Sea Lions, Voynich Manuscript, Cocaine Mummies: A look at a mysterious medieval manuscript and Egyptian mummies containing cocaine from Peru. (S1, ep 3).

Rubber Duck UFO, Grim Reaper Ice Sculpture and I Killed Bigfoot: Investigate footage of a UFO resembling a rubber duck, a ghoulish ice sculpture and Bigfoot's supposed killer. (S3, ep 2).

Alien Power Plants: Ancient alien theorists ask whether the Greeks and Egyptians understood electricity. Could extraterrestrials have introduced them to such technology? (S4, ep 10).

The Da Vinci Conspiracy: Experts scrutinise the paintings, journals and technical drawings of Leonardo Da Vinci. Could they hide evidence of extra-terrestrial beings? (S4, ep 11).

The First Metal Warships: 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. (S1, ep 4).

Wonder(Less) Weapons: Hitler and Goebbels promote wonder weapons as the path to victory as Germany starts to feel overstretched during World War II. (2 of 6).

Embark on an eye-opening journey as experts investigate the startling mysteries captured by satellites orbiting the Earth: from hidden worlds to unexplainable natural phenomena. (S4, ep 13).

Alien Power Plants: Ancient alien theorists ask whether the Greeks and Egyptians understood electricity. Could extraterrestrials have introduced them to such technology? (S4, ep 10).

The Da Vinci Conspiracy: Experts scrutinise the paintings, journals and technical drawings of Leonardo Da Vinci. Could they hide evidence of extra-terrestrial beings? (S4, ep 11).

Stewart Sturling: Alice explores the story of Stewart Britain by visiting the home of the Scottish royals who eventually took the English throne in 1603 and created Great Britain. (6 of 6).

Arundel: Dan explores the history of the Earls of Arundel, how knights fought in the Hundred Years' War and how the Castle would have prepared for Queen Victoria's 1846 visit. (6 of 6).

Wonder(Less) Weapons: Hitler and Goebbels promote wonder weapons as the path to victory as Germany starts to feel overstretched during World War II. (2 of 6).

Mighty Wooden Warships: We learn about life on a Tudor ship from objects found on the Mary Rose, while on HMS Victory we learn the battle-winning tactics of Admiral Nelson. (S1, ep 9).

Aswang, Crashed on Mars, and Giant Wolves: Explore the truth behind sightings of a dreaded Filipino creature, a possible landing site on Mars and a big bad wolf in Canada. (S3, ep 3).

Embark on an eye-opening journey as experts investigate the startling mysteries captured by satellites orbiting the Earth: from hidden worlds to unexplainable natural phenomena. (S4, ep 19).

Chicago: 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).

Power Couples: Three of the most extravagant and expensive weddings in history are profiled. Lavish and luxurious was the only way to celebrate for these big spenders. (S1, ep 9).

Holy Rollers: Meet the ancients who bankrolled the construction of massive churches and temples in a desperate attempt to buy their way into heaven. (S1, ep 10).

New. Special Ops and Saboteur: A look at some of the most famous missions in modern history. Special operations require skilful people, but elite technology plays a part too.

Dark Forces: From Rasputin to the Nazis, many people throughout history are thought to have tapped into dark powers. Could they have been connecting with extraterrestrials? (S8, ep 4).

Croc Mummies and the Lost City of Avaris: The remains of 10 ancient crocodiles are excavated on the bank of the Nile, while a four-thousand-year-old stone complex is found. (S1, ep 2).

Alien Power Plants: Ancient alien theorists ask whether the Greeks and Egyptians understood electricity. Could extraterrestrials have introduced them to such technology? (S4, ep 10).

The Da Vinci Conspiracy: Experts scrutinise the paintings, journals and technical drawings of Leonardo Da Vinci. Could they hide evidence of extra-terrestrial beings? (S4, ep 11).

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 Path To Stonehenge: Walking from the stone circles of Avebury to Stonehenge, Tony explores the connections between Europe's finest collection of Neolithic monuments. (S2, ep 1).

Dolphin Saviours, Grim Reapers, Hysterical Strength: A look at dolphin rescues, death-smelling pets and a skinny teen with unbelievable strength. (S1, ep 4).

Aswang, Crashed on Mars, and Giant Wolves: Explore the truth behind sightings of a dreaded Filipino creature, a possible landing site on Mars and a big bad wolf in Canada. (S3, ep 3).

Time Travellers: Scientists explore the possibility that sightings of alien beings or UFOs may be evidence of time travellers from the future. (S4, ep 12).

Aliens And Dinosaurs: Theorists investigate a depiction of a stegosaurus found at Angkor Wat in Cambodia. Could it suggest that alien species killed off the dinosaurs? (S4, ep 13).

Torpedo Boats At War: 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).

The Enemy Within: The Nazis' decision to take on a second ideological war in their racist quest to realise the Aryan ideal leads to the death of millions. (3 of 6).

Embark on an eye-opening journey as experts investigate the startling mysteries captured by satellites orbiting the Earth: from hidden worlds to unexplainable natural phenomena. (S4, ep 15).

Time Travellers: Scientists explore the possibility that sightings of alien beings or UFOs may be evidence of time travellers from the future. (S4, ep 12).

Aliens And Dinosaurs: Theorists investigate a depiction of a stegosaurus found at Angkor Wat in Cambodia. Could it suggest that alien species killed off the dinosaurs? (S4, ep 13).

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).

Frontline Dorset: Tony Robinson winds back the clock to 1940 for a walk along Dorset's Jurassic Coast, revealing the county's World War II role as the frontline against Hitler. (S1, ep 1).

The Enemy Within: The Nazis' decision to take on a second ideological war in their racist quest to realise the Aryan ideal leads to the death of millions. (3 of 6).

Secrets and Lies: 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. (S1, ep 10).

Bigfoot Photobombs Eagle's Nest, Mexican Blackbirds Dive to Their Death, and Human Faced Fish: Investigate sasquatch footage, birds plunging to their death and a ghostly phantom. (S3, ep 4).

Embark on an eye-opening journey as experts investigate the startling mysteries captured by satellites orbiting the Earth: from hidden worlds to unexplainable natural phenomena. (S4, ep 20).

Alan Godfrey/'Abductions': Craig Charles joins forces with world-renowned space journalist Sarah Cruddas to investigate some of the most perplexing recent UFO encounters. (S1, ep 8).

Breakthrough: Take a tour of some of the most significant breakthroughs in human history, from the digital revolution to the first aircraft to fly faster than the speed of sound. (S1, ep 4).

Einstein: Rick Edwards, Ria Lina and Rachel Parris join Russell to discuss whether Albert Einstein was a genius or a controlling egomaniac. (S1, ep 2).

In the final months of WWII, how close were the Nazis and Japan to creating the nuclear explosion that would win the war? Experts and historians examine the evidence. (S1, ep 2).

Runes: 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. (S1, ep 6).

Time Travellers: Scientists explore the possibility that sightings of alien beings or UFOs may be evidence of time travellers from the future. (S4, ep 12).

Aliens And Dinosaurs: Theorists investigate a depiction of a stegosaurus found at Angkor Wat in Cambodia. Could it suggest that alien species killed off the dinosaurs? (S4, ep 13).

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).

Romans In The Lakes: The Lake District is one of the country's most popular destinations - but few see how the conquering Roman army made their mark on the stunning landscape. (S2, ep 2).

Sailing Stones, Brown Mountain Lights, Super Human Runner: A look at Death Valley boulders, mysterious dancing lights and super-marathon runners. (S1, ep 5).

Bigfoot Photobombs Eagle's Nest, Mexican Blackbirds Dive to Their Death, and Human Faced Fish: Investigate sasquatch footage, birds plunging to their death and a ghostly phantom. (S3, ep 4).

Mystery Of Puma Punku: No one knows who designed and built Bolivia's sophisticated temple complex. Could it have been aliens? Experts investigate. (S4, ep 14).

Destination Orion: Experts question ancient civilisations' fixation with the Orion constellation. Could this star group have been an entry point for aliens visiting Earth? (S4, ep 15).

Cold War Warriors: Exploring the Cold War vessels that played pivotal roles in events such as the blockade of Cuba and the Vietnam war. (S1, ep 6).

Drugs, Delusion and Demise: An examination of Hitler's almost daily injection of opioids and methamphetamines and their impact on his murderous regime and his character. (4 of 6).

Embark on an eye-opening journey as experts investigate the startling mysteries captured by satellites orbiting the Earth: from hidden worlds to unexplainable natural phenomena. (S4, ep 16).

Mystery Of Puma Punku: No one knows who designed and built Bolivia's sophisticated temple complex. Could it have been aliens? Experts investigate. (S4, ep 14).

Destination Orion: Experts question ancient civilisations' fixation with the Orion constellation. Could this star group have been an entry point for aliens visiting Earth? (S4, ep 15).

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 Birth of Industry: Tony heads out on a 40-mile walk through the wild, dramatic and romantic Peak District - the place where the Industrial Revolution began. (S1, ep 2).

Drugs, Delusion and Demise: An examination of Hitler's almost daily injection of opioids and methamphetamines and their impact on his murderous regime and his character. (4 of 6).

Film lifting the lid on the secret events surrounding the Russian submarine, Red October, that went missing in 1968, and which brought the Soviet Union and US to the brink of war. (1 of 2).

Marble Mountain Bigfoot, Waldek Mine Whispers, and UFO Buzzes Jet: Examine possible Sasquatch footage, a man claiming to have heard the dead and an odd UFO incident above Nevada. (S3, ep 5).

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).

Stephenville: 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 9).

Ancient Icons In The Modern Age: Explore the truth and lies behind ancient Egypt's best known and loved icons, including the Great Sphinx, Tutankhamun and more. (S1, ep 4).

Pain and Punishment: Witness the twisted origin stories of some of history's most diabolically creative and brutal torture devices, from the Iron Maiden to the Pear of Anguish. (S1, ep 4).

Zeus: Ancient Greece's most powerful god wages an epic struggle against his father for control of the universe. It's the ultimate clash in what is mythology's greatest showdown. (S1, ep 10).

Boudica's Revenge: Roman troops carry out a vicious invasion on Boudica's settlement, prompting her to lead a revolt that almost ends the Roman occupation of Britannia. (S1, ep 5).

Mystery Of Puma Punku: No one knows who designed and built Bolivia's sophisticated temple complex. Could it have been aliens? Experts investigate. (S4, ep 14).

Destination Orion: Experts question ancient civilisations' fixation with the Orion constellation. Could this star group have been an entry point for aliens visiting Earth? (S4, ep 15).

Elizabethan Plymouth: Alice explores the stories of England's 'Golden Age', from Sir Francis Drake to the Spanish Armada, piracy, theft, and the slave trade. (S3, ep 4).

Smuggler's Cornwall: Tony takes in a stretch of the beautiful Cornish coast, discovering the history of smuggling - the biggest industry in the area back in the 18th century. (S2, ep 3).

Time Traveller, American Stonehenge, Plant Perception: Check out mind-reading plants, pagan human sacrifice and Californian time travellers. (S1, ep 6).

Marble Mountain Bigfoot, Waldek Mine Whispers, and UFO Buzzes Jet: Examine possible Sasquatch footage, a man claiming to have heard the dead and an odd UFO incident above Nevada. (S3, ep 5).

Secrets Of The Tombs: Experts question the startling similarities in burial tombs from distant cultures, asking if aliens could have influenced their complicated designs. (S5, ep 1).

Prophets & Prophecies: Did prophets such as Elijah and Joseph Smith communicate with a heavenly source or did they actually come into contact with extraterrestrials? (S5, ep 2).

Rescue Ships: Stories of hospital ships and those who served on them, including the tragic story of the sinking of the Titanic's sister vessel, The Britannic. (S1, ep 7).

The Bitchy Inner Circle: Although it seemed like the biggest names in the Nazi Germany hierarchy were working together, behind the scenes nepotism, corruption and fear were rife. (5 of 6).

Embark on an eye-opening journey as experts investigate the startling mysteries captured by satellites orbiting the Earth: from hidden worlds to unexplainable natural phenomena. (S4, ep 17).

Secrets Of The Tombs: Experts question the startling similarities in burial tombs from distant cultures, asking if aliens could have influenced their complicated designs. (S5, ep 1).

Prophets & Prophecies: Did prophets such as Elijah and Joseph Smith communicate with a heavenly source or did they actually come into contact with extraterrestrials? (S5, ep 2).

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).

The Tudor Way: Tony Robinson takes a 45-mile hike through the beautiful countryside of the Weald in Kent and East Sussex, discovering its rich and surprising Tudor heritage. (S1, ep 3).

The Bitchy Inner Circle: Although it seemed like the biggest names in the Nazi Germany hierarchy were working together, behind the scenes nepotism, corruption and fear were rife. (5 of 6).

Film lifting the lid on the secret events surrounding the Russian submarine, Red October, that went missing in 1968, and which brought the Soviet Union and US to the brink of war. (2 of 2).

ISS UFO Swarm, Yale Lake Leaf Monster, and Rat King: Tony and the team investigate signs of an imminent alien invasion, reports of a lake monster, and a super rat collective. (S3, ep 6).

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).

Seti: 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 10).

Earth's Unsolved Mysteries: William Shatner examines some of the world's stunning displays of natural phenomena that are so spectacular - and strange - that they defy wisdom. (S3, ep 33).

The Power of Prophecy: Throughout history, many people have claimed to be able to see into the future - but what did their prophecies reveal? (S3, ep 34).

How did a Frenchman living in the 16th century predict so many modern-day disasters? This special explores how one person could see into the future.

Secrets Of The Tombs: Experts question the startling similarities in burial tombs from distant cultures, asking if aliens could have influenced their complicated designs. (S5, ep 1).

Prophets & Prophecies: Did prophets such as Elijah and Joseph Smith communicate with a heavenly source or did they actually come into contact with extraterrestrials? (S5, ep 2).

Glasgow Age of Steam: Alice Roberts explores Glasgow's age of steam, from lethal diseases and industrial injury to genteel tea rooms. (S3, ep 5).

Power Couples: Three of the most extravagant and expensive weddings in history are profiled. Lavish and luxurious was the only way to celebrate for these big spenders. (S1, ep 9).

Wigan Pier: Tony travels along the first 50 miles of the iconic Liverpool-Leeds canal to Wigan Pier, uncovering some extraordinary Georgian and Victorian stories along the way. (S2, ep 4).

Lightning Strikes, Human Hibernation, Chinese Anchors: A man survives six lightning strikes, while a toddler is frozen solid and thawed unharmed. (S1, ep 7).

ISS UFO Swarm, Yale Lake Leaf Monster, and Rat King: Tony and the team investigate signs of an imminent alien invasion, reports of a lake monster, and a super rat collective. (S3, ep 6).

The Disclosure Event: In 2021, the US government broke a 70-year precedent of denying UFOs and released a groundbreaking report on Unidentified Aerial Phenomena. This is the full story.

Mystery of the Standing Stones: According to Ancient Astronaut Theorists, the placement of monoliths and their geological makeup could point to extraterrestrial intervention. (S14, ep 2).

Beneath the Sacred Temples: Some of the world's most iconic sacred temples were built atop the ruins of structures that are far more ancient. Do these locations hold powers? (S14, ep 3).

Military Blunders: Early victories lead to Hitler's delusional overconfidence that begins to work against him as the mistakes roll in thick and fast. (6 of 6).

Film lifting the lid on the secret events surrounding the Russian submarine, Red October, that went missing in 1968, and which brought the Soviet Union and US to the brink of war. (1 of 2).

Film lifting the lid on the secret events surrounding the Russian submarine, Red October, that went missing in 1968, and which brought the Soviet Union and US to the brink of war. (2 of 2).

The Disclosure Event: In 2021, the US government broke a 70-year precedent of denying UFOs and released a groundbreaking report on Unidentified Aerial Phenomena. This is the full story.

Mystery of the Standing Stones: According to Ancient Astronaut Theorists, the placement of monoliths and their geological makeup could point to extraterrestrial intervention. (S14, ep 2).

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).

Military Blunders: Early victories lead to Hitler's delusional overconfidence that begins to work against him as the mistakes roll in thick and fast. (6 of 6).

Thou Shalt Not Steal - Hobby Lobby and the Museum of the Bible: A discovery at Memphis International Airport shakes the foundations of one of the US' wealthiest families. (S1, ep 4).

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

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

The Great War - the Somme: Presenter Karl Ude-Martinez takes a tour of the weapons used during the Battle of the Somme in 1916, including machine guns and poison gas. (S1, ep 4).

Where Ark Thou?: In the Bible, both the Ark of the Covenant and Noah's Ark are built to protect, each designed by God himself - before they were lost to history. (S1, ep 1).

The Keys to Immortality: Explores humanity's quest for immortality through legendary artifacts like the Holy Grail, Fountain of Youth and Philosopher's Stone. (S1, ep 2).

X-Rated: This episode delves into the truth behind the rumours of Hitler's sex life, including whispers of homosexuality, voyeurism and sadomasochism. (1 of 4).

The Disclosure Event: In 2021, the US government broke a 70-year precedent of denying UFOs and released a groundbreaking report on Unidentified Aerial Phenomena. This is the full story.

Mystery of the Standing Stones: According to Ancient Astronaut Theorists, the placement of monoliths and their geological makeup could point to extraterrestrial intervention. (S14, ep 2).

Beneath the Sacred Temples: Some of the world's most iconic sacred temples were built atop the ruins of structures that are far more ancient. Do these locations hold powers? (S14, ep 3).

Boudica's Revenge: Roman troops carry out a vicious invasion on Boudica's settlement, prompting her to lead a revolt that almost ends the Roman occupation of Britannia. (S1, ep 5).

Earth's Unsolved Mysteries: William Shatner examines some of the world's stunning displays of natural phenomena that are so spectacular - and strange - that they defy wisdom. (S3, ep 33).

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).

NSW & WA: Rob and Shelley Hartland believe they live under a \"UFO super highway\". Meanwhile, Peter Khoury claims he experienced a close encounter - of the sexual kind. (S1, ep 5).

The World on Alert: After decades of secrecy, high-ranking government officials are now discussing UFOs. But why now? Some say the evidence has become too great to ignore. (S14, ep 4).

Recovering the Ark of the Covenant: Some 2600 years ago, the most sacred relic of the ancient world suddenly disappeared from history. Where did it go and why? (S14, ep 5).

Secrets of the Star Ancestors: Explore the stories of the Star Ancestors - powerful beings embedded in the traditions of native people across North America that still exist. (S14, ep 6).

Where Ark Thou?: In the Bible, both the Ark of the Covenant and Noah's Ark are built to protect, each designed by God himself - before they were lost to history. (S1, ep 1).

The Keys to Immortality: Explores humanity's quest for immortality through legendary artifacts like the Holy Grail, Fountain of Youth and Philosopher's Stone. (S1, ep 2).

The race to develop the first atomic bomb was critical amid the struggle for WWII victory. Experts reveal new evidence behind Germany's top-secret development of nuclear weapons. (S1, 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).

Explore the mystery of the stone giant and the vanishing desert kingdom, and nukes and spooks in the Middle East. Plus, Harry Potter's Hedwig reveals her dark side. (S5, ep 3).

Learn about the mystery of the vanishing lake, toxic hell storms, CIA-trained killer monks and polar bears that stalked stricken World War II heroes. (S5, ep 4).

The World on Alert: After decades of secrecy, high-ranking government officials are now discussing UFOs. But why now? Some say the evidence has become too great to ignore. (S14, ep 4).

Recovering the Ark of the Covenant: Some 2600 years ago, the most sacred relic of the ancient world suddenly disappeared from history. Where did it go and why? (S14, ep 5).

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).

Nazi Railways: Series exploring the role of trains in the major conflicts of the past 150 years. Auschwitz survivors explore the railways' part in the Nazis' mass murder. (S1, ep 1).

WWI: Rise of the Machines: Examining moments of engineering ingenuity which made the difference between triumph and disaster on the battlefield - beginning with World War I. (S1, ep 1).

Secrets of the Star Ancestors: Explore the stories of the Star Ancestors - powerful beings embedded in the traditions of native people across North America that still exist. (S14, ep 6).

Demonic Invasion, Angel of Death, Dead Man Rotting: A demon stalks two hospital workers, a nurse faces a terrifying reality, a married couple are overcome by the stench of death. (S1, ep 1).

The Matron's Revenge, Possessed in Texas, the Face of Death: A nurse faces an unearthly apparition, a home is struck by demonic possession, and a woman starts seeing ghosts. (S1, ep 2).

The World on Alert: After decades of secrecy, high-ranking government officials are now discussing UFOs. But why now? Some say the evidence has become too great to ignore. (S14, ep 4).

Recovering the Ark of the Covenant: Some 2600 years ago, the most sacred relic of the ancient world suddenly disappeared from history. Where did it go and why? (S14, ep 5).

Secrets of the Star Ancestors: Explore the stories of the Star Ancestors - powerful beings embedded in the traditions of native people across North America that still exist. (S14, ep 6).

The Crash: Join Philip Mantle, Britain's most renowned UFO investigator, as he attempts to discover what really happened in 1841 in the desert of Roswell. (1 of 4).

The Power of Prophecy: Throughout history, many people have claimed to be able to see into the future - but what did their prophecies reveal? (S3, ep 34).

Gruesome Medicine: From leeches to torpedo fish, discover the ancients' strange medical cures, including the Inca's trepanning technique that involved cutting holes in people's skulls.

Harry Hill on Humour: 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).

Beyond Nazca: Ancient alien theorists explore the mysterious phenomena of the Nazca Lines. Could these huge geoglyphs in Southern Peru have an extraterrestrial connection? (S5, ep 3).

Strange Abductions: Experts scrutinise The Bible for evidence of alien abductions. Could extraterrestrials have been kidnapping humans for thousands of years? (S5, ep 4).

Montezuma's Lost Treasure: Discover the Aztec king's glittering treasure that vanished into thin air, inspiring a 500-year search spanning continents. (S5, ep 1).

The Men Who Gave the Orders: 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).

Embark on an eye-opening journey as experts investigate the startling mysteries captured by satellites orbiting the Earth: from hidden worlds to unexplainable natural phenomena. (S4, ep 18).

Beyond Nazca: Ancient alien theorists explore the mysterious phenomena of the Nazca Lines. Could these huge geoglyphs in Southern Peru have an extraterrestrial connection? (S5, ep 3).

Strange Abductions: Experts scrutinise The Bible for evidence of alien abductions. Could extraterrestrials have been kidnapping humans for thousands of years? (S5, ep 4).

Elizabethan Plymouth: Alice explores the stories of England's 'Golden Age', from Sir Francis Drake to the Spanish Armada, piracy, theft, and the slave trade. (S3, ep 4).

Battle In The Glens: Tony takes a tough four-day trek through the Kintail region of the Highlands to discover the incredible story of the Jacobite Uprisings of the early 1700s. (S1, ep 4).

The Gladiators: Roman emperor Titus plans 100 days of games to commemorate the Colosseum's completion in 80 AD, including a fight to the death between Priscus and Verus. (S1, ep 1).

The Men Who Gave the Orders: 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).

Witch's Broomstick, UFOs Vs. Volcanoes, and Oakville Blobs: The team investigate footage of a witch's broomstick, extraterrestrial goings-on and blobs falling from the sky. (S3, ep 7).

Explore the mystery of the stone giant and the vanishing desert kingdom, and nukes and spooks in the Middle East. Plus, Harry Potter's Hedwig reveals her dark side. (S5, ep 3).

Alien Engineering (Part 1 of 2): What would happen if a UFO did land on Earth and humans found it? Engineers create a 'spaceship' to see how alien technology could work. (S1, ep 14).

Queen Boudicca's Revolt: Revisiting the bloody British uprising against the Romans, presenter Karl Ude-Martinez tests out swords, spears and armour. (S1, ep 5).

Fatima's Lost Prophecy: In 1917, three young shepherd children from Fatima, Portugal, claimed to be instruments of divine prophecy. Was there truth to their allegations? (S1, ep 5).

Montezuma's Lost Treasure: Discover the Aztec king's glittering treasure that vanished into thin air, inspiring a 500-year search spanning continents. (S5, ep 1).

Ludwig II: The Mad King of Bavaria: Explore the controversy surrounding the death of the eccentric King Ludwig, whose unstable behaviour saw him deposed. (S1, ep 4).

Beyond Nazca: Ancient alien theorists explore the mysterious phenomena of the Nazca Lines. Could these huge geoglyphs in Southern Peru have an extraterrestrial connection? (S5, ep 3).

Strange Abductions: Experts scrutinise The Bible for evidence of alien abductions. Could extraterrestrials have been kidnapping humans for thousands of years? (S5, ep 4).

Georgian Edinburgh: Alice Roberts explores Georgian Edinburgh's finest architecture, the roots of modern Scottishness, and some dark imperial controversies. (S3, ep 6).

The Dark Age of Northumbria: Tony sets out on the trail of St Cuthbert across the ancient kingdom of Northumbria stretching across its 7th-century extent from Edinburgh to York. (S2, ep 5).

Alien Engineering (Part 1 of 2): What would happen if a UFO did land on Earth and humans found it? Engineers create a 'spaceship' to see how alien technology could work. (S1, ep 14).

Witch's Broomstick, UFOs Vs. Volcanoes, and Oakville Blobs: The team investigate footage of a witch's broomstick, extraterrestrial goings-on and blobs falling from the sky. (S3, ep 7).

Monoliths: A look at how ancient man could have built huge stone monoliths without advanced tools or technology. Could they have had extra-terrestrial help? (S5, ep 5).

Viking Gods: Ancient alien experts investigate the mysterious and fearsome Norse Gods. Were they divine? Or could the all-powerful Vikings have been guided by aliens? (S5, ep 6).

The Garden of Eden: Investigate the mystery of the Garden of Eden - was it real, or just a place created to explain the story of human creation? (S5, ep 2).

The Best Laid Plans: 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).

Embark on an eye-opening journey as experts investigate the startling mysteries captured by satellites orbiting the Earth: from hidden worlds to unexplainable natural phenomena. (S4, ep 19).

Monoliths: A look at how ancient man could have built huge stone monoliths without advanced tools or technology. Could they have had extra-terrestrial help? (S5, ep 5).

Viking Gods: Ancient alien experts investigate the mysterious and fearsome Norse Gods. Were they divine? Or could the all-powerful Vikings have been guided by aliens? (S5, ep 6).

Glasgow Age of Steam: Alice Roberts explores Glasgow's age of steam, from lethal diseases and industrial injury to genteel tea rooms. (S3, ep 5).

The Path To Stonehenge: Walking from the stone circles of Avebury to Stonehenge, Tony explores the connections between Europe's finest collection of Neolithic monuments. (S2, ep 1).

The Builder: Emperor Domitian tasks master builder Haterius with constructing a labyrinth underneath the Colosseum floor. (S1, ep 2).

The Best Laid Plans: 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).

Hook Island Monster, Skydivers' Plane Stall, and Somalia Freighter Phantom: The team explore possible proof of a sea monster, a tale of a skydive gone wrong, and a ghostly image. (S3, ep 8).

Learn about the mystery of the vanishing lake, toxic hell storms, CIA-trained killer monks and polar bears that stalked stricken World War II heroes. (S5, ep 4).

Alien Engineering (Part 2 of 2): Laser weapons and tele-transporters would probably all be fitted to an alien spaceship, but what if they could be used by humans too? (S1, ep 15).

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).

Sexspionage: As long as there has been espionage, sex and the promise of it have been powerful tools of persuasion and blackmail.

The Garden of Eden: Investigate the mystery of the Garden of Eden - was it real, or just a place created to explain the story of human creation? (S5, ep 2).

Shimoa and the Sailing Stones: Rocks appear to magically move across a dry lakebed in America, while a major discovery is made in China's Ordos Desert. (S1, ep 3).

Monoliths: A look at how ancient man could have built huge stone monoliths without advanced tools or technology. Could they have had extra-terrestrial help? (S5, ep 5).

Viking Gods: Ancient alien experts investigate the mysterious and fearsome Norse Gods. Were they divine? Or could the all-powerful Vikings have been guided by aliens? (S5, ep 6).

Industrial Revolution Manchester: Alice Roberts explores Manchester's history of protest and rebellion during the Industrial Revolution, from Marx to the Suffragettes. (S3, ep 7).

North Norfolk: Tony takes in the wonderful seascapes of the North Norfolk coast, determined to uncover how it remained so unchanged through the Victorian age of industry. (S2, ep 6).

Alien Engineering (Part 2 of 2): Laser weapons and tele-transporters would probably all be fitted to an alien spaceship, but what if they could be used by humans too? (S1, ep 15).

Hook Island Monster, Skydivers' Plane Stall, and Somalia Freighter Phantom: The team explore possible proof of a sea monster, a tale of a skydive gone wrong, and a ghostly image. (S3, ep 8).

Von Daniken Legacy: A look at the controversial ancient alien theories of Erich von Däniken, whose books have sold over 65 million copies worldwide. (S5, ep 7).

Emperors Kings And Pharoahs: Could ancient rulers have had otherworldly links? Experts examine whether history's most powerful leaders were 'chosen' and guided by aliens. (S5, ep 8).

The Shroud of Turin: Scientists and theologians are still trying to figure out if the Shroud of Turin truly is an image of Jesus - or something very different. (S5, ep 3).

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

Embark on an eye-opening journey as experts investigate the startling mysteries captured by satellites orbiting the Earth: from hidden worlds to unexplainable natural phenomena. (S4, ep 20).

Von Daniken Legacy: A look at the controversial ancient alien theories of Erich von Däniken, whose books have sold over 65 million copies worldwide. (S5, ep 7).

Emperors Kings And Pharoahs: Could ancient rulers have had otherworldly links? Experts examine whether history's most powerful leaders were 'chosen' and guided by aliens. (S5, ep 8).

Georgian Edinburgh: Alice Roberts explores Georgian Edinburgh's finest architecture, the roots of modern Scottishness, and some dark imperial controversies. (S3, ep 6).

Romans In The Lakes: The Lake District is one of the country's most popular destinations - but few see how the conquering Roman army made their mark on the stunning landscape. (S2, ep 2).

The Beast Master: Enslaved by the Romans, Carpophorus gets trained to fight beasts in the Colosseum for the public's amusement. (S1, ep 3).

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

Panama UFO Disc, Bloody Red Sea, and the Dyatlov Pass Incident: The team examine a strange UFO sighting, the sudden appearance of a red sea and possible proof of a Yeti. (S3, ep 9).

Explore the mystery of a sunken fleet in Maryland, weird Arctic holes that NASA cannot explain and strange structures in the desert close to Area 51. (S5, ep 5).

Beyond The War Of The Worlds: HG Wells' classic tale of a Martian invasion has terrified audiences for more than 100 years. The history of its many retellings is revealed. (S1, ep 8).

Icons: Across every profession and industry, icons exist in various forms and have done throughout history, from the Albert Einstein to the Jumbo Jet and the Sydney Opera House. (S1, ep 5).

Escobar: Alex Brooker, Jon Richardson and Ellie Taylor weigh up drug lord Pablo Escobar. (S1, ep 3).

The Shroud of Turin: Scientists and theologians are still trying to figure out if the Shroud of Turin truly is an image of Jesus - or something very different. (S5, ep 3).

Blitzkrieg: Witness the extraordinary military success of the Blitzkrieg campaign, captured through rare combat footage and first-hand accounts in colour. (S1, ep 1).

Von Daniken Legacy: A look at the controversial ancient alien theories of Erich von Däniken, whose books have sold over 65 million copies worldwide. (S5, ep 7).

Emperors Kings And Pharoahs: Could ancient rulers have had otherworldly links? Experts examine whether history's most powerful leaders were 'chosen' and guided by aliens. (S5, ep 8).

Georgian Edinburgh: Alice Roberts explores Georgian Edinburgh's finest architecture, the roots of modern Scottishness, and some dark imperial controversies. (S3, ep 6).

Bronte Country: Tony heads out on a walk that reveals the story of the remarkable Bronte family, exploring how the moors inspired their most famous novels. (S3, ep 1).

Beyond The War Of The Worlds: HG Wells' classic tale of a Martian invasion has terrified audiences for more than 100 years. The history of its many retellings is revealed. (S1, ep 8).

Panama UFO Disc, Bloody Red Sea, and the Dyatlov Pass Incident: The team examine a strange UFO sighting, the sudden appearance of a red sea and possible proof of a Yeti. (S3, ep 9).

Alien Operations: Experts investigate reports of bird-like figures that practised advanced medical science in ancient times. Could they have been extra-terrestrial? (S5, ep 9).

Mysterious Relics: Experts investigate mysterious relics that have been revered by cultures for millennia. Could these sacred items truly hold divine or otherworldly power? (S5, ep 10).

Captain Kidd's Treasure: In 1698, Captain William Kidd seized a ship's treasure - but was hanged before he could reveal its whereabouts. What came of the Captain's lost booty? (S5, ep 4).

The Right Tools: 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).

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).

Alien Operations: Experts investigate reports of bird-like figures that practised advanced medical science in ancient times. Could they have been extra-terrestrial? (S5, ep 9).

Mysterious Relics: Experts investigate mysterious relics that have been revered by cultures for millennia. Could these sacred items truly hold divine or otherworldly power? (S5, ep 10).

Industrial Revolution Manchester: Alice Roberts explores Manchester's history of protest and rebellion during the Industrial Revolution, from Marx to the Suffragettes. (S3, ep 7).

Smuggler's Cornwall: Tony takes in a stretch of the beautiful Cornish coast, discovering the history of smuggling - the biggest industry in the area back in the 18th century. (S2, ep 3).

The Gladiatrix: Emperor Trajan throws his great games of AD 107 and the crowd is treated to the rare spectacle of female gladiators. (S1, ep 4).

The Right Tools: 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).

Crocodile Monster, Tiktok USO, and Ghost Dog Collar Removal: The team investigate a legendary man-eating croc, glowing lights in Mexico and chilling footage of a pair of dogs. (S3, ep 10).

Learn about the hunting of Jack the Ripper from space, the battle of the big guns in the land of the Bible, the clash of the mega-beasts, and a visitation from another galaxy. (S5, ep 6).

Brazil's Roswell: In 1977, a remote Brazilian island was visited nightly by strange flying objects, leaving people with bizarre puncture marks and blood loss. What happened? (S1, ep 10).

Health and Wealth: With the help of modern science, uncover the secrets of health and wealth in Ancient Egypt from Queen Hatshepsut's death to a case of breast cancer. (S1, ep 5).

Blades of Fury: From the destructive Viking axe to the sacred but deadly Samurai katana, razor-sharp blades wielded by fearsome warriors have spilled blood and forged empires. (S1, ep 5).

Captain Kidd's Treasure: In 1698, Captain William Kidd seized a ship's treasure - but was hanged before he could reveal its whereabouts. What came of the Captain's lost booty? (S5, ep 4).