UFO sightings, controversial photographs of alien bodies, eyewitness accounts and rare footage suggest the possibility of extraterrestrial visitors. This documentary features "Chariots of the Gods?" author Erich von Daniken, as well as Cambridge University professor Ruper Sheldrake and Chris Griscom, a sergeant of the UK police.

• Questar Video
• Erich von Däniken
• David Cameron
• Kathryn Lucius
• Jared Elliott
• Darrel Joseph
• Eugene Hartzell