Mike enlists his buddy Dave to help him rid the Field of Dreams of a junk-stuffed school bus.

Studies show 70% of UFO sightings occur in 'hotspots', where unusual phenomena is regularly reported. Is there something about these places that attracts visitors.

More than 10,000 crop circle formations have been documented and many display properties that defy explanation. Could they be of otherworldly origin.

The troubled beginnings and amazing exploits of the legendary British heavy bomber. Plus, see a replica up close.

The Luftwaffe's Frontline Fighter: The astonishing story of the 109 and its modified variants, best known for its role in the Battle of Britain.

Alice Roberts and Matt Williams visit the Dorset Country Museum, where they explore finds from archaeological digs across the west of Britain.

Alice Roberts and Matt Williams visit sites in the west of Britain, including one uncovering the rituals of Stonehenge.

Andy tracks down the site of the original Stonehenge, meets a childhood witness of Wales' most famous UFO incident and takes part in a comedic hunt for the Welsh Wildman.

Andy receives military training at a Civil War re-enactment, before embarking on a ghostly hunt and meeting the man who captured leopard DNA from a sheep kill.

Studies show 70% of UFO sightings occur in 'hotspots', where unusual phenomena is regularly reported. Is there something about these places that attracts visitors.

More than 10,000 crop circle formations have been documented and many display properties that defy explanation. Could they be of otherworldly origin.

Armed with evidence from Odette, Vera intensifies her search at Karlsruhe prison and Ravensbruck, facing hurdles to uncover crucial results in Germany.

Himmler's belief in the theory that the Himalayas were home to the Nazis' Aryan ancestors leads to an SS mission to the mountains.

December 1941: Under cover of a fierce naval bombardment, a taskforce of elite British commandos sail towards the Norwegian town of South Vaagso.

Enter JRR Tolkien's fantastical world of hobbits, orcs and wizards, and uncover the real-life influences that shaped his epic fantasy books.

Idolised in Norse mythology, Thor protects the planet from evil threats. And today, new discoveries are helping us to uncover the hidden truth behind the legend.

In June 1944, the Allied armada launches an assault on the Normandy coast, with soldiers charging in successive waves on a successful and historic day.

In the waning days of the war in Europe, the Soviets march into Germany. The Nazis take their final stand as they defend the capital of the Third Reich - Berlin.

Studies show 70% of UFO sightings occur in 'hotspots', where unusual phenomena is regularly reported. Is there something about these places that attracts visitors.

More than 10,000 crop circle formations have been documented and many display properties that defy explanation. Could they be of otherworldly origin.

When millions over the world vanish, a biblical prophecy known as the Rapture will be fulfilled. Are there signs of the prediction actually happening.

Sir Isaac Newton is considered one of history's great geniuses, but did you know he also predicted the date of the apocalypse.

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.

Examine claims Nostradamus predicted Hitler. Plus, learn about the canary resuscitator and a tiny object with the power to kill.

Uncover the secrets of the Holy Sepulchre, the sacred Christian site built in the same spot as the death and resurrection of Jesus.

The discovery of the ancient Karahan Tepe megalithic site, displaying perplexing engineering skills, turns the archaeology world on its head.

Scholars identify Egypt's obelisks as monuments to the pharaohs, while ancient astronaut theorists suggest they may power communication with the gods.

A look at the later, clipped wing version flown by Czech refugee pilots in the UK during World War II. Plus, a tour of a restored example.

Superfortress: The story of the prolonged development and the initially troubled operational history of the Boeing B29 Superfortress.

Alice Roberts and Matt Williams visit the Neolithic Orkney World Heritage Site, where they explore finds from archaeological digs across the north of Britain.

Alice Roberts and Matt Williams present more outstanding archaeology. The team unearths a mass grave and search the Thames for clues to a 17th century tragedy.

In the north of Britain, a team discovers clues to Scotland's first kingdoms and metal detectorists unearth a Viking treasure hoard.

Andy makes a startling discovery at the site of the Rendlesham UFO incident, before sending psychic Simi to investigate one of Britain's most haunted inns.

The discovery of the ancient Karahan Tepe megalithic site, displaying perplexing engineering skills, turns the archaeology world on its head.

Scholars identify Egypt's obelisks as monuments to the pharaohs, while ancient astronaut theorists suggest they may power communication with the gods.

What would happen if all humans vanished? Would LA's palm trees spark a huge inferno? What would become of New York? And which animals would take control from man.

If people disappeared from Earth, what would happen to metallic objects? Would bridges and buildings collapse? And what would become of the US's secret stash of gold.

In a world void of people, pythons begin to challenge alligators for control of the Everglades. Elsewhere, Shanghai sinks under the weight of its empty skyscrapers.

Across every profession and industry, icons exist in various forms and have done throughout history, from the Albert Einstein to the Jumbo Jet and the Sydney Opera House.

In Malta lies an underground complex dating back over 5,000 years, containing the remains of 7,000 humans. But who do the bizarre skulls belong to.

Fall of France: The world had largely ignored the growing threat of Nazism during the late 1930s and now the appeasement of Hitler was about to have terrible consequences.

Battle of Britain: This is the story of that battle, during which a handful of young pilots faced and eventually defeated the might of Goering's bombers.

The discovery of the ancient Karahan Tepe megalithic site, displaying perplexing engineering skills, turns the archaeology world on its head.

Scholars identify Egypt's obelisks as monuments to the pharaohs, while ancient astronaut theorists suggest they may power communication with the gods.

Check out a mythical sculpture unearthed by an Indian tsunami, a 12th-century temple in quake-prone Mexico and a sunken ship in Utah's Great Salt Lake.

Explore evidence that ties a meteor strike to a Biblical tale. Delve into a treasure-filled tunnel revealed by a sinkhole in Mexico.

Ireland: Craig and Sarah take a look at a case from November 2018 off the coast of Ireland, in which pilots saw bizarre lights through their cockpit windows.

From the Cold War to the TV set, experts question whether the government is actively controlling what you think, how you act and what you believe.

Experts question if there really is an elite group of powerbrokers trying to rule the planet. And if so, who is behind this New World Order.

Ian leaves behind his wild ways and embraces a more conservative lifestyle.

Could the Founding Fathers have hidden secrets about ancient aliens in their documents, buildings and symbols? Experts investigate.

Theorists ask whether a currently unidentified species represented in our DNA could be a result of breeding between humans and aliens in the remote past.

Atlantis, the legendary continent that sank. As the Nazis rose to power, Himmler and the SS were convinced Atlantis existed. Season premiere.

Two iconic machines of World War II - the Spitfire symbolised British hope and resistance, while the Tiger tank embodied German power.

The Wooden Wonder: The fascinating story behind the stunning wooden aircraft, which undertook some of the most daring and iconic raids of WWII.

Could the Founding Fathers have hidden secrets about ancient aliens in their documents, buildings and symbols? Experts investigate.

Theorists ask whether a currently unidentified species represented in our DNA could be a result of breeding between humans and aliens in the remote past.

Do the doorways recently discovered on the surface of Mars lead to an existential lesson for our species.

According to physics, time travel is possible - so could these unidentified phenomena actually be us from the future.

Andy heads to the home of palaeontology on the Jurassic Coast and braves the collapsing cliffs of Lyme Regis to bring back one of its many fossils.

Dr Alice Roberts explores finds from the west of Britain, including the lost World War I training trenches on Salisbury Plain.

Using drones and satellite imagery, discover a vanished Neolithic structure in an Irish field, an oasis in a Chinese desert and buried treasure in the UK.

Check out mind-reading plants, pagan human sacrifice and Californian time travellers.

Did a fisherman capture footage of a giant sea serpent? What were the lights that appeared above Texas in 1951.

Two iconic machines of World War II - the Spitfire symbolised British hope and resistance, while the Tiger tank embodied German power.

The Wooden Wonder: The fascinating story behind the stunning wooden aircraft, which undertook some of the most daring and iconic raids of WWII.

Scotty Moore travels to the northern coast of Peru, where archaeologists have discovered a teenage girl buried in a strange place just outside an empty tomb.

Experts reveal the highly encrypted phones that criminal gangs use to stay under the radar, and explain how the police are turning the phones against the crooks.

Could the Founding Fathers have hidden secrets about ancient aliens in their documents, buildings and symbols? Experts investigate.

Theorists ask whether a currently unidentified species represented in our DNA could be a result of breeding between humans and aliens in the remote past.

Do the doorways recently discovered on the surface of Mars lead to an existential lesson for our species.

According to physics, time travel is possible - so could these unidentified phenomena actually be us from the future.

Andy heads to the home of palaeontology on the Jurassic Coast and braves the collapsing cliffs of Lyme Regis to bring back one of its many fossils.

Dr Alice Roberts explores finds from the west of Britain, including the lost World War I training trenches on Salisbury Plain.

Using drones and satellite imagery, discover a vanished Neolithic structure in an Irish field, an oasis in a Chinese desert and buried treasure in the UK.

Mike takes on a rare Hertz Shelby Mustang for his friend's brother, but the badly damaged car might be too far-gone.

Experts investigate the mysterious Creation of Man, asking whether unexplained advances in human evolution could have been down to aliens.

Experts question whether ancient myths provide evidence that reptillian aliens are more than just pop-culture creations and staples of science-fiction.

In Nazi Germany, questions about witchcraft attracted SS leaders. Himmler, dedicated to an Aryan super race, established a team to research witchcraft.

The Vietnam war changed aerial warfare in more ways than one. The Phantom became the first true fighter bomber of the modern era.

The F15 Eagle immediately turned the tide of the first Gulf War to prove its greatness.

Experts investigate the mysterious Creation of Man, asking whether unexplained advances in human evolution could have been down to aliens.

Experts question whether ancient myths provide evidence that reptillian aliens are more than just pop-culture creations and staples of science-fiction.

Certain structures on our planet have stood the test of time and continue to astonish mankind - so much so, that alien intervention has not been ruled out.

In 2023, David Grusch - a former US Intelligence Officer - testified to a US government committee that there are alien spacecrafts at secret facilities.

Andy visits Britain's oldest shop, drinks coffee with a corpse and discovers a 19th-century time machine hidden in an urban cemetery.

Dr Alice Roberts uncovers some incredible finds from North Britain, including Scottish man-made islands that help paint a picture of Stone Age tech.

Discover an array of mysterious phenomena seen from above, including a Nazi weapon in Northern France and a Russian military tower near Chernobyl.

A man survives six lightning strikes, while a toddler is frozen solid and thawed unharmed.

In this special, Tony Harris reviews the latest developments and most compelling photographic evidence from a tumultuous year of UFO revelations.

The Vietnam war changed aerial warfare in more ways than one. The Phantom became the first true fighter bomber of the modern era.

The F15 Eagle immediately turned the tide of the first Gulf War to prove its greatness.

The MOVE organisation rose up in 1970s Philadelphia. A unique blend of black power and flower power, their fight against police oppression escalated over time.

Treacherous Traps: Examine a variety of diabolical booby traps used to ensnare treasure hunters, outwit body snatchers or gravely harm wartime enemies.

Experts investigate the mysterious Creation of Man, asking whether unexplained advances in human evolution could have been down to aliens.

Experts question whether ancient myths provide evidence that reptillian aliens are more than just pop-culture creations and staples of science-fiction.

Certain structures on our planet have stood the test of time and continue to astonish mankind - so much so, that alien intervention has not been ruled out.

In 2023, David Grusch - a former US Intelligence Officer - testified to a US government committee that there are alien spacecrafts at secret facilities.

Andy visits Britain's oldest shop, drinks coffee with a corpse and discovers a 19th-century time machine hidden in an urban cemetery.

Dr Alice Roberts uncovers some incredible finds from North Britain, including Scottish man-made islands that help paint a picture of Stone Age tech.

Discover an array of mysterious phenomena seen from above, including a Nazi weapon in Northern France and a Russian military tower near Chernobyl.

JF begins restoring a 1928 Model A Roadster, while Avery takes on a 1941 military vehicle, and these antique machines are full of unique challenges.

A look at cases where people have claimed strange voices urged them to commit horrific deeds. Could they have been obeying the orders of aliens.

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

As the Third Reich rises to power, Himmler fixates on the Holy Grail as his and the Nazis' desperation to capture this ancient relic intensifies.

Icons of the Royal Navy in different eras, the Belfast and the Harrier have earned their place in history for different reasons.

The mighty Flying Fortress takes to the air as we examine the background and development of one of WWII's most iconic bombers.

A look at cases where people have claimed strange voices urged them to commit horrific deeds. Could they have been obeying the orders of aliens.

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

Some places are known for so many reports of UAP sightings that people flock from all around the world, just to catch a glimpse of a flying saucer.

UAPs have been seen entering the ocean at high speeds - and since our oceans can be as deep as six miles, were the UAPs simply trying to get home.

Dawn of the Celts: A journey to some of the mysteries of how the early Celts emerged and expanded, from collapsed salt mines, to bizarre rituals and lost cities.

In the East of Britain, Dr Alice Roberts finds new revelations from 'Britain's Pompeii' and the theatre where Shakespeare premiered Romeo and Juliet.

Discover over a hundred massive concrete arrows scattered across America, a mysterious hole in the middle of a lake in Southern California and more.

Cows align with the Earth magnetic fields, and a young makes an incredible connection.

Are reports of a strange swirling vortex with a brilliant white center in the skies proof of a genuine UFO.

Icons of the Royal Navy in different eras, the Belfast and the Harrier have earned their place in history for different reasons.

The mighty Flying Fortress takes to the air as we examine the background and development of one of WWII's most iconic bombers.

Uncover the story of the SS Atlantic's deadly 1873 crash through intriguing stories and 3D recreations of the wreck.

The Barbarian General: Violence erupts as the Romans and Barbarians try to co-exist in the empire. The Goths rebel under the leadership of Alaric, a man they call king.

A look at cases where people have claimed strange voices urged them to commit horrific deeds. Could they have been obeying the orders of aliens.

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

Some places are known for so many reports of UAP sightings that people flock from all around the world, just to catch a glimpse of a flying saucer.

UAPs have been seen entering the ocean at high speeds - and since our oceans can be as deep as six miles, were the UAPs simply trying to get home.

Dawn of the Celts: A journey to some of the mysteries of how the early Celts emerged and expanded, from collapsed salt mines, to bizarre rituals and lost cities.

In the East of Britain, Dr Alice Roberts finds new revelations from 'Britain's Pompeii' and the theatre where Shakespeare premiered Romeo and Juliet.

Discover over a hundred massive concrete arrows scattered across America, a mysterious hole in the middle of a lake in Southern California and more.

Mike and Avery try to get an auctioneer to help them downsize their collections but Avery scares him off.

Experts scrutinise prehistoric ruins, asking whether humans could have built these advanced structures alone. Might they have had alien help.

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

Himmler's belief in the theory that the Himalayas were home to the Nazis' Aryan ancestors leads to an SS mission to the mountains.

Two of the most produced combat machines in World War II managed to stay relevant until the end of the war through constant modernization and new variants.

The mighty North American twin delivered the first blow in the fight back against Japan, in one of the most daring and audacious raids of all time.

Experts scrutinise prehistoric ruins, asking whether humans could have built these advanced structures alone. Might they have had alien help.

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

As the Fermi Paradox states, the likelihood of advanced life in the universe is surprisingly high - so why haven't we had any contact with extraterrestrial life.

Physical evidence of alien activity has been hidden from the public for years - but it is starting to be revealed.

The Art and War: After thriving for three centuries, the Celts turned from traders into proven warriors, weapon masters and metal artists in a time that became their golden age.

Dr Alice Roberts explores the most exciting finds from West Britain. Iron Age gold in Britain is unearthed and a Viking camp is discovered.

A Turkish drought reveals a long-lost Basilica and its secrets, while the hull of a ship in the North Sea answers decades-old questions.

Check out a heart patient's unbelievable transformation, circles of ice in rivers and a shocking DNA test.

What causes the thunderous banging noises that wake Thessaloniki residents every night.

Two of the most produced combat machines in World War II managed to stay relevant until the end of the war through constant modernization and new variants.

The mighty North American twin delivered the first blow in the fight back against Japan, in one of the most daring and audacious raids of all time.

Terror of the World: The story of a deadly war that intertwines Germany, Poland, Japan, Italy and Spain, and the remorseless development of weapons and bombers.

A look at the women who surrounded Hitler after he came to power and how they were held up as an Aryan ideal for German society to strive for.

Experts scrutinise prehistoric ruins, asking whether humans could have built these advanced structures alone. Might they have had alien help.

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

As the Fermi Paradox states, the likelihood of advanced life in the universe is surprisingly high - so why haven't we had any contact with extraterrestrial life.

Physical evidence of alien activity has been hidden from the public for years - but it is starting to be revealed.

The Art and War: After thriving for three centuries, the Celts turned from traders into proven warriors, weapon masters and metal artists in a time that became their golden age.

Dr Alice Roberts explores the most exciting finds from West Britain. Iron Age gold in Britain is unearthed and a Viking camp is discovered.

A Turkish drought reveals a long-lost Basilica and its secrets, while the hull of a ship in the North Sea answers decades-old questions.

A crew of car lovers at a garage in the Rocky Mountains transforms abandoned heaps of rust into collectible classics.

Ancient alien theorists explore the origins of mythical gods. Could these tales of superhuman beings be based on sightings of extraterrestrials.

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

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

The Soviet Union produced a large variety of tanks and airplanes during World War II. What made the T34 and the Chaika stand out and become icons.

The Liberator proved its worth in WWII over Europe and the Pacific, modeled after the B-17, delivering blows to the Axis.

Ancient alien theorists explore the origins of mythical gods. Could these tales of superhuman beings be based on sightings of extraterrestrials.

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

It is likely that aliens exist in a universe as large as ours. How would they navigate those vast distances and potentially visit us on earth.

Close encounters come in many different forms, from sightings to abductions. Meet the real people who have experienced alien life up close.

Skyfall: Exploring why the Celts moved from prosperous cities into smaller fortified settlements and how this triggered their decline in Central Europe.

Dr Alice Roberts explores the biggest collection of Roman writing tablets. A fort scattered with human skulls provides evidence of Caesar's invasion.

Nubian pyramids reveal the rise of female power in Ancient Kush, while satellite images uncover secrets of an ancient Puebloan site in New Mexico.

A look at the future of mind control, a extinct hobbit race and whether humans can regenerate our limbs.

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

The Soviet Union produced a large variety of tanks and airplanes during World War II. What made the T34 and the Chaika stand out and become icons.

The Liberator proved its worth in WWII over Europe and the Pacific, modeled after the B-17, delivering blows to the Axis.

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

In the Bible, both the Ark of the Covenant and Noah's Ark are built to protect, each designed by God himself - before they were lost to history.

Ancient alien theorists explore the origins of mythical gods. Could these tales of superhuman beings be based on sightings of extraterrestrials.

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

It is likely that aliens exist in a universe as large as ours. How would they navigate those vast distances and potentially visit us on earth.

Close encounters come in many different forms, from sightings to abductions. Meet the real people who have experienced alien life up close.

Skyfall: Exploring why the Celts moved from prosperous cities into smaller fortified settlements and how this triggered their decline in Central Europe.

Dr Alice Roberts explores the biggest collection of Roman writing tablets. A fort scattered with human skulls provides evidence of Caesar's invasion.

Nubian pyramids reveal the rise of female power in Ancient Kush, while satellite images uncover secrets of an ancient Puebloan site in New Mexico.

A real Diamond T truck build has Mike and his crew scrambling to keep up with their client demands.

The Mutual UFO Network is devoted to the scientific investigation of UFOs. With more than five decades of investigations, MUFON's database could contain proof.

Meteor impacts have created the perfect environment for humankind. Could new evidence reveal that celestial objects have been sent by an alien intelligence.

The Wooden Wonder: The fascinating story behind the stunning wooden aircraft, which undertook some of the most daring and iconic raids of WWII.

The mighty Flying Fortress takes to the air as we examine the background and development of one of WWII's most iconic bombers.

Dr Alice Roberts explores the most exciting finds from West Britain. Iron Age gold in Britain is unearthed and a Viking camp is discovered.

Dr Alice Roberts uncovers some incredible finds from North Britain, including Scottish man-made islands that help paint a picture of Stone Age tech.

Andy heads to the home of palaeontology on the Jurassic Coast and braves the collapsing cliffs of Lyme Regis to bring back one of its many fossils.

Andy visits Britain's oldest shop, drinks coffee with a corpse and discovers a 19th-century time machine hidden in an urban cemetery.

The Mutual UFO Network is devoted to the scientific investigation of UFOs. With more than five decades of investigations, MUFON's database could contain proof.

Meteor impacts have created the perfect environment for humankind. Could new evidence reveal that celestial objects have been sent by an alien intelligence.

Vera finds out her agents' fate. Her beliefs about Noor are challenged. Suspicions lead Vera to hunt down a Nazi mastermind.

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

Hours before the D-Day landing, a small group of American paratroopers were dropped behind enemy lines with a vital mission.

Journey back to 885, when a small army in Paris repelled the Vikings, who had ravaged everything in their path while travelling up the Seine.

Examine how the strategy of encirclement devised by Hannibal left 50,000 Romans dead on the battlefield of Apulia on August 2, 216 BC.

The Seeds of Violence 1918-1922: In the wake of the First World War, Adolf Hitler identifies Benito Mussolini as his model and has one ultimate goal: to gain power in Germany.

Deceit and Delusion 1923-1928: Hitler appears to be eliminated after his failed putsch in 1923. Discover how the Nazi movement used democracy's tolerance in Germany to come back.

The Mutual UFO Network is devoted to the scientific investigation of UFOs. With more than five decades of investigations, MUFON's database could contain proof.

Meteor impacts have created the perfect environment for humankind. Could new evidence reveal that celestial objects have been sent by an alien intelligence.

Revelation is the most terrifying book in the Bible, describing mankind's final days. But who will survive God's wrath? And when will it happen.

In 1994, a secret manuscript hidden in the Vatican revealed a previously unknown apocalyptic prophecy accredited to Nostradamus. Where did it come from.

Armageddon 1943-1945: 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.

Examine an ancient pyramid toolkit, a device that unleashes lethal X-rays and a divisive terracotta sculpture.

One of the world's most popular cathedrals, Notre Dame suffered a devastating fire in 2019 - but how is it surviving today.

Explore whether contact with extraterrestrial life could have occurred. If so, has this happened in the highest levels of the US government.

The vast Alaskan wilderness is known for disappearances, stories of strange creatures and UFO sightings. Could this be due to an otherworldly presence.

The F15 Eagle immediately turned the tide of the first Gulf War to prove its greatness.

The mighty North American twin delivered the first blow in the fight back against Japan, in one of the most daring and audacious raids of all time.

Dr Alice Roberts explores the biggest collection of Roman writing tablets. A fort scattered with human skulls provides evidence of Caesar's invasion.

In the East of Britain, Dr Alice Roberts finds new revelations from 'Britain's Pompeii' and the theatre where Shakespeare premiered Romeo and Juliet.

Dr Alice Roberts explores finds from the west of Britain, including the lost World War I training trenches on Salisbury Plain.

Discover over a hundred massive concrete arrows scattered across America, a mysterious hole in the middle of a lake in Southern California and more.

Explore whether contact with extraterrestrial life could have occurred. If so, has this happened in the highest levels of the US government.

The vast Alaskan wilderness is known for disappearances, stories of strange creatures and UFO sightings. Could this be due to an otherworldly presence.

Discover what would happen to priceless artefacts such as the Mona Lisa, the Declaration of Independence and the Liberty Bell if humans were no longer around.

With no humans around, discover the fate of Las Vegas and Atlantic City, where the ocean would tear apart casinos and a new rat pack would take over.

Discover the fate of mankind's machinery of war in a world with no people, in which Pearl Harbor comes under renewed attacks, and snow causes urban avalanches.

Explore a collection of figures and groups who have redefined the notion of fame through history, from royal families across the globe to Marilyn Monroe and The Beatles.

The Real Evidence: Delve into the new theories that shed light - or cast doubt - on the Crucifixion. Is there any real archaeological evidence.

U-Boat Terror: With the invasion of Britain officially postponed, the Germans looked for another way to knock Britain out of the war.

Pearl Harbour: In 1941, Japan, the Axis ally of Germany and Italy, attacked the US naval base at Pearl Harbour, Hawaii, with no warning and no declaration of war.

Explore whether contact with extraterrestrial life could have occurred. If so, has this happened in the highest levels of the US government.

The vast Alaskan wilderness is known for disappearances, stories of strange creatures and UFO sightings. Could this be due to an otherworldly presence.

Revisit a medieval shipwreck that could reshape history. Explore a Greek version of Atlantis that sank in a tsunami.

Unravel clues to Maya political intrigue in Guatemala and see why footprints found post-storm are changing English migration history.

Pentagon: Craig and Sarah take on the US Navy's Unidentified Aerial Phenomenon videos: the 'Tic-Tac' footage, filmed from the USS Nimitz in 2004.

Could the once seemingly far-fetched idea of the undead roaming the planet be closer to happening then we ever thought possible? Are zombies becoming a reality.

Are governments around the world using weather control to incite the next World War and possibly destroy the planet? A team of experts investigate.

In this episode, Ian works on a movie car build.

Theorists offer compelling evidence suggesting that the ancient monolith thought to depict Egyptian pharaoh Khafra once represented an alien being.

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.

During his time in charge, Himmler made the study of runes - letters of ancient Germanic writing - obligatory for SS officers in the belief they held powers.

The Messerschmitt 262 was the brainchild of genius designer Willy Messerschmitt and it became the first combat jet in history.

The many variants of this single piston engine fighter bomber helped dominate the air to ground attack role in Vietnam, earning quite a reputation.

Theorists offer compelling evidence suggesting that the ancient monolith thought to depict Egyptian pharaoh Khafra once represented an alien being.

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.

Dr Alice Roberts joins a team of archaeologists as they attempt to restage a Roman cavalry tournament.

Dr Alice Roberts reveals the forgotten story of the Roman Army's cavalry as she journeys across Hadrian's Wall.

The team search for remains of the crashed WWII Spitfire and discover parts of the cockpit.

Alice Roberts shares archaeological discoveries from the west of the UK, including a Roman bath house and a German camp.

Finds from the East include a monument as old as Stonehenge and some disturbing Roman burials.

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

The Messerschmitt 262 was the brainchild of genius designer Willy Messerschmitt and it became the first combat jet in history.

The many variants of this single piston engine fighter bomber helped dominate the air to ground attack role in Vietnam, earning quite a reputation.

Archaeologists discover Roman cemeteries, including a grave with a beheaded and stabbed man, leading to an investigation by Tori and her team into who committed the act and why.

Decoding a lost civilization reveals the monumental challenge undertaken by some of the academic world's most brilliant minds.