Sky History2 The Alien Agenda: Ancient alien theorists investigate evidence suggesting that extraterrestrials have played a pivotal role in the progress of mankind. (S7, ep 12) 2026-07-16 Desert Mysteries: Look down over a constant inferno in Turkmenistan, mysterious circles in the Namibian desert and secret electric blue ponds in Utah. (S1, ep 8) 2026-07-16 UFO Dogfights: The team examines a declassified US Department of Defense report which analyses an alleged encounter between a fighter pilot and a UFO. (S1, ep 8) 2026-07-16 The Shame of Returning Alive: As Soviet forces push back, Goebbels calls for total war amid the devastation of German cities from Allied bombers. (S1, ep 7) 2026-07-16 Mad Medicine: Ever taken medical advice from a cigarette advert? Dive into a world where animal skin could replace your own and where doctors gave coffee enemas. (S1, ep 3) 2026-07-16 Julius Caesar: As the Roman Republic churns with civil war, Julius Caesar, desperate for fame and honour, embarks on a brutal campaign to annex Gaul and build his own reputation. (S1, ep 3) 2026-07-16 The Top Ten Mysteries of the Deep: Count down the top ten mysteries of the deep, from sunken continents to supposed proof of the lost city of Atlantis. (S15, ep 17) 2026-07-16 The Gods of Greece: Explore whether the Gods of Greece including Zeus, Apollo and Poseidon, were actually extra-terrestrial visitors to Earth. (S15, ep 18) 2026-07-16 UFO Dogfights: The team examines a declassified US Department of Defense report which analyses an alleged encounter between a fighter pilot and a UFO. (S1, ep 8) 2026-07-16 Alien Messages: 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) 2026-07-16 The Great Flood: 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) 2026-07-16 The Vanishings: 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) 2026-07-16 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. (S3, ep 6) 2026-07-16 The New UFO Hunters: In the 21st century, UFOs have gone from fringe science to mainstream obsession. Are we getting closer to understanding the strange events in the sky? (S15, ep 19) 2026-07-16 The Power of the Talisman: For millennia, people have believed that everyday objects can possess hidden energy. These talismans are seen to provide protection and good fortune. (S15, ep 20) 2026-07-16 Roads To Nowhere: What is the fate of our cars, planes and roads? What part would armadillos play in a future without people? And how do abandoned oil refineries threaten major disaster? 2026-07-16 Lightning Strikes: Discover some of history's most effective and deceptive lightning strikes, achieving victory through speed, precision and the element of surprise. (S4, ep 8) 2026-07-16 Bludgeoned to death whilst walking down a country lane, the horrific murders of Lin and Megan Russell made worldwide news. Discover the events of that shocking day. (S1, ep 4) 2026-07-16 The New UFO Hunters: In the 21st century, UFOs have gone from fringe science to mainstream obsession. Are we getting closer to understanding the strange events in the sky? (S15, ep 19) 2026-07-16 The Power of the Talisman: For millennia, people have believed that everyday objects can possess hidden energy. These talismans are seen to provide protection and good fortune. (S15, ep 20) 2026-07-16 Holiday Hell: The things that once represented our favourite times of year meet their demise, from Christmas trees and roller coasters, to high-end resorts and cruise ships. (S2, ep 6) 2026-07-16 Sky's The Limit: The most important planes in history are grounded with no humans around to fly them, including Air Force One, which suffers an explosive malfunction. (S2, ep 7) 2026-07-16 Home Wrecked Homes: Gas leaks turn suburbs into infernos and high-rise apartments crumble to the earth in an ominous look at the fate that awaits our homes post-apocalypse. (S2, ep 8) 2026-07-16 Depths of Destruction: A look at what could happen to the world underground, as minerals grow unchecked in a mine. Back on land, 400 million animals run wild in a town. (S2, ep 9) 2026-07-16 Take Me To Your Leader: The White House meets its fate in a world without people, and the President's dog must learn the way of the wild. (S2, ep 10) 2026-07-17 Lost at Sea: Witness a remote island linked to one of the world's most famous aviation mysteries and explore thousands of shipwrecks in the Bermuda Triangle. (S1, ep 9) 2026-07-17 Vortexes: The team travels to Sedona, Arizona, long known for strange phenomena, to interview witnesses to unexplained sightings of lights and objects in the skies. (S1, ep 9) 2026-07-17 Endless Numbers: A Soviet offensive pushes German forces 30km from the Polish border. On June 6, 1944, Operation Overlord is launched against Germany. (S1, ep 8) 2026-07-17 Desert War: The stories of the siege of Tobruk and the battle of El Alamein, the result of which saw the first serious defeat of the German army. (S1, ep 7) 2026-07-17 Hell in the Pacific: This episode remembers some of the thunderous naval battles which took place during the Pacific War. (S1, ep 8) 2026-07-17 The New UFO Hunters: In the 21st century, UFOs have gone from fringe science to mainstream obsession. Are we getting closer to understanding the strange events in the sky? (S15, ep 19) 2026-07-17 The Power of the Talisman: For millennia, people have believed that everyday objects can possess hidden energy. These talismans are seen to provide protection and good fortune. (S15, ep 20) 2026-07-17 Vortexes: The team travels to Sedona, Arizona, long known for strange phenomena, to interview witnesses to unexplained sightings of lights and objects in the skies. (S1, ep 9) 2026-07-17 Holiday Hell: The things that once represented our favourite times of year meet their demise, from Christmas trees and roller coasters, to high-end resorts and cruise ships. (S2, ep 6) 2026-07-17 Sky's The Limit: The most important planes in history are grounded with no humans around to fly them, including Air Force One, which suffers an explosive malfunction. (S2, ep 7) 2026-07-17 Home Wrecked Homes: Gas leaks turn suburbs into infernos and high-rise apartments crumble to the earth in an ominous look at the fate that awaits our homes post-apocalypse. (S2, ep 8) 2026-07-17 Bludgeoned to death whilst walking down a country lane, the horrific murders of Lin and Megan Russell made worldwide news. Discover the events of that shocking day. (S1, ep 4) 2026-07-17 The Top Ten Alien Influencers: Did a biblical patriarch receive instructions from 200 angels, and was Egypt's most controversial Pharaoh an extraterrestrial being? (S16, ep 1) 2026-07-17 The Top Ten Extraordinary Creatures: Ancient astronaut theorist Giorgio Tsoukalos takes a look back at some of the most mysterious yet incredible creatures ever investigated. (S16, ep 2) 2026-07-17 Wrath of God: Sacred buildings around the world begin to crumble without humans to maintain them. Clues about the planet's future lie in an abandoned desert town. (S2, ep 1) 2026-07-17 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) 2026-07-17 Beverley Allitt was thought to be a 'model' nurse. Very astute, caring and always willing to help, why did she murder four children and attempt to kill 11 others? (S1, ep 5) 2026-07-17 The Top Ten Alien Influencers: Did a biblical patriarch receive instructions from 200 angels, and was Egypt's most controversial Pharaoh an extraterrestrial being? (S16, ep 1) 2026-07-17 The Top Ten Extraordinary Creatures: Ancient astronaut theorist Giorgio Tsoukalos takes a look back at some of the most mysterious yet incredible creatures ever investigated. (S16, ep 2) 2026-07-17 The Scientist: Galen of Pergamon makes a name for himself as a physician for gladiators. Meanwhile, a devastating plague sweeps through the city. (S1, ep 6) 2026-07-17 Commodus: 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. (S1, ep 7) 2026-07-17 The Pagan: A divided Roman Empire is rocked by devastating earthquakes, fires, barbarian invasions and religious divides. Meanwhile, as Rome declines, the Colosseum lies empty. (S1, ep 8) 2026-07-17 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) 2026-07-17 The Builder: Emperor Domitian tasks master builder Haterius with constructing a labyrinth underneath the Colosseum floor. (S1, ep 2) 2026-07-18