SkyHistory2HD Experts investigate whether a controversial union leader's disappearance is linked to the mob or if he went missing on his own accord. 2026-10-14 The White House is one of the most-famous and most-haunted residences in the world. Experts investigate claims of extraordinary paranormal activity. 2026-10-14 Bizarre markings are observed from space across the planet. Strange sightings point to conspiracies that could have global repercussions. Just what on Earth are they. 2026-10-14 The cave's eerie acoustics have been associated with supernatural phenomena, earning it a reputation for connecting visitors to the spirit world. 2026-10-14 A glacier preserves clues to a 1997 disappearance as frozen wildlife, a missing scientist and Ice Age finds reveal icy secrets. 2026-10-14 From loss of time and bizarre hazy memories, to terrifying accounts of alien surgery, these are the hidden signs of alien abduction. 2026-10-14 Experts discuss the possibility of advanced alien technology that could allow UFOs to fly at blinding speed or hover effortlessly a few feet above the ground. 2026-10-14 Are UFOs a threat to civil aviation? The culture of silence within the aviation industry could speak volumes. (5 of. 2026-10-15