Ancient alien experts investigate the mysterious and fearsome Norse Gods. Were they divine? Or could the all-powerful Vikings have been guided by aliens.

Documentary examining the unsolved murder of TV presenter and newsreader Jill Dando, who was shot outside her house in Fulham, London, in 1999.

Investigation into Jeremy Bamber's murder of his family in Essex in 1985. Sentenced for life, he still maintains he is innocent. Is the right person behind bars.

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

Alice Roberts and Matt Williams present more outstanding archaeology. In the east of Britain, sites include Must Farm, Colchester, Oakington, Lyminge and Silchester.

Dr Alice Roberts discovers what Britain was like before the Romans as she examines fascinating finds from the Bronze and Iron Ages.

France: Frenchman Fred Sirieix joins Al Murray to break down what really happened during the Napoleonic wars. Did Britain really win the battle of Waterloo.

A look at the controversial ancient alien theories of Erich von Däniken, whose books have sold over 65 million copies worldwide.

Ancient alien experts investigate the mysterious and fearsome Norse Gods. Were they divine? Or could the all-powerful Vikings have been guided by aliens.

The Invasion Of Britain: It is 47 AD. Emperor Claudius is considered a village idiot and can only hang onto his throne by waging a spectacular conquest. He chooses Britannia.

Dacian Wars: As expansive military campaigns and raids by Dacian tribes begin to test the Roman Empire's finances, pressure builds on Emperor Domitian.

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

A shocking look at the murder of eight-year-old Victoria Climbie, who was tortured and killed by her guardians in North London in 2000.

Enslaved by the Romans, Carpophorus gets trained to fight beasts in the Colosseum for the public's amusement.

Discover treasures and ancient manuscripts hidden in mysterious chambers, tunnels, caves and burial sites.

From massive asteroids and bursts of radiation, are we prepared for the calamity that may be coming our way.

A look at the controversial ancient alien theories of Erich von Däniken, whose books have sold over 65 million copies worldwide.

Ancient alien experts investigate the mysterious and fearsome Norse Gods. Were they divine? Or could the all-powerful Vikings have been guided by aliens.

A shocking look at the murder of eight-year-old Victoria Climbie, who was tortured and killed by her guardians in North London in 2000.

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.

A chronological telling of the dramatic D-Day story, focusing on the vessels that made the landings possible.

Revisiting the bloody British uprising against the Romans, presenter Karl Ude-Martinez tests out swords, spears and armour.

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

Experts investigate reports of bird-like figures that practised advanced medical science in ancient times. Could they have been extra-terrestrial.

Could ancient rulers have had otherworldly links? Experts examine whether history's most powerful leaders were 'chosen' and guided by aliens.

In an emotional tribute, witnesses and victims' relatives look back on the murder of 16 children and a teacher at Dunblane Primary School in March 1996.

The parents of innocent 11-year-old Rhys Jones, shot on his way home from football club in Liverpool 2007, speak about the harrowing day when they lost their son.

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.

Alice Roberts learns more about mankind's Stone Age ancestors, and travels to Jersey to meet a team hoping to shed new light on the Neanderthals.

Dr Alice Roberts visits excavations in Orkney and York on the hunt for Viking relics. Finds include an amazing collection of silver and gold.

Experts investigate reports of bird-like figures that practised advanced medical science in ancient times. Could they have been extra-terrestrial.

Could ancient rulers have had otherworldly links? Experts examine whether history's most powerful leaders were 'chosen' and guided by aliens.

Rebellion And Betrayal: Marcus Aurelius inherits a rapidly growing Roman Empire, embroiled in a war on two fronts. But can he bring peace and prosperity back to the Empire.

Wrath Of The Gods: With the civil war raging on, there's a new challenge ahead for Rome: the rise of the new religion of Christianity. The Empire is invaded by the Goths.

Just one of Rome's emperors is willing to step out of the Imperial Box into the arena and his name is Commodus, a man with a reputation for making enemies.

Survivors, victims' relatives and former detectives reflect on the Real IRA car bomb that killed 29 people in Omagh, Northern Ireland in 1998.

Emperor Trajan throws his great games of AD 107 and the crowd is treated to the rare spectacle of female gladiators.

Uncover haunting factors and new evidence, possibly leading to fresh verdicts for these enigmatic men.

Theories surrounding the death of Hermann, who managed to cheat the hangman by taking a cyanide capsule and his relationship with Lt. Colonel Douglas M Kelley.

Experts investigate reports of bird-like figures that practised advanced medical science in ancient times. Could they have been extra-terrestrial.

Could ancient rulers have had otherworldly links? Experts examine whether history's most powerful leaders were 'chosen' and guided by aliens.

Survivors, victims' relatives and former detectives reflect on the Real IRA car bomb that killed 29 people in Omagh, Northern Ireland in 1998.

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

Looking at early metal warships, and how HMS Rattler's screw propeller in 1845 would lead to the revolutionary HMS Dreadnought in the 20th Century.

Five Bronze Age bodies found in a Kent pit. One old woman is posed pointing at something. The team investigates what and why.

The River Hunters head to the River Lochy in search for evidence of the clashing Scottish clans embroiled in the 17th Century civil war.

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

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

Investigation into Jeremy Bamber's murder of his family in Essex in 1985. Sentenced for life, he still maintains he is innocent. Is the right person behind bars.

The story of one of the world's most effective war machines: The Viking longship. They were elegant, versatile and feared.

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

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

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

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 visit sites in the west of Britain, including one uncovering the rituals of Stonehenge.

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.

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

A look at the tactics employed to pass strategically important ships under the nose of the enemy, and the use of intelligence to carry out naval attacks.

Families of victims and former friends open up about Stephen Griffiths, the Bradford killer who was found guilty of murdering three women in 2010.

From skyscrapers like One World Trade Centre to impenetrable vaults like Fort Knox, humanity's strongest structures were engineered to defy disaster.

Was a UFO tracking an American fighter plane? The team of experts examines the evidence to find the truth.

A woman survives being sucked into a tornado.

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

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

Families of victims and former friends open up about Stephen Griffiths, the Bradford killer who was found guilty of murdering three women in 2010.

Dr Alice Roberts visits excavations in Orkney and York on the hunt for Viking relics. Finds include an amazing collection of silver and gold.

Dr Alice Roberts discovers what Britain was like before the Romans as she examines fascinating finds from the Bronze and Iron Ages.

Alice Roberts learns more about mankind's Stone Age ancestors, and travels to Jersey to meet a team hoping to shed new light on the Neanderthals.

Scott and Sheldon travel to the United Kingdom to purchase a Wild West collection with a Canadian twist.

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

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

The parents of innocent 11-year-old Rhys Jones, shot on his way home from football club in Liverpool 2007, speak about the harrowing day when they lost their son.

Explore how ships evaded detection post-WW2 with radar, adopting shocking methods to remain hidden.

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.

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

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

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

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

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

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.

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

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

Denise Fergus reflects on the murder of her son. Two-year-old James Bulger was tortured and killed by 10-year-olds Jon Venables and Robert Thompson in 1993.

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.

From massive asteroids and bursts of radiation, are we prepared for the calamity that may be coming our way.

The tomb of Qin Shi Huang, the first emperor of China, remains one of the most famous and secretive archaeological sites in the world.

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

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

Denise Fergus reflects on the murder of her son. Two-year-old James Bulger was tortured and killed by 10-year-olds Jon Venables and Robert Thompson in 1993.

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

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.

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.

The Pickers meet a World War II collector who is reluctant to sell and a fellow picker reveals his first-class collection.

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

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

Documentary examining the fatal stabbing of 21-year-old motorist Stephen Cameron during an altercation on the M25 in 1996.

Explore the human errors that condemned great ships to a tragic end, including the Vasa, a 17th century combat ship that sank on her maiden voyage.

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.

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

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

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

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

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

Experts investigate remote ruins, mysterious caves and legendary mountain portals. Could these alleged stargates have brought ancient aliens to Earth.

Experts comb history for evidence of children with strange abilities and great knowledge. Could these young people have been born from ancient aliens.

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

A look at the murder of 18-year-old Sally Anne Bowman, who was stabbed in Croydon in 2005. With interviews with her family and detectives who solved the case.

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.

Explore the stories of the leaders and key figures who have defined periods of history and whose mythologies often outlive their influence.

When Pharaoh Ptolemy IV confronts Antiochos the Great at Raphia, that's 100,000 men from all Mediterranean clash with dramatic consequences.

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

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

A look at the murder of 18-year-old Sally Anne Bowman, who was stabbed in Croydon in 2005. With interviews with her family and detectives who solved the case.

Experts search ancient accounts of magic for evidence suggesting that the wizards and witches of yesteryear were given otherworldly knowledge by aliens.

Theorists search ancient texts for proof that extraterrestrials influenced the miraculous advances made by the Sumerian civilisation 5,000 years ago.

Experts explore the controversy surrounding the ancient Crystal Skulls, asking what powers might be unleashed if all 13 artefacts were brought together.

The Canadian Pickers travel the country searching for hidden antiques and collectables. They meet collectors, strike deals and turn forgotten finds into profit.

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

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

A shocking look at the murder of eight-year-old Victoria Climbie, who was tortured and killed by her guardians in North London in 2000.

Discover the incredible story of USS Laffey, the WW2 destroyer that would come to be known as 'the ship that would not die'.

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

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

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

A strange structure shaped like a giant shark might point the way to a lost civilisation's Fountain of Youth.

A mysterious structure in Africa that resembles Stonehenge is said to be the resting place of a mythical giant.

A mysterious Stonehenge-like structure in Russia might have links to the Nazis. Experts uncover clues to a mega-tsunami with the power to devastate the United States.

When a great white shark is killed, experts suspect a mysterious ocean monster and strange markings in the desert might be a tribute to an ancient spider god.

A strange mountain in Egypt sparks an investigation into Cleopatra's gems and the tomb of Alexander the Great.

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

A hard-hitting look at the murder of Rachel Nickell, who was sexually assaulted and murdered in front of her two-year-old son on Wimbledon Common in 1992.

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

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.

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.

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

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

A hard-hitting look at the murder of Rachel Nickell, who was sexually assaulted and murdered in front of her two-year-old son on Wimbledon Common in 1992.

When a mysterious circular stone structure is discovered in Scotland, experts investigate whether it's the fabled Round Table of King Arthur.

Experts investigate tunnels rumoured to be the hiding place of lost royal treasure, they find evidence of human sacrifice for Viking god Odin.

Evidence might finally identify the hiding place of the billion-dollar Nazi gold train and blood-red river in Siberia points to catastrophic pollution.

Mike and Avery recover a valuable abandoned Volkswagen, while threats from the authorities force Mike to make a surprising decision.

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

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

Survivors, victims' relatives and former detectives reflect on the Real IRA car bomb that killed 29 people in Omagh, Northern Ireland in 1998.

Naval battles aren't always the dogfights of popular imagination. Sometimes, the real fight relied on secrets and subterfuge.

Germany's Frontline Bomber: A look at one of the most-recognised German aircrafts of WWII and how it became a guinea pig for future bombers.

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

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

Discover some of the combat ships that played key parts in river warfare, from Harriet Tubman's successful gunboat to the high-speed PBRs of Vietnam.

Many fearless captains have led their ships into battle over the centuries, so celebrate some of history's greatest maritime heroes.

Combat ships are built to survive, but some blasts are simply too powerful. Dive in and revisit some of the most spectacular explosions in maritime history.

Celebrate the heroes who often found themselves fighting two battles - one against the enemy and one against racism within their own ranks.

Thanks to the heroic acts of sailors, America scored a stunning win in the battle of Guadalcanal, loosening Japan's mighty grip on the Pacific.

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

On the 20th anniversary of his death, the family of Stephen Lawrence reflect on his tragic murder in 1993, as well as their lengthy fight for justice.

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

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.

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

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

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

On the 20th anniversary of his death, the family of Stephen Lawrence reflect on his tragic murder in 1993, as well as their lengthy fight for justice.

Taking place 110 miles behind enemy lines in a treacherous harbour, the Korean War's Battle of Incheon was one of the riskiest assaults in history.

Follow the major operations that have taken place in the Persian Gulf - from Earnest Will to Desert Storm - and examine the combat vessels from both sides.

Uncover the truth behind some of history's most mysterious sinkings, from a sunken World War I cruiser to a British Destroyer from the Falklands War.

Avery gambles on completing a build from his past as authorities crack down on his vehicle-filled property, while Mike finishes his '55 LaFrance fire truck.

Theorists search ancient texts for proof that extraterrestrials influenced the miraculous advances made by the Sumerian civilisation 5,000 years ago.

Experts investigate mysterious relics that have been revered by cultures for millennia. Could these sacred items truly hold divine or otherworldly power.

Families of victims and former friends open up about Stephen Griffiths, the Bradford killer who was found guilty of murdering three women in 2010.

A look at the murder of 18-year-old Sally Anne Bowman, who was stabbed in Croydon in 2005. With interviews with her family and detectives who solved the case.

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

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

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

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

Theorists search ancient texts for proof that extraterrestrials influenced the miraculous advances made by the Sumerian civilisation 5,000 years ago.

Experts investigate mysterious relics that have been revered by cultures for millennia. Could these sacred items truly hold divine or otherworldly power.

The Soldiers' Emperor: With an empire ripped apart by civil war, Rome welcomes an extraordinary new emperor: Aurelian, rising from the rank of soldier to fight for his city.

Constantine the Great: A new emperor with a huge vision and undeniable power slowly gains control of the entire Roman empire following the end of the civil wars.

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

A look at Raoul Moat's shooting spree in Northumberland during the summer of 2010, the huge manhunt that followed and the aftermath of his attacks.

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

A deadly discovery hiding under one of America's most national parks, a Nazi era weapon sunk off the coast of New Jersey.

Search for the Next Frontier: What will humans find when reaching other planets? And just how dangerous might it be.

Theorists search ancient texts for proof that extraterrestrials influenced the miraculous advances made by the Sumerian civilisation 5,000 years ago.

Experts investigate mysterious relics that have been revered by cultures for millennia. Could these sacred items truly hold divine or otherworldly power.

A look at Raoul Moat's shooting spree in Northumberland during the summer of 2010, the huge manhunt that followed and the aftermath of his attacks.

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

From tests in the River Thames, to the German's deadly U-boat attacks in World War II, this episode explores the silent threat of submarines.

What was it like to face a Napoleonic cavalry charge? Find out as the cannon, grenade and Brown Bess musket go under the microscope.

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

Experts investigate the power of the number three in history, science and astronomy. Could its huge significance bear links to extraterrestrial life.

Experts explore the controversy surrounding the ancient Crystal Skulls, asking what powers might be unleashed if all 13 artefacts were brought together.

Denise Fergus reflects on the murder of her son. Two-year-old James Bulger was tortured and killed by 10-year-olds Jon Venables and Robert Thompson in 1993.

A hard-hitting look at the murder of Rachel Nickell, who was sexually assaulted and murdered in front of her two-year-old son on Wimbledon Common in 1992.

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.

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.

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

Experts investigate the power of the number three in history, science and astronomy. Could its huge significance bear links to extraterrestrial life.

Experts explore the controversy surrounding the ancient Crystal Skulls, asking what powers might be unleashed if all 13 artefacts were brought together.

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.

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.

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

The wife of Garry Newlove, who was beaten to death outside his home in Cheshire in 2007, looks back at the night of her husband's murder.

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

Uncover haunting factors and new evidence, possibly leading to fresh verdicts for these enigmatic men.

The theories, conspiracies and facts relating to Rudolf Hess's dramatic flight to Scotland in 1941 and his subsequent death in Spandau prison.

Experts investigate the power of the number three in history, science and astronomy. Could its huge significance bear links to extraterrestrial life.

Experts explore the controversy surrounding the ancient Crystal Skulls, asking what powers might be unleashed if all 13 artefacts were brought together.

The wife of Garry Newlove, who was beaten to death outside his home in Cheshire in 2007, looks back at the night of her husband's murder.

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.

Exploring the Cold War vessels that played pivotal roles in events such as the blockade of Cuba and the Vietnam war.

Tori investigate the remains of children and teenagers found in Leeds city centre. The team reveals what life was like for the children of the Industrial Revolution.

The River Hunters head to Canterbury, where they're granted special permission to undertake the first official search of this section of the River Stour.

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

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

A look at the murder of 18-year-old Sally Anne Bowman, who was stabbed in Croydon in 2005. With interviews with her family and detectives who solved the case.

The 16th century witnessed a revolution in combat ship design and saw the birth of two legendary sea captains.

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

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

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

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

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

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

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

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

The brother of millionaire Christopher Foster joins those trying to understand why he killed his wife and daughter in Shropshire in 2008.

Hidden dangers once held at bay by humans erupt with force, from everyday objects ready to explode to chemical plants and locust plagues.

Is a mysterious object moving through the sky a UFO disguised as a cloud.

A pilot activates his ejector seat at the last second during a rocky landing.