Discover strange markings in the remote region of Northern Finland and reveal secrets found deep in the Antarctic.

A filthy 1981 Camaro Z28 needs a major transformation to get it back on the road and a 1972 Ford Maverick with sentimental value must be revitalised.

A minivan bursting at the seams with melted crayons, hay and trash has to be scrubbed, decontaminated and sanitised to be returned to its former glory.

Could Earth's deepest caves hide secret conduits to other worlds? Or harbour evidence that aliens once visited our planet? Experts investigate.

Experts investigate ancient tales and accounts of robots. If these sophisticated machines did exist in bygone days, what might have happened to them.

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

The F-16 and MiG-29, born rivals of the skies, embody opposing design ideals: US tech-driven agility versus Soviet rugged aerodynamics.

The definitive combat helicopter debuted in Southeast Asia, serving as transport, gunship, smoke ship, command center, MediVac and many other roles.

Could Earth's deepest caves hide secret conduits to other worlds? Or harbour evidence that aliens once visited our planet? Experts investigate.

Experts investigate ancient tales and accounts of robots. If these sophisticated machines did exist in bygone days, what might have happened to them.

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

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

It's July 10, 1943 and the Allied Forces have evicted the Axis Powers from North Africa and can finally begin the Italian Campaign.

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

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

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

The F-16 and MiG-29, born rivals of the skies, embody opposing design ideals: US tech-driven agility versus Soviet rugged aerodynamics.

The definitive combat helicopter debuted in Southeast Asia, serving as transport, gunship, smoke ship, command center, MediVac and many other roles.

Randy and Vicki Weaver were involved in an 11-day siege after retreating to the mountainside of Ruby Ridge. Re-examine the deadly 1992 standoff which left two dead.

Pain and Punishment: Witness the twisted origin stories of some of history's most diabolically creative and brutal torture devices, from the Iron Maiden to the Pear of Anguish.

Could Earth's deepest caves hide secret conduits to other worlds? Or harbour evidence that aliens once visited our planet? Experts investigate.

Experts investigate ancient tales and accounts of robots. If these sophisticated machines did exist in bygone days, what might have happened to them.

Annually, Illinois gets more than 300 UFO reports, so why are the Tinley Park sightings - with over 70 witnesses each year - the only reports that happen en masse.

Suez: Ross hops to Plymouth and explores a coastline littered with treasures. A bout of hypercapnia leaves Ross shaken after exploring a shipwreck.

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

Drones reveal what is left of Henry Ford's suburb in the Amazon, while clues to what killed a once-vibrant Pennsylvania mining town is discovered.

A waterlogged Jeep Cherokee requires a major rescue after years of neglect and a snake-infested Plymouth Duster needs a new lease of life.

A Packard filled with dead rodents must be given a makeover to make a profit. A neglected 1989 Porsche Carrera covered in grime needs to be handled with care.

Are we being watched by otherworldly beings? Experts make surprising discoveries as they explore the ancient past for evidence of alien overseers.

Experts investigate whether the stories of a time when gods and otherworldly beings inhabited the planet are more than mere mythology.

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

The Leopard 2 is probably the best all-around Main Battle Tank today, combining great mobility, a superior gun and excellent protection.

Explore classic and underrated aircraft, from WWII fighters to the Screaming Eagles F4, showcasing aviation's evolving history.

Are we being watched by otherworldly beings? Experts make surprising discoveries as they explore the ancient past for evidence of alien overseers.

Experts investigate whether the stories of a time when gods and otherworldly beings inhabited the planet are more than mere mythology.

Beyond Nazca: Giorgio Tsoukalos draws on evidence from past series as he takes an in-depth look at the mystery of Southern Peru's Nasca Lines.

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

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

The Mystery of Puma Punku. Experts in the extra-terrestrial examine the Inca ruin and its mysteriously intricate carved blocks.

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

The Leopard 2 is probably the best all-around Main Battle Tank today, combining great mobility, a superior gun and excellent protection.

Explore classic and underrated aircraft, from WWII fighters to the Screaming Eagles F4, showcasing aviation's evolving history.

With 3D recreations of the wreck, discover the story of the ship said to have sailed ablaze within the Northumberland Strait.

The Puppet Master: With Roman rulers now at the mercy of the barbarians, three Roman generals compete to become emperor - but one's savage strategy comes out on top.

Are we being watched by otherworldly beings? Experts make surprising discoveries as they explore the ancient past for evidence of alien overseers.

Experts investigate whether the stories of a time when gods and otherworldly beings inhabited the planet are more than mere mythology.

A powerful earthquake in 2018 seemed to lead to an increase in UFO sightings in Alaska - but why? Do the extra terrestrials have something to protect here.

Nazi Menace: The quest continues in the Red Sea, a deeply personal journey given Ross' grandfather fought in the North Africa campaign during WWII.

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

Look down over a constant inferno in Turkmenistan, mysterious circles in the Namibian desert and secret electric blue ponds in Utah.

A crusty old Pontiac Silver Streak must be taken from rags to riches, while an extremely rare but rusted Chrysler 300 Hurst needs an extensive polish and shine.

A forgotten Rolls-Royce gets the royal treatment and becomes a rolling beauty once more, while a Ford pickup is resurrected after being hidden in a barn.

History's greatest geniuses have often said their ideas came from visions or hallucinations. But could they have come from aliens? Experts investigate.

Experts investigate whether rocket scientist Wernher von Braun might have found inspiration in technology found at the alleged UFO crash in Roswell.

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

The race to develop the first atomic bomb was critical amid the struggle for WWII victory. Experts reveal new evidence behind Germany's top-secret development of nuclear weapons.

Explore classic and underrated aircraft, from WWII fighters to the Screaming Eagles F4, showcasing aviation's evolving history.

History's greatest geniuses have often said their ideas came from visions or hallucinations. But could they have come from aliens? Experts investigate.

Experts investigate whether rocket scientist Wernher von Braun might have found inspiration in technology found at the alleged UFO crash in Roswell.

Discover a massive tsunami hundreds of feet high that never touches land and an image from space may have revealed the location of the Garden of Eden.

Discover an island the size of Manhattan that vanishes without a trace and a lost city in the heart of the Amazonian jungle.

First seen from space in 1965, the Eye of the Sahara is a beautiful 25-mile structure, but how it formed remains a mystery.

NASA astronaut Mike Barratt describes photographing a strange ring in the ice on the world's oldest lake from the International Space Station.

A possible smoke screen over North Korea worries military analysts while an amateur archaeologist makes an extraordinary discovery.

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

The race to develop the first atomic bomb was critical amid the struggle for WWII victory. Experts reveal new evidence behind Germany's top-secret development of nuclear weapons.

Explore classic and underrated aircraft, from WWII fighters to the Screaming Eagles F4, showcasing aviation's evolving history.

This episode delves into the truth behind the rumours of Hitler's sex life, including whispers of homosexuality, voyeurism and sadomasochism.

Explore how women were active, often violent participants in the war and its atrocities - especially during the holocaust.

History's greatest geniuses have often said their ideas came from visions or hallucinations. But could they have come from aliens? Experts investigate.

Experts investigate whether rocket scientist Wernher von Braun might have found inspiration in technology found at the alleged UFO crash in Roswell.

With all the activity that's been recorded here, Sedona seemingly doubles as an intergalactic airport - but what is drawing UFOs to this spot.

Treasure Hunter. D-Day: Ross goes in search of wrecks that help tell the story of D-Day and discovers that winning wasn't just a case of superior power, but also ingenuity.

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

Witness a remote island linked to one of the world's most famous aviation mysteries and explore thousands of shipwrecks in the Bermuda Triangle.

A maggot-infested pickup crawls into the shop and rises from the dead before a vandalised Mercedes arrives on the scene.

In North Carolina, Jaime lets Caleb take charge for the day. Meanwhile, in Minnesota, a beat up Chevy Impala gets all wrapped up and ready to roar.

Experts investigate the mysterious origins of mummification. Could this global practice be proof that aliens once visited Earth.

From Rasputin to the Nazis, many people throughout history are thought to have tapped into dark powers. Could they have been connecting with extraterrestrials.

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

In the final months of WWII, how close were the Nazis and Japan to creating the nuclear explosion that would win the war? Experts and historians examine the evidence.

Explore classic and underrated aircraft, from WWII fighters to the Screaming Eagles F4, showcasing aviation's evolving history.

Experts investigate the mysterious origins of mummification. Could this global practice be proof that aliens once visited Earth.

From Rasputin to the Nazis, many people throughout history are thought to have tapped into dark powers. Could they have been connecting with extraterrestrials.

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.

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.

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.

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

In the final months of WWII, how close were the Nazis and Japan to creating the nuclear explosion that would win the war? Experts and historians examine the evidence.

Explore classic and underrated aircraft, from WWII fighters to the Screaming Eagles F4, showcasing aviation's evolving history.

Discover a revolutionary War era ship hides under the streets of New York and a sprawling Roman villa is unearthed in the backyard of an English home.

Explores humanity's quest for immortality through legendary artifacts like the Holy Grail, Fountain of Youth and Philosopher's Stone.

Experts investigate the mysterious origins of mummification. Could this global practice be proof that aliens once visited Earth.

From Rasputin to the Nazis, many people throughout history are thought to have tapped into dark powers. Could they have been connecting with extraterrestrials.

What is it about this barren land that is attracting alien attention? Is it the sensation of otherworldliness making it feel like home.

The U-Boat Terror: Inspired by the story of his two cousins that died at sea in WWII, Ross Kemp heads up to Scapa Flow where he finds treasure that could link back to his family.

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

The Pyramids of Giza could be a map of the stars. First responders bring hope during Hurricane Katrina. An Indonesian volcano erupts in a shade of blue.

Jeremy and his team are confronted with a Mercury Cougar filled with over 15 years of cat urine. A Toyota 4Runner covered in dog hair finally gets groomed.

In Georgia, a cockroach-infested 1940s Ford goes from disgusting to deluxe, while a beat-up BMW transforms into a bright, shiny beamer in North Carolina.

Eerie encounters at 40,000 feet, accounts of UFOs taking control of aircraft, and jumbo jets disappearing. Is this proof of aliens in our airspace.

Could the megalithic structures of Malta - and an underground complex housing otherworldly remains - be linked to local legends of alien visitation.

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

Explore classic and underrated aircraft, from WWII fighters to the Screaming Eagles F4, showcasing aviation's evolving history.

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

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

The Mary Rose: Ross returns to training with dive master Neil Brock and explores the site of Britain's most famous wreck: the Mary Rose.

Nazi Menace: The quest continues in the Red Sea, a deeply personal journey given Ross' grandfather fought in the North Africa campaign during WWII.

Eerie encounters at 40,000 feet, accounts of UFOs taking control of aircraft, and jumbo jets disappearing. Is this proof of aliens in our airspace.

Could the megalithic structures of Malta - and an underground complex housing otherworldly remains - be linked to local legends of alien visitation.

Capture of a key Nazi uncovers shocking realities. Amid demands for accountability, as Vera and her team navigate murky waters to confront uncomfortable truths.

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.

An elite group of British paratroopers launch a midnight raid in order to capture Hitler's unusual radar equipment.

Journey back to 480 BC, when King Leonidas and his 300 Spartans successfully blocked Xerxes' two-million-strong Persian army at Thermopylae.

Rome never recovered after Arminius' tactics in the Teutoburg Forest. Many of the associated riddles are answered, but some remain unresolved.

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.

Eerie encounters at 40,000 feet, accounts of UFOs taking control of aircraft, and jumbo jets disappearing. Is this proof of aliens in our airspace.

Could the megalithic structures of Malta - and an underground complex housing otherworldly remains - be linked to local legends of alien visitation.

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

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.

The Reckoning 1945-1948: In 1945, WWII was over but the violence had not ended. The survivors want to blame the Germans. The reckoning with National Socialism is ambivalent.

Examine a 9,000-year-old clay head, a 1950s machine built to control the weather and a map which could be the oldest ever found.

Discover Tikal, one of the largest and most powerful archaeological sites and urban centers of pre-Columbian Mayan civilisation.

Count down the world's top ten pyramid sites, from hidden structures in Peru to the famous landmarks of Giza in Egypt.

Count down the top 10 mysterious devices found around the world, from strange discs found in a cave in China to an ancient Greek computer.

The definitive combat helicopter debuted in Southeast Asia, serving as transport, gunship, smoke ship, command center, MediVac and many other roles.

Explore classic and underrated aircraft, from WWII fighters to the Screaming Eagles F4, showcasing aviation's evolving history.

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

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

Suez: Ross hops to Plymouth and explores a coastline littered with treasures. A bout of hypercapnia leaves Ross shaken after exploring a shipwreck.

Treasure Hunter. D-Day: Ross goes in search of wrecks that help tell the story of D-Day and discovers that winning wasn't just a case of superior power, but also ingenuity.

Count down the world's top ten pyramid sites, from hidden structures in Peru to the famous landmarks of Giza in Egypt.

Count down the top 10 mysterious devices found around the world, from strange discs found in a cave in China to an ancient Greek computer.

What is the fate of our cars, planes and roads? What part would armadillos play in a future without people? And how do abandoned oil refineries threaten major disaster.

Water gives life, but it can also destroy. Discover how, in a world without people, rain submerges New Orleans and corrosion topples Seattle's Space Needle.

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.

Declassified: Explore some of the darker elements of the MK Ultra programme, which sought out a miracle mind control method via human experimentation.

Bombing the Reich: Towards the end of the war, the bombing of the city of Dresden provided one of the most controversial episodes of the war. This episode tells the story.

Road to Burma: The fall of Singapore and brutal Burma Railway highlight the conflict, alongside the Chindits and Merrill's Marauders.

Count down the world's top ten pyramid sites, from hidden structures in Peru to the famous landmarks of Giza in Egypt.

Count down the top 10 mysterious devices found around the world, from strange discs found in a cave in China to an ancient Greek computer.

Examine a submerged funerary complex in Greece, ancient mammal footprints preserved by a Turkish volcanic eruption and North American fossils from the post-dinosaur era.

A Bronze Age village, a Notre Dame fire, and a 19th-century grave reveal ancient lifestyles. Tar pits showcase extinct mammals and shed light on prehistoric climate change.

Rendlesham: Craig Charles joins forces with world-renowned space journalist Sarah Cruddas to investigate some of the most perplexing UFO encounters of recent times.

Animal cloning has been a reality for decades but the disturbing truth is that human cloning may be much closer than you think.

Is this half-man, half-ape simply a figment of our collective imagination or does he really exist? Experts ask whether he is being hidden from us and why.

Ian takes a youthful approach to an old but precious project.

Could extraterrestrials have left us clues to the universe's mysteries? Experts investigate cryptic puzzles that might have been left by ancient aliens.

A look at the accounts of modern-day alien abductees. Plus, could the bizarre Paracas skulls discovered by Julio Tello be of extraterrestrial origin.

We are at War: The German invasion of Poland starts and Jews face segregation. Mussolini allies with Hitler, Churchill is appointed UK PM and Germany invades France.

In his role as Adolf Hitler's favourite architect, Albert Speer was a central figure in the Fuhrer's inner circle and helped cement his position in power.

Explore classic and underrated aircraft, from WWII fighters to the Screaming Eagles F4, showcasing aviation's evolving history.

Could extraterrestrials have left us clues to the universe's mysteries? Experts investigate cryptic puzzles that might have been left by ancient aliens.

A look at the accounts of modern-day alien abductees. Plus, could the bizarre Paracas skulls discovered by Julio Tello be of extraterrestrial origin.

Alice Roberts follows archaeologists as they excavate Iron Age Britain's most spectacular grave - a Yorkshire chariot burial.

Dr Alice Roberts explores a secret location in the Cotswolds, which gives up a very precious and fragile artefact.

The archaeologists get more than they bargained for while exploring the childhood home of Lady Jane Grey.

Dig into how a lobster helped archaeologists discover an 8000-year-old underwater settlement.

The team hunt for artefacts from World War II.

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

In his role as Adolf Hitler's favourite architect, Albert Speer was a central figure in the Fuhrer's inner circle and helped cement his position in power.

Explore classic and underrated aircraft, from WWII fighters to the Screaming Eagles F4, showcasing aviation's evolving history.

Roadworks on the A9 road uncover the remains of a young woman who lived and died in the early Bronze Age. Was she one of the so-called Beaker People.

Revealing the encrypted German telegram could save Britain in its darkest hour. Can a team of geniuses decode the message in time.

Could extraterrestrials have left us clues to the universe's mysteries? Experts investigate cryptic puzzles that might have been left by ancient aliens.

A look at the accounts of modern-day alien abductees. Plus, could the bizarre Paracas skulls discovered by Julio Tello be of extraterrestrial origin.

With more than 300 UFO sightings each year, the people living within the Falkirk Triangle can't help but feel uneasy about the strange occurrences.

The Kaiser Sunken Fleet: Ross Kemp continues his adventure in Scapa Flow, plunging down on the wrecks of a German warship and an experimental submarine aircraft called the M2.

Alice Roberts follows archaeologists as they excavate Iron Age Britain's most spectacular grave - a Yorkshire chariot burial.

Discover strange aquatic mammals populating a river in Columbia, a ship marooned in sand along Namibia's Skeleton Coast and a Boeing 727 in a pine forest.

Jeremy recruits his daughter to clean a '63 Imperial with three decades of dirt, decay and rodents. A soiled Camaro Super Sport is in need of an extensive makeover.

In Minnesota, a '65 Chevy Corvair that's been through a tornado gets a whirlwind makeover, while a rancid Dodge Ram goes from mouldy mess to majestic in Georgia.

Experts find evidence suggesting that ancient aliens saved humanity from great floods sent by the gods. Can we rely on extra-terrestrials to save us again.

Ancient Alien theorists explore world mythology as they investigate whether extraterrestrials could be responsible for our existence.

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.

Wernher von Braun was vital to NASA's Apollo 11 mission to put a man on the Moon, but this 'American hero' had his Nazi past kept under wraps.

Explore classic and underrated aircraft, from WWII fighters to the Screaming Eagles F4, showcasing aviation's evolving history.

Experts find evidence suggesting that ancient aliens saved humanity from great floods sent by the gods. Can we rely on extra-terrestrials to save us again.

Ancient Alien theorists explore world mythology as they investigate whether extraterrestrials could be responsible for our existence.

An elite group of British paratroopers launch a midnight raid in order to capture Hitler's unusual radar equipment.

On June 10, 1942, Major Georges Bergé's team landed in Crete to destroy Luftwaffe planes at Heraklion airfield. They faced a tough mission.

Ten British commandos, led by Major Hasler, leave the submarine Junon to paddle to Bordeaux and sabotage German warships.

On September 15, 1942, 12 commandos from the Special Operations Executive arrived in Northern Norway by submarine on a nearly suicidal mission.

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.

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

Wernher von Braun was vital to NASA's Apollo 11 mission to put a man on the Moon, but this 'American hero' had his Nazi past kept under wraps.

Explore classic and underrated aircraft, from WWII fighters to the Screaming Eagles F4, showcasing aviation's evolving history.

Waco Burning. The Waco siege, a 51-day standoff involving the Branch Davidians 1993, left nearly 80 people dead. Re-examine the shootout and the role played by David Koresh.

Blades of Fury: From the destructive Viking axe to the sacred but deadly Samurai katana, razor-sharp blades wielded by fearsome warriors have spilled blood and forged empires.

Experts find evidence suggesting that ancient aliens saved humanity from great floods sent by the gods. Can we rely on extra-terrestrials to save us again.

Ancient Alien theorists explore world mythology as they investigate whether extraterrestrials could be responsible for our existence.

Every inexplicable flash or strange aircraft makes us believe we've spotted extraterrestrials - but what if they've been watching us all along.

Slaver Ship Secrets: Ross Kemp is shocked by what he discovers as he dives on the wreck of a steam-age ship in north Devon, and a potential early slaver ship in Plymouth.

Dr Alice Roberts explores a secret location in the Cotswolds, which gives up a very precious and fragile artefact.

Malta loses a natural treasure, an enormous fiery vortex is seen in California and a mysterious radioactive hotspot is found near Chernobyl.

A beat-up '68 Bronco requires a substantial makeover in North Carolina, while in Minnesota, a trashed Trans AM proves hard work when it gets back to the shop.

In Minnesota, a cigarette-infested Dodge Charger receives a smoking-hot makeover, while a foul-smelling Acura comes clean in Georgia.

Experts explore the disappearance of civilisations throughout time and across the globe. Could clues left in their wake point to an otherwordly explanation.

Experts investigate whether alien life forms are thriving in our seas, following Russian cosmonauts' discovery of living plankton in space.

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

As one of their most controversial scientists, Heisenberg was key in the Nazis' efforts to build an atomic bomb. How close was he to achieving his goal.

Explore classic and underrated aircraft, from WWII fighters to the Screaming Eagles F4, showcasing aviation's evolving history.

Experts explore the disappearance of civilisations throughout time and across the globe. Could clues left in their wake point to an otherwordly explanation.

Experts investigate whether alien life forms are thriving in our seas, following Russian cosmonauts' discovery of living plankton in space.

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.

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

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

Beyond Nazca: Giorgio Tsoukalos draws on evidence from past series as he takes an in-depth look at the mystery of Southern Peru's Nasca Lines.

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.

Did a retired Army officer find anomalies in NASA solar photos? Could a giant shark hint at megalodons.

As one of their most controversial scientists, Heisenberg was key in the Nazis' efforts to build an atomic bomb. How close was he to achieving his goal.

Explore classic and underrated aircraft, from WWII fighters to the Screaming Eagles F4, showcasing aviation's evolving history.

When the SS Mont-Blanc and the SS Imo collided in 1917 in the harbour of Halifax, Canada, the subsequent explosion killed or injured almost 11,000 people.

The Last Emperor: The series ends with a look at the demise of the Roman Empire. Despite efforts from the last emperor, the Romans become outnumbered by foreign invaders.

Experts explore the disappearance of civilisations throughout time and across the globe. Could clues left in their wake point to an otherwordly explanation.

Experts investigate whether alien life forms are thriving in our seas, following Russian cosmonauts' discovery of living plankton in space.

California is home to numerous sightings of unidentified flying objects. The size of the state is a recipe for explained and unexplained sightings.

Gun Runners: Hearing about his great-grandfather who served in the Merchant Navy inspires Ross to explore the wreck of a WWII cargo ship and try to recover its military supplies.

The archaeologists get more than they bargained for while exploring the childhood home of Lady Jane Grey.

Explore a long-forgotten network of Native American earthworks, a battlefield mystery in Belgium and a mysterious blood red lake on a Greek island.

In North Carolina, a forgotten Crestline goes from rat resort to regal ride. Then, Jeremy tries to properly clean a special edition Mustang.

In Minnesota, a 1957 Dodge Coronet taken over by raccoons needs some care to get it looking like the Batmobile.

Experts investigate ancient man's apparent obsession with building pyramids, and whether extra-terrestrials may have helped with their construction.

Crop circles are a global phenomenon, with 10,000 seen worldwide. But are these strange patterns simply a hoax or could they be proof of UFO activity.

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.

Hans Kammler's fingerprints can be found all over the Third Reich's most prestigious and deadly engineering projects, including rockets and concentration camps.

The designer of one of the most popular car brands in history, Ferdinand Porsche would not have seen his success without the support of Adolf Hitler.

Experts investigate ancient man's apparent obsession with building pyramids, and whether extra-terrestrials may have helped with their construction.

Crop circles are a global phenomenon, with 10,000 seen worldwide. But are these strange patterns simply a hoax or could they be proof of UFO activity.

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

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

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

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

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.

Is a picture taken in the 1890s the first Bigfoot photo ever.

Hans Kammler's fingerprints can be found all over the Third Reich's most prestigious and deadly engineering projects, including rockets and concentration camps.

The designer of one of the most popular car brands in history, Ferdinand Porsche would not have seen his success without the support of Adolf Hitler.

Hitler held many secrets he went through great lengths to hide throughout his life. This episode reveals the truth about his drug addiction and genital deformity.

Meet the women who took Hitler under their wing, training him in the methods of high society and power - only to be left behind once he achieved it.