In this extraordinary two-hour special, Shatner will bring thought-provoking questions to the leading experts of the show. Ancient Astronaut theorists Giorgio Tsoukalos, Erich von Däniken, David Childress, William Henry and Linda Moulton Howe will be joined by former British Ministry of Defense investigator Nick Pope, rocket scientist Dr. Travis Taylor, theoretical physicist Dr. Michio Kaku, and religious history experts Rabbi Ariel Bar Tzadok and Reverend Michael Carter. They will explore everything from human origins to groundbreaking archaeological finds, new understandings of the cosmos and the profound possibility that we are not alone in the universe.
| Name | Type | Role | |
|---|---|---|---|
| Max Thompson | Writer | ||
| Michelle Gorski | Producer | Supervising Producer | |
| Jason Martell | Guest Star | Self - Author, Ancient Alien Artifacts | |
| Ramy Romany | Guest Star | Self - Egyptologist | |
| John Brandenburg | Guest Star | Self - Chief Astronautic Scientist, Kelper Aerospace | |
| Brien Foerster | Guest Star | Self - Author, The Enigma of Tiwanaku and Puma Punku | |
| David Childress | Guest Star | Self - Author, Technology of the Gods | |
| Scott Creighton | Guest Star | Self - Author, The Great Pyramid Hoax | |
| Michael Dennin | Guest Star | Self - Physicist, Univ. of California, Irvine | |
| Ariel Bar Tzadok | Guest Star | Self - Founder, KosherTorah School | |
| Bill Birnes | Guest Star | Self - Author, The Big Book of UFO Facts, Figures and Truth | |
| William Henry | Guest Star | Self - Author/Investigative Mythologist | |
| Richard Dolan | Guest Star | Self - Author, UFOs and the National Security State | |
| Erich von Däniken | Guest Star | Self - Author, Chariots of the Gods | |
| William Shatner | Guest Star | Self - Host | |
| Robert Schoch | Guest Star | Self - Geologist, Boston University | |
| Michael J.S. Carter | Guest Star | Self - Author, Alien Scriptures | |
| Chandra Wickramasinghe | Guest Star | Self - Astrobiologist | |
| Robert R. Cargill | Guest Star | Self - Assoc. Prof. of Classics and Religious Studies, University of Iowa | |
| Dr. Travis Taylor | Guest Star | Self - Astrophysicist | |
| Paul Bahn | Guest Star | Self - Author, Geoglyphs: Mysteries of the Ancient World | |
| Nick Pope | Guest Star | Self - U.K. Ministry of Defense (1985-2006) | |
| Linda Moulton Howe | Guest Star | Self - Investigative Journalist, Earthfiles | |
| Jon C. Lohse | Guest Star | Self - Dir., Center for Archaeological Studies, Texas State University | |
| Giorgio A. Tsoukalos | Guest Star | Self - Ancient Astronaut Theorist | |
| Susan E. Leventhal | Executive Producer | for HISTORY | |
| Giorgio A. Tsoukalos | Executive Producer | Co-Executive Producer | |
| David Comtois | Executive Producer | ||
| Kevin Burns | Executive Producer | ||
| Kim Egan | Executive Producer | ||
| David Silver | Executive Producer | ||
| Max Thompson | Executive Producer | ||
| Jon A. Levy | Director |