Could Earth's deepest caves hide secret conduits to other worlds? Or harbour evidence that aliens once visited our planet? Experts investigate. (S7, ep 3).

On 8 April 2011, the FBI declassified decades of top secret government documents for the first time. Here, experts examine the possibility of the end of the world. (S1, ep 1).

Could elite groups of power players be plotting the fate of the world? Discover the plans and goals of the world's most secretive organisations. (S1, ep 19).

A fragment of papyrus worth more than its weight in gold appears at auction, spelling the end for a superstar Oxford don. (S1, ep 3).

By May 1940, Europe had been at war for nine months. Yet Britain and France declared war on Germany in September 1939 following Hitler's attack on Poland. (S1, ep 1).

Did a biblical patriarch receive instructions from 200 angels, and was Egypt's most controversial Pharaoh an extraterrestrial being? (S16, ep 1).

Could claims of.

Suggs discovers the history of the British pub and gets stuck into a load of issues. (S1, ep 2).

Explore the men in charge whose rampant egos and misguided belief in their own abilities led to their country making fatal mistakes in the war. (S1, ep 1).

Investigating the disappearance of pilot Frederick Valentich, whose last transmission gives an account of what he experienced. (S1, ep 2).

Born into privilege, Roosevelt strives to make his mark. After reaching New York's halls of power, he finds his greatest adventure yet at the age of 42. (1 of 2).

It's crunch time for Herman Lay who takes a small-time crisps business to a national scale. But a competitor with a new kind of chip is lurking in the shadows. (S2, ep 6).

Dr Alice Roberts reveals the forgotten story of the Roman Army's cavalry as she journeys across Hadrian's Wall. (S6, ep 4).

Examine the story of Queen Tiye, who - over 3,000 years ago - surpassed her rivals and inspired a religious revolution that changed Egypt and the world. (S1, ep 1).

Before the Unabomber, New Yorkers were terrified for 16 years by an attacker who planted bombs across the city. The culprit? An electrician named George Metesky. (S1, ep 5).

Dive deep into the ancient cultures of Egypt, Rome and Nepal and reveal how their people treated their dead. (S1, ep 1).

Adam and Rob serve up their most annoying stings in the history of the Pain Index, chasing them with a tiny fish that has venom to die for. Season finale. (S2, ep 10).

Did a biblical patriarch receive instructions from 200 angels, and was Egypt's most controversial Pharaoh an extraterrestrial being? (S16, ep 1).

Could claims of.

Dr Alice Roberts reveals the forgotten story of the Roman Army's cavalry as she journeys across Hadrian's Wall. (S6, ep 4).

In this episode, Harry Hill explores why the British think they have a better sense of humour than anyone else in the world. (S1, ep 1).

Al and comic Kevin Kropinyeri reveal that Captain Cook was not really a Captain and explore the Aboriginal history of Australian cricket. (S1, ep 4).

Craig Charles joins forces with world-renowned space journalist Sarah Cruddas to investigate some of the most perplexing UFO encounters of recent times. (S1, ep 1).

Nestled in Utah lies a ranch some believe to be a hotbed of strange phenomena. Is it all connected to an alien entity known as the Skinwalker? (S12, ep 21).

Are we being watched by otherworldly beings? Experts make surprising discoveries as they explore the ancient past for evidence of alien overseers. (S7, ep 4).

From the Cold War to the TV set, experts question whether the government is actively controlling what you think, how you act and what you believe. (S1, ep 3).

Experts question if there really is an elite group of powerbrokers trying to rule the planet. And if so, who is behind this New World Order? (S1, ep 4).

A discovery at Memphis International Airport shakes the foundations of one of the US' wealthiest families. (S1, ep 4).

Taking place between August and September 1940, The Battle of Britain remains one of the most famous battles of World War Two. (S1, ep 2).

Ancient astronaut theorist Giorgio Tsoukalos takes a look back at some of the most mysterious yet incredible creatures ever investigated. (S16, ep 2).

Ancient Astronaut theorists suggest that China, with its history of technological advancement and isolationism, could have been the home of alien beings. (S9, ep 10).

Chris Packham is a self-confessed dog obsessive, but he wants to know when animals first became our best friends. (S1, ep 3).

Explore how the seeds of Japan's defeat in 1945 were sown a decade earlier with the occupation of Manchuria in China. (S1, ep 2).

Travel to Queensland's farming country where rain-drenched crops meet the Great Barrier Reef. Is there a link between water and UFO activity? (S1, ep 3).

Roosevelt takes over during one of America's most turbulent periods in history. His desire to fight for the working man reshapes the political landscape. (2 of 2).

A sweet business partnership turns sour, leading Adolphus Green to create one of the most iconic cookie and cracker companies in history. (S2, ep 7).

The team search for remains of the crashed WWII Spitfire and discover parts of the cockpit. (1 of 4).

Cleopatra II's reign was a truly dramatic and grisly tale. She saw her dynasty torn apart by hatred - but also saved it from destruction. (S1, ep 2).

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).

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).

This tourist hotspot is also rumoured to be the epicentre of dark and sinister forces from Native American lore that lure visitors to their deaths. (S2, ep 11).

A demonic truck driver, disembodied voices, nightmarish skinwalkers and a time loop are all reported to exist in Canyonlands National Park. (S2, ep 12).

Ancient astronaut theorist Giorgio Tsoukalos takes a look back at some of the most mysterious yet incredible creatures ever investigated. (S16, ep 2).

Ancient Astronaut theorists suggest that China, with its history of technological advancement and isolationism, could have been the home of alien beings. (S9, ep 10).

The team search for remains of the crashed WWII Spitfire and discover parts of the cockpit. (1 of 4).

Suggs discovers the history of the British pub and gets stuck into a load of issues. (S1, ep 2).

Explore the men in charge whose rampant egos and misguided belief in their own abilities led to their country making fatal mistakes in the war. (S1, ep 1).

Craig Charles joins forces with world-renowned space journalist Sarah Cruddas to investigate some of the most perplexing UFO encounters of recent times. (S1, ep 2).

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).

History's greatest geniuses have often said their ideas came from visions or hallucinations. But could they have come from aliens? Experts investigate. (S7, ep 5).

From flying saucers to killer drones, discover the out-of-this-world technology the US military is using to conquer the globe. (S1, ep 22).

Are governments around the world using weather control to incite the next World War and possibly destroy the planet? A team of experts investigate. (S1, ep 6).

The curator of the J Paul Getty Museum's collection falls into disgrace, brought down by a jet-setting dealer. (S1, ep 5).

Hitler turns his tanks towards Russia. After a succession of devastating victories, the Germans delay and the fierce Russian winter takes a grip. (S1, ep 3).

Discover 10 locations around the world that just might be hiding alien bases, from a cavern beneath the ice in Antarctica to a Chinese lake. (S16, ep 3).

It was mankind's finest hour, the greatest technological achievement of the 20th century - the Apollo 11 mission to the Moon. (S9, ep 11).

Lorraine Kelly explains our constant harking back to Winston Churchill and the part played by Britain in the Allied victory. (S1, ep 4).

Explore how the Axis Powers' ruthless, brutal occupation and exploitation of other countries contributed to their demise. (S1, ep 3).

Explore Melbourne's long history of UFO sightings and hear incredible first-hand accounts from Victoria's locals of otherworldly encounters. (S1, ep 4).

The true story of America's 16th president, starting with his rise up from a poverty-ridden childhood through his determination to leave his mark on the world. (1 of 3).

Competition stirs when a chemist at the Joseph A Campbell company invents a condensed soup that wows the US, and Henry Heinz creates a rival offering. (S2, ep 8).

Alice Roberts shares archaeological discoveries from the west of the UK, including a Roman bath house and a German camp. (2 of 4).

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).

Discover the key role scientific pioneers played in reshaping our solar system. Plus, learn how technology helped humans explore its furthest reaches. (S1, ep 3).

The Royals and the Ripper: With evidence from historians, police officers and experts, discover whether Prince Albert Victor was really Jack the Ripper. (S1, ep 5).

Were these fascinating skulls carved thousands of years ago by an ancient civilisation? Or are they proof that extraterrestrials visited the Aztecs? (S1, ep 10).

Discover 10 locations around the world that just might be hiding alien bases, from a cavern beneath the ice in Antarctica to a Chinese lake. (S16, ep 3).

It was mankind's finest hour, the greatest technological achievement of the 20th century - the Apollo 11 mission to the Moon. (S9, ep 11).

Alice Roberts shares archaeological discoveries from the west of the UK, including a Roman bath house and a German camp. (2 of 4).

Chris Packham is a self-confessed dog obsessive, but he wants to know when animals first became our best friends. (S1, ep 3).

Explore how the seeds of Japan's defeat in 1945 were sown a decade earlier with the occupation of Manchuria in China. (S1, ep 2).

Craig Charles joins forces with world-renowned space journalist Sarah Cruddas to investigate some of the most perplexing UFO encounters of recent times. (S1, ep 3).

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

Experts investigate the mysterious origins of mummification. Could this global practice be proof that aliens once visited Earth? (S7, ep 6).

Animal cloning has been a reality for decades but the disturbing truth is that human cloning may be much closer than you think. (S1, ep 7).

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. (S1, ep 8).

In December 2021, a hedge-fund billionaire and collector is forced to turn over $70 million worth of stolen loot. (S1, ep 6).

The Battle of Stalingrad is considered by many historians to be the turning point in World War Two in Europe, where the German army was bled dry in Russia. (S1, ep 4).

History's greatest geniuses have often said their ideas came from visions or hallucinations. But could they have come from aliens? Experts investigate. (S7, ep 5).

Russia spans over six million square miles of some of the most rugged terrain on Earth, much of which is uninhabited and largely unexplored. (S9, ep 12).

Comedian Reginald D Hunter and Alexei Sayle peel away the thin veneer that disguises Britain's enduring class system. (S1, ep 5).

Victory in war doesn't just require sound military strategy, vital resources and equipment are also critical. Discover how the Axis powers failed in this regard. (S1, ep 4).

Rob and Shelley Hartland believe they live under a.

With the Civil War fully underway, Abraham Lincoln is forced to learn how to manage a military as Commander in Chief - quickly. (2 of 3).

It's crunch time for Herman Lay who takes a small-time crisps business to a national scale. But a competitor with a new kind of chip is lurking in the shadows. (S2, ep 6).

Could new evidence found at the sacrificial alter, El Castillo, shed light on the Maya? And what can science tell us about ancient chemists? (S1, ep 6).

Homicide detective Rod Demery and forensic scientist Turi King investigate an Iron Age victim, so well-preserved that he seems to be peacefully sleeping. (S1, ep 6).

A Death in the Dynasty: The infamous Borgia family were devastated when favourite son Juan was killed in 1497. Can modern experts crack the case and find the killer? (S1, ep 6).

Archaeologists investigate the full story of how the most famous Roman leader, Julius Caesar, rose to power and the battle that took him to the brink of defeat. (1 of 2).

Archaeologists investigate the full story of how the most famous Roman leader, Julius Caesar, rose to power and the battle that took him to the brink of defeat. (2 of 2).

From a meeting in Texas that left onlookers with mysterious injuries to strange cattle mutilations, discover history's terrifying encounters. (S16, ep 4).

Russia spans over six million square miles of some of the most rugged terrain on Earth, much of which is uninhabited and largely unexplored. (S9, ep 12).

Could new evidence found at the sacrificial alter, El Castillo, shed light on the Maya? And what can science tell us about ancient chemists? (S1, ep 6).

Lorraine Kelly explains our constant harking back to Winston Churchill and the part played by Britain in the Allied victory. (S1, ep 4).

Explore how the Axis Powers' ruthless, brutal occupation and exploitation of other countries contributed to their demise. (S1, ep 3).

Craig Charles joins forces with world-renowned space journalist Sarah Cruddas to investigate some of the most perplexing UFO encounters of recent times. (S1, ep 4).

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).

Could extraterrestrials have left us clues to the universe's mysteries? Experts investigate cryptic puzzles that might have been left by ancient aliens. (S7, ep 7).

Every culture and religion on the planet believes that an evil one will usher in the end of days. But who is this Anti-Christ? And how can we hope to stop him? (S1, ep 9).

We rely on machines for virtually every aspect of modern life. But is technology going too far, too fast? And will humans suffer the consequences? (S1, ep 10).

Douglas Latchford was the go-to expert in Khmer antiquities. But an investigation sees his world crumble. (S1, ep 7).

The Western Allies of World War II launched the largest amphibious invasion in history when they assaulted Normandy, on 6 June 1944. (S1, ep 5).

From glyphs in the Peruvian desert to spiral petroglyphs embedded with advanced maths, explore some of the world's most intriguing symbols and codes. (S16, ep 5).

The US military has denied that the 1947 Roswell crash was anything other than a weather balloon, but FBI files include a memo that indicate otherwise. (S9, ep 13).

Liza Tarbuck tackles the national obsession with all things weather-related. Season finale. (S1, ep 6).

In our final episode, we examine how each Axis Power had troubles on their own home front, leading to disaster in the final days of the war. (S1, ep 5).

Visit Australia's vast expanses, where farmers have been finding mutilated cattle. Plus, meet Phil Tindale who believes he witnessed two UFOs in combat. (S1, ep 6).

As the Civil War rages on and the casualties build, Abraham Lincoln looks to the future and seeks a general who can end it once and for all. (3 of 3).

A sweet business partnership turns sour, leading Adolphus Green to create one of the most iconic cookie and cracker companies in history. (S2, ep 7).

Finds from the East include a monument as old as Stonehenge and some disturbing Roman burials. (3 of 4).

In 218 BC, a Carthaginian army set out to challenge the might of Rome. The route chosen by Hannibal has been disputed ever since and researchers believe they could now have the answer.

Four US Air Force reservists are pursued by odd lights. Constable Alan Godfrey loses consciousness when he investigates a strange disruption in West Yorkshire. (S2, ep 11).

A hitchhiker is terrified when lights appear to attack him. A sighting in France becomes one of the most investigated cases in UFO history. (S2, ep 12).

Homicide detective Rod Demery and forensic scientist Turi King examine a murder victim dated to the time of the Picts, unearthed in a remote sea cave in Scotland. (S1, ep 1).

With a double indemnity insurance policy on her husband's life and a lover as an accomplice, what can go wrong with Ruthie Brown's plan to stage a murder? (S1, ep 2).

From glyphs in the Peruvian desert to spiral petroglyphs embedded with advanced maths, explore some of the world's most intriguing symbols and codes. (S16, ep 5).

The US military has denied that the 1947 Roswell crash was anything other than a weather balloon, but FBI files include a memo that indicate otherwise. (S9, ep 13).

Finds from the East include a monument as old as Stonehenge and some disturbing Roman burials. (3 of 4).

Comedian Reginald D Hunter and Alexei Sayle peel away the thin veneer that disguises Britain's enduring class system. (S1, ep 5).

Victory in war doesn't just require sound military strategy, vital resources and equipment are also critical. Discover how the Axis powers failed in this regard. (S1, ep 4).

Craig Charles joins forces with world-renowned space journalist Sarah Cruddas to investigate some of the most perplexing UFO encounters of recent times. (S1, ep 5).

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? (S6, ep 4).

Experts investigate remote ruins, mysterious caves and legendary mountain portals. Could these alleged stargates have brought ancient aliens to Earth? (S6, ep 5).

Experts comb history for evidence of children with strange abilities and great knowledge. Could these young people have been born from ancient aliens? (S6, ep 6).

What was it like to face a Napoleonic cavalry charge? Find out as the cannon, grenade and Brown Bess musket go under the microscope. (S1, ep 6).

New weapons with immense force define the wars of the 20th century as international experts test the catastrophic effects of destructive weaponry. (S1, ep 6).

Journey back to 885, when a small army in Paris repelled the Vikings, who had ravaged everything in their path while travelling up the Seine. (S1, ep 1).

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).

Could extraterrestrials have left us clues to the universe's mysteries? Experts investigate cryptic puzzles that might have been left by ancient aliens. (S7, ep 7).

On the outskirts of Bouerat Harbor in Libya, a small group of British special forces prepare to destroy a crucial German fuel depot. (S1, ep 2).

Dr Alice Roberts reveals the forgotten story of the Roman Army's cavalry as she journeys across Hadrian's Wall. (S6, ep 4).

Alice Roberts shares archaeological discoveries from the west of the UK, including a Roman bath house and a German camp. (2 of 4).

Investigate the haunting history of the town that time forgot, unexplained circles in the New Mexico desert and a possible clue to extra-terrestrial life in the Arctic. (S5, ep 1).

Investigate alien-like metal monsters coming from the sea, a war between 30 million crabs and an army of killer ants, and the white wall of death from which there is no escape. (S5, ep 2).

The four-part series charting the life story of Winston Churchill begins with a look at the early beginnings of his career. (1 of 4).

When a Boeing 777 crashes into San Francisco Airport with no warning, engineers race to figure out what could have caused such a disaster. (6 of 6).

The Laginas and Matty Blake help treasure hunters Donna McCauley and Gypsy Jewels search two hideouts in Texas for millions in stolen gold. (S2, ep 3).

The Forgotten Queen: Professor Alice Roberts delves into the life and death of Anne, Queen of England from 1702-1714, who shockingly endured 17 failed pregnancies. (S2, ep 4).

The film explores the roots of Adolf Hitler and traces the story of his life from the town of his birth to his final days. (S1, ep 1).

Largely due to the SS which he led, Himmler, the unsuspecting killer, was the most powerful of all of Hitler's men. (S1, ep 2).

A look at the accounts of modern-day alien abductees. Plus, could the bizarre Paracas skulls discovered by Julio Tello be of extraterrestrial origin? (S8, ep 5).

Ancient Alien theorists explore world mythology as they investigate whether extraterrestrials could be responsible for our existence. (S8, ep 6).

Bil investigates the rivalries of Alexander Hamilton and Aaron Burr, the Hatfields and McCoys, and the OK Corral. (S1, ep 5).

Bil separates fact from fiction surrounding the Bowie knife. Also, he tries his hand at outshooting Abe Lincoln. (S1, ep 6).

Experts question whether the truth of our alien past could be buried in areas that, due to warfare or instability, are off-limits to exploration. (S8, ep 10).

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

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

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).

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).

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).

The Ancient Discoveries team recreate the kite bomb, a devastating medieval siege weapon, and test the world's first parachute from 6,000 feet.

Explore the history of the Presidency. Here, how some exerted power over the economy and the impact of those actions. (3 of 6).

Explore the history of the Presidency. Here, a look at multiple flashpoints in the nation's history, and the ways Presidents tackle extremism. (4 of 6).

Cleopatra II's reign was a truly dramatic and grisly tale. She saw her dynasty torn apart by hatred - but also saved it from destruction. (S1, ep 2).

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. (S1, ep 3).

The team search for remains of the crashed WWII Spitfire and discover parts of the cockpit. (1 of 4).

Finds from the East include a monument as old as Stonehenge and some disturbing Roman burials. (3 of 4).

William Shatner embarks on his quest for answers to the unexplainable - from sudden disappearances, to evil possession. (S3, ep 1).

William Shatner continues his quest to find answers to the unexplainable, this week embarking on an ambitious search. (S3, ep 3).

A look at the Petrozavodsk incident of 1977 - one of the key moments that helped to determine the official Soviet response to the UFO phenomenon. (S1, ep 5).

This July, 75 years have passed since the Roswell incident. This two-part documentary revisits the alleged crash of an extra terrestrial craft at Roswell, New Mexico in 1947. (2 of 2).

Experts investigate the US government's experiments into teleportation. They also dig into strange happenings at Mount Shasta and Skinwalker ranch. (S1, ep 3).

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? (S1, ep 3).

The story of Hitler's dysfunctional home life. His parents were closely related, and in his adult years, he was rumoured to have engaged in incest himself. (3 of 4).

Amanda explores the feisty affair between Henry VIII and Anne Boleyn, showing how her sexual control ended in disaster. Meanwhile, Dan learns to joust. (S1, ep 2).

From a meeting in Texas that left onlookers with mysterious injuries to strange cattle mutilations, discover history's terrifying encounters. (S16, ep 4).

It was mankind's finest hour, the greatest technological achievement of the 20th century - the Apollo 11 mission to the Moon. (S9, ep 11).

James Nesbitt heads to London to shed light on the devastating 1987 King's Cross fire, which killed 31 people and injured 100. (S1, ep 5).

James Nesbitt examines the Grenfell Tower fire. On 14 June 2017, the 24-storey apartment block went up in flames leading to 71 deaths. (S1, ep 6).

Russia spans over six million square miles of some of the most rugged terrain on Earth, much of which is uninhabited and largely unexplored. (S9, ep 12).

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).

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? (S7, ep 8).

Discover the locations of stargate portals around the world. Thought to be doorways to wormholes in time, who is battling to open them and why? (S1, ep 11).

Discover the secrets surrounding the ten biggest and most mysterious conspiracies in history, including the goings-on at Area 51. (S1, ep 12).

Hitler's Museum of Stolen Art: In 2012, the search of a recluse's Munich flat uncovers lost art linked to his father, a man known as Hitler's art dealer. (S1, ep 8).

An insight into secret Nazi attempts to turn the tide of war as Berlin crumbled. (S1, ep 6).

Explore the most devastating disasters ever documented that may have an otherworldly connection, from a flying monster to a deadly virus. (S16, ep 6).

Thousands of people from every part of the world have reported being abducted by aliens, including even a world leader - President Kiran Ilyumzhinov. (S9, ep 15).

The story of a deadly war that intertwines Germany, Poland, Japan, Italy and Spain, and the remorseless development of weapons and bombers. (1 of 6).

The story of a deadly war that intertwines Germany, Poland, Japan, Italy and Spain, and the remorseless development of weapons and bombers. (2 of 6).

Craig Charles joins forces with world-renowned space journalist Sarah Cruddas to investigate some of the most perplexing UFO encounters of recent times. (S1, ep 1).

Explore the history of the Presidency, beginning with racial tensions. Some have taken steps towards perfect union, others haven't. (1 of 6).

From ancient Egypt - when the Pharaohs ruled - to Anglo-Saxon England, uncover the origins of the curses surrounding the Bust of Nefertiti, the Staffordshire Hoard and more. (S1, ep 1).

The industrial revolution changed it all when it came to cannons as they evolved from wholly inaccurate and immobile to deadly killing machines. (3 of 3).

Alice Roberts follows archaeologists as they excavate Iron Age Britain's most spectacular grave - a Yorkshire chariot burial. (4 of 4).

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).

The strange story of Michael Molly shows how some people just won't die when you want them to. (S1, ep 6).

Explore another three ancient cultures and their relationship with death - Zoroastrians, Mongolia and the Bo. (S1, ep 2).

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).

Explore the most devastating disasters ever documented that may have an otherworldly connection, from a flying monster to a deadly virus. (S16, ep 6).

Thousands of people from every part of the world have reported being abducted by aliens, including even a world leader - President Kiran Ilyumzhinov. (S9, ep 15).

Alice Roberts follows archaeologists as they excavate Iron Age Britain's most spectacular grave - a Yorkshire chariot burial. (4 of 4).

Liza Tarbuck tackles the national obsession with all things weather-related. Season finale. (S1, ep 6).

In our final episode, we examine how each Axis Power had troubles on their own home front, leading to disaster in the final days of the war. (S1, ep 5).

Craig Charles joins forces with world-renowned space journalist Sarah Cruddas to investigate some of the most perplexing UFO encounters of recent times. (S1, ep 6).

An exploration of the possibility that The Book of Enoch was stricken from the Bible because it documents humanity's extraterrestrial origins. (S12, ep 37).

Experts explore the disappearance of civilisations throughout time and across the globe. Could clues left in their wake point to an otherwordly explanation? (S7, ep 9).

A look at the CIA's rumoured investment in psychological operations. Could there be an army of remote viewers watching American citizens today? (S1, ep 13).

On 8 April 2011, the FBI declassified decades of top secret government documents for the first time. Here, experts examine the possibility of the end of the world. (S1, ep 1).

Explore the history of the Presidency, beginning with racial tensions. Some have taken steps towards perfect union, others haven't. (1 of 6).

An insight into the Germans' perspective of events as they invaded and battled to the death, featuring expert analysis. (S1, ep 7).

When the ancient Sumerians built their civilisation, they credited their gods - but were these powerful beings actually extraterrestrial visitors? (S16, ep 7).

Of all the Hindu gods, none is more important than Shiva, the great destroyer. Could the deity have been the leader of an extraterrestrial race? (S9, ep 16).

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).

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. (S1, ep 5).

Craig Charles joins forces with world-renowned space journalist Sarah Cruddas to investigate some of the most perplexing UFO encounters of recent times. (S1, ep 2).

Explore the history of the presidents who made an impact through imagining what we could be, not just what we are. (2 of 6).

From medieval Britain to the Northwest Passage in the Arctic, uncover the origins of the curses surrounding the Stone of Destiny, Landseer's Man Proposes, God Disposes and more. (S1, ep 2).

Timothy Vail and Timothy Morgan were murderers incarcerated at Elmira State Prison. Vail wanted to escape, so he engaged Morgan in his plan to flee. (S1, ep 7).

Dr Alice Roberts explores a secret location in the Cotswolds, which gives up a very precious and fragile artefact. (1 of 4).

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).

Uncovering the mystery of an ancient stone object with unique markings and a cat mummy with no cat inside. (S2, ep 1).

Delve into medieval Italian knights, leaders and the armour they wore. (S3, ep 2).

A grim discovery in a Swedish lake reveals shocking ancient practices. Meanwhile, in the Canadian Arctic, the fossil of a previously unknown mammal is found. (S3, ep 1).

When the ancient Sumerians built their civilisation, they credited their gods - but were these powerful beings actually extraterrestrial visitors? (S16, ep 7).

Of all the Hindu gods, none is more important than Shiva, the great destroyer. Could the deity have been the leader of an extraterrestrial race? (S9, ep 16).

Dr Alice Roberts explores a secret location in the Cotswolds, which gives up a very precious and fragile artefact. (1 of 4).

The story of a deadly war that intertwines Germany, Poland, Japan, Italy and Spain, and the remorseless development of weapons and bombers. (1 of 6).

The story of a deadly war that intertwines Germany, Poland, Japan, Italy and Spain, and the remorseless development of weapons and bombers. (2 of 6).

Craig Charles joins forces with world-renowned space journalist Sarah Cruddas to investigate some of the most perplexing UFO encounters of recent times. (S1, ep 7).

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).

Experts investigate ancient man's apparent obsession with building pyramids, and whether extra-terrestrials may have helped with their construction. (S7, ep 11).

Startling evidence suggests the US military has been under attack from aliens for 50 years. Could they be keeping such a huge secret from the public? (S1, ep 15).

Could the ability to travel through time be real? Experts unseal new evidence suggesting this phenomenon of science fiction might not be as far-fetched as it seems. (S1, ep 16).

Explore the history of the presidents who made an impact through imagining what we could be, not just what we are. (2 of 6).

An insight into the Germans' perspective of events as they invaded Italy and battled to the death, featuring expert analysis. (S1, ep 8).

Home to mysterious stone circles, stories of strange beings and reported sightings, Scotland has always been an epicentre of otherworldly phenomena. (S16, ep 8).

Examining otherworldly artefacts as physical evidence of extraterrestrial visits, including a strange metal sphere that defies the laws of physics. (S10, ep 2).

Controversial royal Prince George perished in a plane crash in 1942. Was a pilot error or sabotage to blame? (S1, ep 6).

In 1944, two Wellington bombers collided in mid-air over Northants. Garth Barnard investigates why 13 young trainees perished. (S1, ep 4).

Craig Charles joins forces with world-renowned space journalist Sarah Cruddas to investigate some of the most perplexing UFO encounters of recent times. (S1, ep 3).

Explore the history of the Presidency. Here, how some exerted power over the economy and the impact of those actions. (3 of 6).

From an Anglo-Saxon Burial ground to the caves of the Judean Desert and Siberia in the Ice Age, uncover the origins of the curses surrounding Sutton Hoo, Lyuba and more.

A look into the many prison escapes of James Earl Ray, the man who assassinated Martin Luther King. (S1, ep 8).

The archaeologists get more than they bargained for while exploring the childhood home of Lady Jane Grey. (2 of 4).

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).

The story behind the breath-taking temple complex, which is located in Cambodia and is the largest religious monument in the world.

Tragedy or Treason: Explore the mystery surrounding Prince George's death in 1942 - does the royal family's ambivalence prove that his death was no accident? (S1, ep 3).