Genre: Documentary, History, Paranormal
Premise: Investigators circle the globe in search of evidence in their quest to determine whether life on Earth began in outer space and if aliens influenced mankind in ancient times. Did extraterrestrial beings visit Earth and share information about technology and influence human religions? And more importantly, if aliens visited the planet before, will they return? Alien theorists believe that the answer to both questions is a resounding yes.
S03, E01 (First Aired: Jul. 28, 2011)
A cemetery in Aurora, Texas claims to hold the body of an alien; petroglyphs depict strange beings in Utah; 19th century ranchers report seeing an otherworldly creature emerge from Elizabeth Lake; the home of Wyatt Earp in Tombstone, Ariz.
S08, E08 (First Aired: Aug. 15, 2014)
Stories of strange encounters during major events in history and myths containing gods that intervene in human affairs may be early accounts of alien encounters.