Aliens And Temples Of Gold: Experts examine beliefs that a French church provides a gateway to another universe. Plus, could the Sphinx be built on a library left by aliens? (S3, ep 4).

Alien Power Plants: Giorgio Tsoukalos draws on evidence from past series as he asks whether aliens introduced the Greeks and Egyptians to electricity. (S1, ep 4).

Tikal: Discover Tikal, one of the largest and most powerful archaeological sites and urban centers of pre-Columbian Mayan civilisation. (S3, ep 3).

The Pierre Hotel Robbery: Two skilled thieves go after New York's Pierre Hotel. The team take over the hotel, getting into the lobby vault and hundreds of safe deposit boxes. (S1, ep 3).

Aliens And Sacred Places: Experts explore evidence suggesting Mecca's Grand Mosque and Jerusalem's Temple Mount were the ancient meeting places of man and extraterrestrials. (S3, ep 3).

Aliens And Temples Of Gold: Experts examine beliefs that a French church provides a gateway to another universe. Plus, could the Sphinx be built on a library left by aliens? (S3, ep 4).

The Mystery of Puma Punku. Experts in the extra-terrestrial examine the Inca ruin and its mysteriously intricate carved blocks. (S1, ep 5).

Chichen Itza: Considered one of the New Seven Wonders of the World, the Mayan City of Chichen Itza was the capital of a powerful civilisation. (S3, ep 4).

A Grave Discovery: The Villescas family talk with an expert about a spur they found. Meanwhile, the Dillmans use drones to locate an important ancient symbol. (5 of 8).

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? (S1, ep 1).

From a hidden tomb in Turkey to a death bed in Norway, uncover the origins of the curses surrounding the Karun Treasure, Edvard Munch's The Sick Child paintings and more. (S1, ep 9).

Nazi Relics: Hamilton White and Carl Cookson are back on the trail of some truly astonishing relics in season two. (5 of 5).

Explore Ragnarok and the chambers of horror, see the penguin apocalypse and attack of the mega-mice and catch a family holiday - North Korean style. (S5, ep 14).

Who is the Zodiac Killer?: In 1969, an unidentified killer taunted investigators with cryptic ciphers. Explore six theories that could help solve this 50-year-old mystery. (S4, ep 2).

Motorcycle Murder Club: A Hells Angel proves his loyalty to the gang by leading a mass slaughter of their enemies - but he soon wrestles with his conscience and seeks an exit. (S1, ep 2).

Waters Of Death: 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.

Suspicious Haunting, Shadow Stalker, Christmas Terror: A nurse is threatened by ghosts watching her every move. A war veteran experiences inexplicable events at his new job. (S1, ep 10).

Aliens And Sacred Places: Experts explore evidence suggesting Mecca's Grand Mosque and Jerusalem's Temple Mount were the ancient meeting places of man and extraterrestrials. (S3, ep 3).

Aliens And Temples Of Gold: Experts examine beliefs that a French church provides a gateway to another universe. Plus, could the Sphinx be built on a library left by aliens? (S3, ep 4).

An out-of-this-world look at ten of the most fascinating alien encounters ever. (S1, ep 8).

A Grave Discovery: The Villescas family talk with an expert about a spur they found. Meanwhile, the Dillmans use drones to locate an important ancient symbol. (5 of 8).

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? (S1, ep 1).

From a hidden tomb in Turkey to a death bed in Norway, uncover the origins of the curses surrounding the Karun Treasure, Edvard Munch's The Sick Child paintings and more. (S1, ep 9).

Aliens And Mysterious Rituals: Experts question whether the notion of rituals, such as funerals and festivals, was brought to earth by ancient extraterrestrial visitors. (S3, ep 5).

Aliens And The Ancient Engineers: Experts investigate an ancient fortress in Peru said to have been built with laser tools. Could it prove that aliens once visited Earth? (S3, ep 6).

The Mystery of Puma Punku. Experts in the extra-terrestrial examine the Inca ruin and its mysteriously intricate carved blocks. (S1, ep 5).

Chichen Itza: Considered one of the New Seven Wonders of the World, the Mayan City of Chichen Itza was the capital of a powerful civilisation. (S3, ep 4).

The Lufthansa Heist: A clued-up mafia crew attempt an ambitious airline heist at JFK International Airport. Those involved disappeared and met their fate in the aftermath. (S1, ep 4).

Aliens And Mysterious Rituals: Experts question whether the notion of rituals, such as funerals and festivals, was brought to earth by ancient extraterrestrial visitors. (S3, ep 5).

Aliens And The Ancient Engineers: Experts investigate an ancient fortress in Peru said to have been built with laser tools. Could it prove that aliens once visited Earth? (S3, ep 6).

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? (S1, ep 6).

Sphinx: The most monumental ancient sculpture in the world, the half-man, half-lion Sphinx arouses the curiosity of the entire planet - but how was such a huge structure built? (S3, ep 5).

A Hidden Chamber: As the three families enter the final throws of their adventure across the seven cities of gold, a hidden chamber stops them in their tracks. (6 of 8).

The Illuminati: While the Illuminati secret order was disbanded in 1785, many believe this elite group still hold the power and pull strings from behind closed doors. (S1, ep 2).

From the Austro-Hungarian Empire to Britain in the early Middle Ages, uncover the origins of the curses surrounding Franz Ferdinand's car, Lindow Man and more. (S1, ep 10).

New. Sarno Slides: In May 1998, the town of Sarno in southern Italy was ravaged by rain. This caused a huge mud slide that travelled up to 60 kilometres and buried dozens of people.

Uncover an atomic tomb, witness multi-million dollar wacky races and discover the country on fire. (S5, ep 15).

Aliens And The Ancient Engineers: Experts investigate an ancient fortress in Peru said to have been built with laser tools. Could it prove that aliens once visited Earth? (S3, ep 6).

The Medieval Tower: The Tower of London opens up for an access all areas look at one of the most incredible historical sites in the world. (1 of 4).

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. (10 of 10).

A New Cold War: How will the new Cold War, involving the US, Russia, the UK and China, play out? Will trade and cyber warfare be the worst of it or is military war inevitable? (S2, ep 10).

Aliens And Mysterious Rituals: Experts question whether the notion of rituals, such as funerals and festivals, was brought to earth by ancient extraterrestrial visitors. (S3, ep 5).

Aliens And The Ancient Engineers: Experts investigate an ancient fortress in Peru said to have been built with laser tools. Could it prove that aliens once visited Earth? (S3, ep 6).

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. (10 of 10).

A Hidden Chamber: As the three families enter the final throws of their adventure across the seven cities of gold, a hidden chamber stops them in their tracks. (6 of 8).

The Illuminati: While the Illuminati secret order was disbanded in 1785, many believe this elite group still hold the power and pull strings from behind closed doors. (S1, ep 2).

From the Austro-Hungarian Empire to Britain in the early Middle Ages, uncover the origins of the curses surrounding Franz Ferdinand's car, Lindow Man and more. (S1, ep 10).

Human Hieroglyphs: Tattoos, piercings and body modifications are big business. But could our desire for these changes stem from a profound link to our ancestors? (S12, ep 19).

The Storming of Area 51: When millions responded to a call to storm Area 51, the US military vowed deadly force. Are they hiding the truth about extraterrestrials on Earth? (S12, ep 20).

Secrets of the Exoplanets: Over the past 20 years, thousands of potentially habitable exoplanets have been found. Could they be home to intelligent extraterrestrial life? (S12, ep 22).

Wartime Dover: As series two kicks off, Professor Alice Roberts examines Britain in wartime by looking at the coastal town of Dover.

Medieval Lincoln: Alice is in Lincoln, getting to grips with life in medieval England. She visits the magnificent cathedral that was once the tallest building in the world. (S3, ep 1).

The Romans: An awe-inspiring year of archaeological digs with Dr Alice Roberts. Roman finds include an amazing coin hoard and a man buried on a pile of dead animals. (S1, ep 1).

Prehistory: Humans are found to have lived in Britain earlier than thought when tools are unearthed in Norfolk, while some of our ancestors' customs are revealed at another dig. (S1, ep 2).

Viking Camp and Iron Age Gold: Dr Alice Roberts explores the most exciting finds from West Britain. Iron Age gold in Britain is unearthed and a Viking camp is discovered. (S6, ep 1).

Ancient Global Warming: Did our ancestors believe they were cursed? Professor Alice Roberts explores historic cataclysmic events such as wars and floods to dispel the myths. (1 of 5).

Roman Chester: Alice tells the story of Roman Britain by studying the history of Chester. She enjoys an authentic Roman feast and checks out an archaeological discovery. (1 of 6).

Wartime Dover: As series two kicks off, Professor Alice Roberts examines Britain in wartime by looking at the coastal town of Dover.

Medieval Lincoln: Alice is in Lincoln, getting to grips with life in medieval England. She visits the magnificent cathedral that was once the tallest building in the world. (S3, ep 1).

The Romans: An awe-inspiring year of archaeological digs with Dr Alice Roberts. Roman finds include an amazing coin hoard and a man buried on a pile of dead animals. (S1, ep 1).

Prehistory: Humans are found to have lived in Britain earlier than thought when tools are unearthed in Norfolk, while some of our ancestors' customs are revealed at another dig. (S1, ep 2).

Viking Camp and Iron Age Gold: Dr Alice Roberts explores the most exciting finds from West Britain. Iron Age gold in Britain is unearthed and a Viking camp is discovered. (S6, ep 1).

Charles II: Professor Alice Roberts forensically investigates King Charles II's death, using research, medical expertise and dramatic recreation to reach a possible conclusion. (S1, ep 1).

The True Story of the Pirates of the Caribbean: Kevin dives into the blue waters of the Caribbean to find relics from piracy's heyday in the region. (S2, ep 3).

Pipes of Freedom: Using homemade instruments to carve a hole in the roof after climbing prison pipes, eight inmates escaped from a New Mexico detention centre in 2008. (S1, ep 3).

Human Hieroglyphs: Tattoos, piercings and body modifications are big business. But could our desire for these changes stem from a profound link to our ancestors? (S12, ep 19).

The Storming of Area 51: When millions responded to a call to storm Area 51, the US military vowed deadly force. Are they hiding the truth about extraterrestrials on Earth? (S12, ep 20).

Secrets of the Exoplanets: Over the past 20 years, thousands of potentially habitable exoplanets have been found. Could they be home to intelligent extraterrestrial life? (S12, ep 22).

Charles II: Professor Alice Roberts forensically investigates King Charles II's death, using research, medical expertise and dramatic recreation to reach a possible conclusion. (S1, ep 1).

The Medieval Tower: The Tower of London opens up for an access all areas look at one of the most incredible historical sites in the world. (1 of 4).

Pipes of Freedom: Using homemade instruments to carve a hole in the roof after climbing prison pipes, eight inmates escaped from a New Mexico detention centre in 2008. (S1, ep 3).

The Mystery of Nan Madol: Giorgio A Tsoukalos and David Childress explore the mysterious chain of man-made islets in Micronesia's Nan Madol. Could local legends be true? (S12, ep 23).

The Relics of Roswell: In 1947, the US military collected debris of what they claimed was a crashed weather balloon outside Roswell, New Mexico. But was there more to it? (S12, ep 25).

Destination Chile: Chile has the highest number of UFO sightings of anywhere on Earth. Now, incredible footage of a strange craft has people asking again about the reasons why. (S12, ep 26).

Georgian Bristol: Alice Roberts explores the Georgian era in her hometown of Bristol, from architectural gems and the world's first chocolate factory to the horror of the slave trade.

Restoration London: Alice heads to London to attempt to make sense of the world-changing events during the short but eventful Restoration period. (S3, ep 2).

The Anglo Saxons: In Northumbria, skeletons tell tales of violent death and tenderness, and people curate grave goods in an amazing community project. (S1, ep 3).

The Tudors: Dr Alice Roberts pays tribute to the Bard, visiting Shakespeare's first theatre in London's Shoreditch and sifting through the poet's rubbish! (S1, ep 4).

Caesar And Shipwrecks: Dr Alice Roberts explores the biggest collection of Roman writing tablets. A fort scattered with human skulls provides evidence of Caesar's invasion. (S6, ep 2).

Rome's Rise and Fall: Did our ancestors believe they were cursed? Professor Alice Roberts explores historic cataclysmic events through a scientific lens to dispel the myths. (2 of 5).

Viking York: Alice looks into the history of York, taking part in a Viking battle and examining an almost 1,000-year-old poo. (2 of 6).

Georgian Bristol: Alice Roberts explores the Georgian era in her hometown of Bristol, from architectural gems and the world's first chocolate factory to the horror of the slave trade.

Restoration London: Alice heads to London to attempt to make sense of the world-changing events during the short but eventful Restoration period. (S3, ep 2).

The Anglo Saxons: In Northumbria, skeletons tell tales of violent death and tenderness, and people curate grave goods in an amazing community project. (S1, ep 3).

The Tudors: Dr Alice Roberts pays tribute to the Bard, visiting Shakespeare's first theatre in London's Shoreditch and sifting through the poet's rubbish! (S1, ep 4).

Caesar And Shipwrecks: Dr Alice Roberts explores the biggest collection of Roman writing tablets. A fort scattered with human skulls provides evidence of Caesar's invasion. (S6, ep 2).

Elizabeth I: Professor Alice Roberts strives to get to the bottom of Elizabeth I's death, using research, medical expertise and dramatic recreation to determine possible reasons. (S1, ep 2).

The Pharaoh's Curse: Egyptian royals in the Valley of Kings promise turmoil for anyone who dares to disturb their eternal rest. (S1, ep 5).

In Brazil, three men escape a close encounter. In Canada, a thirteen-year-old boy is blinded temporally after investigating a bizarre object. (S2, ep 8).

A father and son see mysterious lights near their property and call the sheriff's office. A large craft covers a French town in an odd material. (S2, ep 9).

The Mystery of Nan Madol: Giorgio A Tsoukalos and David Childress explore the mysterious chain of man-made islets in Micronesia's Nan Madol. Could local legends be true? (S12, ep 23).

The Relics of Roswell: In 1947, the US military collected debris of what they claimed was a crashed weather balloon outside Roswell, New Mexico. But was there more to it? (S12, ep 25).

Destination Chile: Chile has the highest number of UFO sightings of anywhere on Earth. Now, incredible footage of a strange craft has people asking again about the reasons why. (S12, ep 26).

The Pharaoh's Curse: Egyptian royals in the Valley of Kings promise turmoil for anyone who dares to disturb their eternal rest. (S1, ep 5).

Elizabeth I: Professor Alice Roberts strives to get to the bottom of Elizabeth I's death, using research, medical expertise and dramatic recreation to determine possible reasons. (S1, ep 2).

The True Story of the Pirates of the Caribbean: Kevin dives into the blue waters of the Caribbean to find relics from piracy's heyday in the region. (S2, ep 3).

Aliens, Plagues And Epidemics: Experts investigate reports of strange bronze flying ships spotted during the Black Death. Could aliens have brought deadly disease to Earth? (S3, ep 7).

Aliens And Lost Worlds: Experts search for proof of alien visitors in the ruins of lost civilisations. Could Mayan carvings reveal a city once ruled by otherworldly beings? (S3, ep 8).

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? (S1, ep 6).

Sphinx: The most monumental ancient sculpture in the world, the half-man, half-lion Sphinx arouses the curiosity of the entire planet - but how was such a huge structure built? (S3, ep 5).

The United California Bank Job: A crew described by the FBI as \"the best ever\" raid a California bank in 1972, leaving with millions allegedly linked to President Richard Nixon. (S1, ep 5).

Aliens, Plagues And Epidemics: Experts investigate reports of strange bronze flying ships spotted during the Black Death. Could aliens have brought deadly disease to Earth? (S3, ep 7).

Aliens And Lost Worlds: Experts search for proof of alien visitors in the ruins of lost civilisations. Could Mayan carvings reveal a city once ruled by otherworldly beings? (S3, ep 8).

Aliens And The Lost Ark: Experts on the extraterrestrial investigate the possibility of the religious relic being an alien artefact. (S1, ep 7).

Castle of Chambord: Designed on the medieval model of forts with its enclosure and large corner towers, Chambord is France's largest and most iconic castle. (S3, ep 6).

Chamber of Secrets: The Dillman family drill into a hidden treasure chamber. Nevada's gold miners must find another way into the rest of the underground tunnel system. (7 of 8).

The Skull & Bones: Yale's Skull & Bones society is a pinnacle of the elite. But how do members get 'tapped' and is there any truth to the rumours surrounding this secret order? (S1, ep 3).

Ramses' Egyptian Empire: Vast statues, towering obelisks and incredible temples formed the legacy left by the greatest Egyptian Emperor. Cutting-edge graphics recreate this golden empire.

Boscastle Flood: In August 2004, the Cornish village of Boscastle is overwhelmed by storms and a torrent of fast-moving water. (S1, ep 2).

Find the billion-dollar horde buried deep beneath the deserts of Utah, discover the massacre so horrific it was captured from space and see the ice cave of the Norse fire God. (S5, ep 16).

Fire in the Hole: Ton and Allen have a blast when they strike gold with a dynamite detonator box. Plus, a 1890s treasure chest reveals secret compartments. (S2, ep 9).

Animal Instincts: A bidding war hands Ton and Allen a Winchester Model 1912 and a hunter's collection of big game, full-body taxidermy. (S2, ep 10).

Cleopatra's Daughter: The story of Cleopatra Selene, the little-known daughter of Cleopatra and Antony, who witnessed her dynasty collapse but survived to become a great queen. (S1, ep 3).

Win Every War. The Romans: Bruno Tonioli joins Al to look at key battle tactics during the Roman Invasion back in AD 43.

Legend of the Hairy Beast: Native American history is full of 'Hairy Man' stories and cave art. Did Native Americans know the truth behind the Bigfoot legend.

Aliens, Plagues And Epidemics: Experts investigate reports of strange bronze flying ships spotted during the Black Death. Could aliens have brought deadly disease to Earth? (S3, ep 7).

Aliens And Lost Worlds: Experts search for proof of alien visitors in the ruins of lost civilisations. Could Mayan carvings reveal a city once ruled by otherworldly beings? (S3, ep 8).

Uncover an atomic tomb, witness multi-million dollar wacky races and discover the country on fire. (S5, ep 15).

Chamber of Secrets: The Dillman family drill into a hidden treasure chamber. Nevada's gold miners must find another way into the rest of the underground tunnel system. (7 of 8).

The Skull & Bones: Yale's Skull & Bones society is a pinnacle of the elite. But how do members get 'tapped' and is there any truth to the rumours surrounding this secret order? (S1, ep 3).

Ramses' Egyptian Empire: Vast statues, towering obelisks and incredible temples formed the legacy left by the greatest Egyptian Emperor. Cutting-edge graphics recreate this golden empire.

Aliens And Deadly Weapons: From gunpowder to missiles, were these lethal weapons the product of human innovation or created with help from another, otherworldly source? (S3, ep 9).

Aliens And Evil Places: Experts investigate creepy places associated with death. Could otherworldly connections be responsible for strange disappearances and suicides? (S3, ep 10).

Aliens And The Lost Ark: Experts on the extraterrestrial investigate the possibility of the religious relic being an alien artefact. (S1, ep 7).

Castle of Chambord: Designed on the medieval model of forts with its enclosure and large corner towers, Chambord is France's largest and most iconic castle. (S3, ep 6).

The Museum of Natural History Heist: A trio risk it all to steal priceless jewels at the American Museum of Natural History, creeping 125 feet above the streets of Manhattan. (S1, ep 6).

Aliens And Deadly Weapons: From gunpowder to missiles, were these lethal weapons the product of human innovation or created with help from another, otherworldly source? (S3, ep 9).

Aliens And Evil Places: Experts investigate creepy places associated with death. Could otherworldly connections be responsible for strange disappearances and suicides? (S3, ep 10).

Aliens And The Creation Of Man: Can unexplained advances in human evolution be attributed to alien architects? Alien theorists look at the evidence. (S1, ep 8).

Witches: Can a site on the Lancashire-Yorkshire border shed more light on the Pendle Witch trials of 1612? (S1, ep 1).

Explosive Discoveries: In Utah, the Dillmans must tread carefully to avoid triggering an Aztec water trap. The Villescas family discover more secrets beneath the Fire Pits. (8 of 8).

Le Cercle: What started as a Catholic conservative group is now rumoured to control world politics. Learn about the ultra-secretive, invitation-only policy forum named Le Cercle. (S1, ep 4).

Churchill's Secret Bunkers: Cutting-edge technology gives an insider's look at the subterranean city built within Churchill's secret bunkers during the Second World War.

New. Thailand Tsunami: The story of an elephant trainer and a fisherman in Thailand who survived an enormous tsunami in 2004 which killed 300,000 people.

Decode the mysterious Arizona desert cypher, discover the lair of the war elephant and beware the zombie village. (S5, ep 17).

A team of experts investigate some of the most well-known UFO cases of the last 75 years, hoping to uncover the truth. (S1, ep 7).

Hans Kammler: Hans Kammler's fingerprints can be found all over the Third Reich's most prestigious and deadly engineering projects, including rockets and concentration camps. (S1, ep 4).

Thousands of UFO sightings and abductions are reported every year. This series examines these accounts and casts new light on historic cases. (S1, ep 10).

Sick Rides: The mega-rich love to display their wealth by acquiring flashy vehicles and the ancients were no different, whether it be chariots, horse-drawn carriages or boats. (S1, ep 11).

We Built this City: All wealthy people have the resources to create their ideal home, but these industrial tycoons weren't content with building just one single house. (S1, ep 12).

Aliens And Deadly Weapons: From gunpowder to missiles, were these lethal weapons the product of human innovation or created with help from another, otherworldly source? (S3, ep 9).

Aliens And Evil Places: Experts investigate creepy places associated with death. Could otherworldly connections be responsible for strange disappearances and suicides? (S3, ep 10).

Hans Kammler: Hans Kammler's fingerprints can be found all over the Third Reich's most prestigious and deadly engineering projects, including rockets and concentration camps. (S1, ep 4).

Explosive Discoveries: In Utah, the Dillmans must tread carefully to avoid triggering an Aztec water trap. The Villescas family discover more secrets beneath the Fire Pits. (8 of 8).

Le Cercle: What started as a Catholic conservative group is now rumoured to control world politics. Learn about the ultra-secretive, invitation-only policy forum named Le Cercle. (S1, ep 4).

Churchill's Secret Bunkers: Cutting-edge technology gives an insider's look at the subterranean city built within Churchill's secret bunkers during the Second World War.

Aliens And America's Founding Fathers: Could the Founding Fathers have hidden secrets about ancient aliens in their documents, buildings and symbols? Experts investigate. (S3, ep 11).

Aliens And The Creation Of Man: Experts investigate the mysterious Creation of Man, asking whether unexplained advances in human evolution could have been down to aliens. (S3, ep 12).

Aliens And The Creation Of Man: Can unexplained advances in human evolution be attributed to alien architects? Alien theorists look at the evidence. (S1, ep 8).

Witches: Can a site on the Lancashire-Yorkshire border shed more light on the Pendle Witch trials of 1612? (S1, ep 1).

The Dunbar Armored Depot Heist: Allan Pace and five old pals plan and execute a daring robbery of Los Angeles based Dunbar Armored Car Company in 1997. (S1, ep 7).

Aliens And America's Founding Fathers: Could the Founding Fathers have hidden secrets about ancient aliens in their documents, buildings and symbols? Experts investigate. (S3, ep 11).

Aliens And The Creation Of Man: Experts investigate the mysterious Creation of Man, asking whether unexplained advances in human evolution could have been down to aliens. (S3, ep 12).

Fleeing Parchman: A prisoner with a love of crime novels becomes the star of his own story when he escapes from Mississippi's notorious Parchman Penitentiary. (S2, ep 1).

Henry VIII: More clues to Henry VIII's life are unearthed as Helen Skelton and Alex Langlands join a new dig at one of nearly 60 royal residences owned by the monarch. (S1, ep 2).

Call To Duty: The story of the World War II aircraft carrier USS Enterprise. Join her as she sets sail in the Pacific on a mission to sink enemy submarines. (S1, ep 1).

The Freemasons: The Freemasons' fundamental ideals are liberty, equality, fraternity, tolerance and humanity. But others say that this secret society has very different goals. (S1, ep 5).

Jesus' Jerusalem: A journey back to the Jerusalem that Jesus would have visited throughout his life, using research, expert analysis and cutting-edge technology.

New. Sri Lanka Tsunami: The story of how a minister, his wife and 28 orphaned children under his care escaped a deadly Sri Lankan tsunami the morning after Christmas 2004.

Witness unexplained shapes in the deserts of Genghis Khan, see the mystery fleet of ice planes at the end of the Earth and look down at Kim Jong Un's terror factory from space. (S5, ep 18).

The Mystery of Genius: Genius is widely considered to be the ability to change the world, like inventing new technology, deciphering the mysteries of the universe. (S3, ep 9).

William Shatner. Mysterious Ancient Ruins: Series host William Shatner is back on the hunt to find answers to the unexplainable with the help of top scientists. (S3, ep 8).

Iceland's Glacier Tomb: In Russia, 34,000-year-old graves are discovered. Meanwhile, a team attempts to locate a British World War II aeroplane that went missing in Iceland. (S3, ep 5).

Experts investigate evidence suggesting that aliens have created the means for controlling humanity. They find that the shocking truth might be hidden right inside you. (S1, ep 9).

Aliens And America's Founding Fathers: Could the Founding Fathers have hidden secrets about ancient aliens in their documents, buildings and symbols? Experts investigate. (S3, ep 11).

Aliens And The Creation Of Man: Experts investigate the mysterious Creation of Man, asking whether unexplained advances in human evolution could have been down to aliens. (S3, ep 12).

Thousands of UFO sightings and abductions are reported every year. This series examines these accounts and casts new light on historic cases. (S1, ep 10).

Call To Duty: The story of the World War II aircraft carrier USS Enterprise. Join her as she sets sail in the Pacific on a mission to sink enemy submarines. (S1, ep 1).

The Freemasons: The Freemasons' fundamental ideals are liberty, equality, fraternity, tolerance and humanity. But others say that this secret society has very different goals. (S1, ep 5).

Jesus' Jerusalem: A journey back to the Jerusalem that Jesus would have visited throughout his life, using research, expert analysis and cutting-edge technology.

Aliens And The Secret Code: Experts scrutinise prehistoric ruins, asking whether humans could have built these advanced structures alone. Might they have had alien help? (S3, ep 14).

Aliens Gods And Heroes: Ancient alien theorists explore the origins of mythical gods. Could these tales of superhuman beings be based on sightings of extraterrestrials? (S3, ep 16).

Fleeing Parchman: A prisoner with a love of crime novels becomes the star of his own story when he escapes from Mississippi's notorious Parchman Penitentiary. (S2, ep 1).

Henry VIII: More clues to Henry VIII's life are unearthed as Helen Skelton and Alex Langlands join a new dig at one of nearly 60 royal residences owned by the monarch. (S1, ep 2).

The Gardner Museum Heist: Two thieves make off with a fortune's worth of artwork from a Boston museum. While the paintings remain missing, several suspects turn up dead. (S1, ep 8).

Aliens And The Secret Code: Experts scrutinise prehistoric ruins, asking whether humans could have built these advanced structures alone. Might they have had alien help? (S3, ep 14).

Aliens Gods And Heroes: Ancient alien theorists explore the origins of mythical gods. Could these tales of superhuman beings be based on sightings of extraterrestrials? (S3, ep 16).

Vietnam POW Escape: A German-American pilot, Dieter Dengler, uses survival skills honed as a child to escape a secret prison in Laos during the early years of the Vietnam war. (S2, ep 2).

Robin Hood: Helen and Alex head to Sherwood Forest, the home of Robin Hood, to discover if he ever truly existed. (S1, ep 3).

Vengeance At Midway: Amazing CGI graphics tell the story of how the USS Enterprise and sister carriers Yorktown and Hornet turned the tide of the Pacific battle during WWII. (S1, ep 2).

The Hermetic Order of the Golden Dawn: Examine the secret society that laid the groundwork for modern Wiccanism. Were their members really engaged with the paranormal? (S1, ep 6).

The Pagans: Explore Stonehenge, one of the greatest monuments of the ancient world. Experts delve into a new theory that sheds light on how it was used by the people who built it.

Mexico: For over a week, a tropical depression dumps massive rainfall over central Mexico's Sierra mountains. In Puebla, more than 100 mudslides are unleashed. (S1, ep 5).

Discover the link between Nazis in New Mexico and a mystery craft in Roswell, explore Australia's underground labyrinthine abyss and decode the cypher of Atomic Island. (S5, ep 19).

The Assassination of JFK: In 1963, President John F Kennedy is assassinated. A suspect is captured but investigators and amateur sleuths still investigate alternative theories. (S4, ep 3).

The Killing of Margo Compton: When Hells Angels are linked to the murder of a woman and her daughters, a detective embarks on an 18-year quest to bring the killers to justice. (S1, ep 3).

Wrath of God: Sacred buildings around the world begin to crumble without humans to maintain them. Clues about the planet's future lie in an abandoned desert town. (S2, ep 1).

Faces of the Reaper, Ghostly Goodbye, Beyond the Battlefield: A nurse gets trapped with the Angel of Death, a woman sees a dark apparition and a man has a ghostly encounter. (S1, ep 11).

Aliens And The Secret Code: Experts scrutinise prehistoric ruins, asking whether humans could have built these advanced structures alone. Might they have had alien help? (S3, ep 14).

Aliens Gods And Heroes: Ancient alien theorists explore the origins of mythical gods. Could these tales of superhuman beings be based on sightings of extraterrestrials? (S3, ep 16).

Experts investigate evidence suggesting that aliens have created the means for controlling humanity. They find that the shocking truth might be hidden right inside you. (S1, ep 9).

Vengeance At Midway: Amazing CGI graphics tell the story of how the USS Enterprise and sister carriers Yorktown and Hornet turned the tide of the Pacific battle during WWII. (S1, ep 2).

The Hermetic Order of the Golden Dawn: Examine the secret society that laid the groundwork for modern Wiccanism. Were their members really engaged with the paranormal? (S1, ep 6).

The Pagans: Explore Stonehenge, one of the greatest monuments of the ancient world. Experts delve into a new theory that sheds light on how it was used by the people who built it.

The Mayan Conspiracy: Experts investigate startling evidence suggesting that the Ancient Maya conspired with aliens. Was this how they acquired their knowledge of astrology? (S4, ep 1).

The Doomsday Prophecies: Experts scrutinise the Maya Calendar, which predicted the world would end in 2012. Could it have anticipated the arrival of an extraterrestrial god? (S4, ep 2).

Vietnam POW Escape: A German-American pilot, Dieter Dengler, uses survival skills honed as a child to escape a secret prison in Laos during the early years of the Vietnam war. (S2, ep 2).

Robin Hood: Helen and Alex head to Sherwood Forest, the home of Robin Hood, to discover if he ever truly existed. (S1, ep 3).

Warships of The World Wars: We examine how the battleship began the 20th century as a dominant force, but then saw its weaknesses exploited mercilessly in the World Wars. (S1, ep 1).

The Mayan Conspiracy: Experts investigate startling evidence suggesting that the Ancient Maya conspired with aliens. Was this how they acquired their knowledge of astrology? (S4, ep 1).

The Doomsday Prophecies: Experts scrutinise the Maya Calendar, which predicted the world would end in 2012. Could it have anticipated the arrival of an extraterrestrial god? (S4, ep 2).

San Quentin Breakout: A lifelong escape artist, Forrest Tucker, ends up in San Quentin prison - but despite his advanced age, he manages to engineer an audacious prison break. (S2, ep 3).

Dead Peasants: A site on the Welsh border containing almost 1,000 skeletons reveals secrets about life during the Black Death. (S1, ep 4).

Jaws Of The Enemy: 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. (S1, ep 3).

Crusaders of Vadum Jacob: The siege of Vadum Jacob in 1179 saw Muslim forces overcome the Knights Templar. Now, forensic analysis of the battleground can shed light on the war. (S3, ep 1).

Braveheart's Scotland: A recreation of 13th century Scotland and the battle against the English army famously fought by the inspirational William Wallace - AKA Braveheart.

Hurricane Ivan: In September 2004, 30 residents of Pensacola, Florida, plan to ride out Category Three Hurricane Ivan in their homes. It soon becomes a nightmare. (S1, ep 7).

Check out America's 1500 feet tall atomic tower, uncover the lost village of the damned and embark on a hunt for dinosaur fossils. from outer space? (S5, ep 20).

The Doomsday Prophecies: Experts scrutinise the Maya Calendar, which predicted the world would end in 2012. Could it have anticipated the arrival of an extraterrestrial god? (S4, ep 2).

The Tudor Tower: A new recruit joins the team and begins his career as a Beefeater with some testing exams. The Chief Curator reveals the history of Anne Boleyn within the walls. (2 of 4).

The Birth of Mickey: Recount the birth of Mickey Mouse, from being created as a pencil sketch to rocketing into untouchable, lasting fame. (S1, ep 1).

The Ancients: Amanda Holden and Dan Jones explore how attitudes towards sex differed drastically thousands of years ago in Ancient Sparta and Ancient Egypt. (S1, ep 1).

The Mayan Conspiracy: Experts investigate startling evidence suggesting that the Ancient Maya conspired with aliens. Was this how they acquired their knowledge of astrology? (S4, ep 1).

The Doomsday Prophecies: Experts scrutinise the Maya Calendar, which predicted the world would end in 2012. Could it have anticipated the arrival of an extraterrestrial god? (S4, ep 2).

The Birth of Mickey: Recount the birth of Mickey Mouse, from being created as a pencil sketch to rocketing into untouchable, lasting fame. (S1, ep 1).

Jaws Of The Enemy: 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. (S1, ep 3).

Crusaders of Vadum Jacob: The siege of Vadum Jacob in 1179 saw Muslim forces overcome the Knights Templar. Now, forensic analysis of the battleground can shed light on the war. (S3, ep 1).

Braveheart's Scotland: A recreation of 13th century Scotland and the battle against the English army famously fought by the inspirational William Wallace - AKA Braveheart.

The Mystery of the Stone Giants: From Egypt to Easter Island, towering figures built by ancient man stand watch over Earth. But do they depict visitors from another world? (S12, ep 27).

The World Before Time: New evidence reveals advanced civilisations might have existed on Earth thousands of years ago - is it possible that they lived with extraterrestrials? (S12, ep 28).

They Came From The Pleiades: In numerous ancient cultures, stories were told of ancestors from the Pleiades star cluster - could new scientific findings reveal the truth? (S12, ep 29).

Edwardian Cardiff: Alice tells the story of Edwardian Britain by studying the history of Cardiff, Britain's most Edwardian town. (3 of 6).

Portsmouth Age Of Empire: In Portsmouth, Alice Roberts learns about Nelson's dark side, the heat of the battle at Trafalgar, the role of the Navy in the British Empire, and more. (S3, ep 3).

Britannia: A newly discovered town in Devon turns history on its head and there's a shocking find by the Thames - almost 100 baby skeletons. (S2, ep 1).

Invaders: Dr Alice Roberts visits excavations in Orkney and York on the hunt for Viking relics. Finds include an amazing collection of silver and gold. (S2, ep 2).

Vindolanda: Dr Alice Roberts joins a team of archaeologists as they attempt to restage a Roman cavalry tournament. (S6, ep 3).

The Darkest Age: Did our ancestors believe they were cursed? Professor Alice Roberts explores historic cataclysmic events such as wars and floods to dispel the myths. (3 of 5).

Norman Winchester: Alice tries some eel pie and investigates the origins of modern surgery as she explores the Norman period of British history by examining the town of Winchester. (3 of 6).

Edwardian Cardiff: Alice tells the story of Edwardian Britain by studying the history of Cardiff, Britain's most Edwardian town. (3 of 6).

Portsmouth Age Of Empire: In Portsmouth, Alice Roberts learns about Nelson's dark side, the heat of the battle at Trafalgar, the role of the Navy in the British Empire, and more. (S3, ep 3).

Britannia: A newly discovered town in Devon turns history on its head and there's a shocking find by the Thames - almost 100 baby skeletons. (S2, ep 1).

Invaders: Dr Alice Roberts visits excavations in Orkney and York on the hunt for Viking relics. Finds include an amazing collection of silver and gold. (S2, ep 2).

Vindolanda: Dr Alice Roberts joins a team of archaeologists as they attempt to restage a Roman cavalry tournament. (S6, ep 3).

George IV: The Party King: Professor Alice Roberts dives into the facts surrounding the death of King George IV, looking to shed startling new light on his final few days. (S2, ep 1).

USS Monitor, Clash of the Ironclads: Kevin goes diving in the Atlantic Ocean to explore a battleship that saved the Northern Navy in the American Civil War. (S2, ep 4).