SkyHistory2HD Previously sealed documents hint at compelling new theories about extraterrestrials. Could aliens be living among us? And could former US Presidents know something we don't. 2026-08-11 Hugh and the experts attempt to uncover a lost Roman fort connected to the Antonine Wall, buried beneath the gardens of the quiet streets of Falkirk. 2026-08-11 In Stretton, Hugh and the team search for prehistoric roundhouses and try to work out when people first made the Staffordshire village their home. 2026-08-11 Hugh Dennis and a team of archaeologists are in Devizes, searching for a revolutionary 19th-century prison with a unique design. 2026-08-11 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. 2026-08-11 Could Earth's deepest caves hide secret conduits to other worlds? Or harbour evidence that aliens once visited our planet? Experts investigate. 2026-08-11 Are we being watched by otherworldly beings? Experts make surprising discoveries as they explore the ancient past for evidence of alien overseers. 2026-08-11 In 1947, ancient scrolls were discovered in desert caves near the Dead Sea. One of them spells out - in chilling detail - a future apocalyptic war. 2026-08-11 Each episode explores three artefacts drawn from museum collections, private archives and Bruce's own unrivalled holdings. 2026-08-11 Each episode explores three artefacts drawn from museum collections, private archives and Bruce's own unrivalled holdings. 2026-08-11 The story of Yorkshire Ripper Peter Sutcliffe, who murdered 13 women during a five-year killing spree that began in 1975. 2026-08-11 Could Earth's deepest caves hide secret conduits to other worlds? Or harbour evidence that aliens once visited our planet? Experts investigate. 2026-08-11 Are we being watched by otherworldly beings? Experts make surprising discoveries as they explore the ancient past for evidence of alien overseers. 2026-08-11 Witness the extraordinary military success of the Blitzkrieg campaign, captured through rare combat footage and first-hand accounts in colour. 2026-08-11 Through newly colourised footage, enter the heart of the War of the Mediterranean as the fate of North Africa was contested during the battle of El Alamein. 2026-08-11 Rewind to the US Army's largest and bloodiest conflict of World War II: The Battle of the Bulge. Venture through the battle in newly colourised footage. 2026-08-11 Hear about the personal rivalry between Winston Churchill and Adolf Hitler, exploring how their exploits in World War I shaped their future commands. (1 of. 2026-08-11 Through archive footage, see how these radically different characters clashed in a fascinating subplot of World War II. (2 of. 2026-08-11 Explore a psychedelic swirl in the Utah wastelands, a bizarre configuration of circles in the Sahara and a remote polka-dot lake in Canada. 2026-08-11 A look at the possibility that life began on Mars and travelled to Earth. Plus, if aliens exist, what plans do they have in store for us? Experts investigate. 2026-08-11 Germany invades Poland, sparking global war: Japan expands in Asia and Africa's colonies become key battlegrounds for power and resources. 2026-08-11 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. 2026-08-11 Posing as a drug dealer, undercover informant Tony Tait infiltrates the secret biker club to take down leader Sonny Barger and meth cook Kenny Owens. 2026-08-11 Could Earth's deepest caves hide secret conduits to other worlds? Or harbour evidence that aliens once visited our planet? Experts investigate. 2026-08-11 Are we being watched by otherworldly beings? Experts make surprising discoveries as they explore the ancient past for evidence of alien overseers. 2026-08-11 A look at the possibility that life began on Mars and travelled to Earth. Plus, if aliens exist, what plans do they have in store for us? Experts investigate. 2026-08-12 Witness the extraordinary military success of the Blitzkrieg campaign, captured through rare combat footage and first-hand accounts in colour. 2026-08-12 Through newly colourised footage, enter the heart of the War of the Mediterranean as the fate of North Africa was contested during the battle of El Alamein. 2026-08-12 Hear about the personal rivalry between Winston Churchill and Adolf Hitler, exploring how their exploits in World War I shaped their future commands. (1 of. 2026-08-12 The story of Yorkshire Ripper Peter Sutcliffe, who murdered 13 women during a five-year killing spree that began in 1975. 2026-08-12 History's greatest geniuses have often said their ideas came from visions or hallucinations. But could they have come from aliens? Experts investigate. 2026-08-12 Experts investigate the mysterious origins of mummification. Could this global practice be proof that aliens once visited Earth. 2026-08-12 Was Leonardo Da Vinci, one of history's great thinkers also one of its greatest prophets? And did he envision world destruction. 2026-08-12 Each episode explores three artefacts drawn from museum collections, private archives and Bruce's own unrivalled holdings. 2026-08-12 Each episode explores three artefacts drawn from museum collections, private archives and Bruce's own unrivalled holdings. 2026-08-12 The brother of millionaire Christopher Foster joins those trying to understand why he killed his wife and daughter in Shropshire in 2008. 2026-08-12 History's greatest geniuses have often said their ideas came from visions or hallucinations. But could they have come from aliens? Experts investigate. 2026-08-12 Experts investigate the mysterious origins of mummification. Could this global practice be proof that aliens once visited Earth. 2026-08-12 Ancient Astronaut theorists suggest that aliens have been guiding mankind in secret to bring about huge leaps in technological advancement. 2026-08-12 As science turns towards augmenting humanity with technology, theorists suggest that we are merely following the path of our alien creators. 2026-08-12 Ancient Astronaut theorists look at the Aborigine legend of Dreamtime, and ask if these stories hold the proof that aliens created life on Earth. 2026-08-12 Could claims of "The Nine" - a federation of extraterrestrial beings who monitor and influence mankind - have any credence? Experts believe so. 2026-08-12 Ancient Astronaut theorists suggest that China, with its history of technological advancement and isolationism, could have been the home of alien beings. 2026-08-12 Fly over metropolises, discovering an important urban centre that is sinking, ruins buried under the desert and a ghost town on the edge of the Gobi Desert. 2026-08-12 Experts open previously off-limits files in a bid to answer some of the most mysterious questions surrounding UFOs and extra-terrestrial life. 2026-08-12 In 1941, Hitler invaded the USSR. Operation Barbarossa stalls as winter hits and Soviet resistance, fuelled by propaganda, turns the tide. 2026-08-12 The everyday products that are way more dangerous than they seem to the unsuspecting eye. What were the most ill-advised and risky household products. 2026-08-12 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. 2026-08-12 History's greatest geniuses have often said their ideas came from visions or hallucinations. But could they have come from aliens? Experts investigate. 2026-08-12 Experts investigate the mysterious origins of mummification. Could this global practice be proof that aliens once visited Earth. 2026-08-12 Experts open previously off-limits files in a bid to answer some of the most mysterious questions surrounding UFOs and extra-terrestrial life. 2026-08-13