Researchers suggest that the ancient site of Teotihuacan in central Mexico was once home to a highly advanced, perhaps extraterrestrial, civilization; excavations at Teotihuacan have unearthed discoveries out of place in the ancient world.
| Name | Type | Role | |
|---|---|---|---|
| Kristina Djokic | Writer | ||
| Max Thompson | Writer | ||
| Rob O'Brien | Producer | Co-Producer | |
| Janel Tamares | Producer | Co-Producer | |
| George Noory | Guest Star | Self - Radio Host, Coast to Coast AM | |
| Edwin 'Ed' Barnhart | Guest Star | Self - Director, Maya Exploration Center | |
| Marco Vigato | Guest Star | Self - Independent Researcher/Author, Uncharted Ruins | |
| William Henry | Guest Star | Self - Author/Investigative Mythologist | |
| Giorgio A. Tsoukalos | Guest Star | Self - Publisher, Legendary Times Magazine | |
| David Childress | Guest Star | Self - Author, Technology of the Gods | |
| James Lincoln | Guest Star | Self - Prof. of Physics, UCLA | |
| Renato Longato | Guest Star | Self - Author, E.T. Presence | |
| David Wilcock | Guest Star | Self - Author, The Ascension Mysteries | |
| Will Hart | Guest Star | Self - Author, The Genesis Race | |
| Erich von Däniken | Guest Star | Self - Author, Chariots of the Gods | |
| Jonathan Young | Guest Star | Self - Founding Curator, Joseph Campbell Archives | |
| Susan E. Leventhal | Executive Producer | for HISTORY | |
| David Silver | Executive Producer | ||
| Max Thompson | Executive Producer | ||
| Giorgio A. Tsoukalos | Executive Producer | Co-Executive Producer | |
| Kevin Burns | Executive Producer | ||
| Kristina Djokic | Executive Producer | Co-Executive Producer | |
| Kim Sheerin | Executive Producer | ||
| Shannon Owen | Executive Producer | Co-Executive Producer |