A shocking study reveals that the original builders of Stonehenge mysteriously vanished; but Stonehenge's mysterious Bluestone circle could have activated a portal that transported the ancient culture back to their former home among the stars.
| Name | Type | Role | |
|---|---|---|---|
| Kevin Burns | Writer | ||
| Max Thompson | Writer | ||
| Doug Gordon | Writer | ||
| Gabriel Rotello | Writer | ||
| Jim Hense | Producer | ||
| Hugh Newman | Guest Star | Self - Co-Author, Megalith: Studies in Stone | |
| John Martineau | Guest Star | Self - Editor, Megalith: Studies in Stone | |
| Tok Thompson | Guest Star | Self - Professor of Anthropology, USC | |
| Graham Phillips | Guest Star | Self - Author, Wisdomkeepers of Stonehenge | |
| Andrew Collins | Guest Star | Self - Author, The Cygnus Key | |
| Kirsten Fisher | Guest Star | Self - Biologist, Cal State Univ. Los Angeles | |
| Gregory Beirich | Guest Star | Self - Lecturer, Cal State Univ. Long Beach | |
| Bill Birnes | Guest Star | Self - Author, UFOs and the White House | |
| William Henry | Guest Star | Self - Author/Investigative Mythologist | |
| Jonathan Young | Guest Star | Self - Founding Curator, Joseph Campbell Archives | |
| Nick Pope | Guest Star | Self - U.K. Ministry of Defense (1985-2006) | |
| Giorgio A. Tsoukalos | Guest Star | Self - Publisher, Legendary Times Magazine | |
| David Childress | Guest Star | Self - Author, Technology of the Gods | |
| Max Thompson | Executive Producer | ||
| Gabriel Rotello | Executive Producer | ||
| Kim Egan | Executive Producer | ||
| Susan E. Leventhal | Executive Producer | for HISTORY | |
| Kevin Burns | Executive Producer | ||
| Giorgio A. Tsoukalos | Executive Producer | Co-Executive Producer | |
| David Silver | Executive Producer |