The Genius Factor: 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)
Aliens And Stargates: Experts investigate remote ruins, mysterious caves and legendary mountain portals. Could these alleged stargates have brought ancient aliens to Earth? (S6, ep 5)
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)
The Nasa Connection: Experts open up NASA and secret government files. Can they find proof of alien contact in the recent or ancient past? (S4, ep 5)
Aliens And Mysterious Rituals: Experts question whether the notion of rituals, such as funerals and festivals, was brought to earth by ancient extraterrestrial visitors. (S3, ep 5)
Aliens And The Third Reich: During WWII, rumours spread that an aircraft had been built from extraterrestrial blueprints. Were aliens helping Hitler's quest for world domination? (S2, ep 5)
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)
Aliens Among Us: 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)
Aliens In America: 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)
Strange Abductions: Experts scrutinise The Bible for evidence of alien abductions. Could extraterrestrials have been kidnapping humans for thousands of years? (S5, ep 4)