The mysterious symbol of the keyhole exists in mystic texts, sacred architecture and ancient artwork found all over the planet; exploring if this cryptic shape represents a profound connection to the cosmos.
| Name | Type | Role | |
|---|---|---|---|
| Erik Pinkston | Writer | ||
| Max Thompson | Writer | ||
| Erik Pinkston | Producer | ||
| Michelle Gorski | Producer | Supervising Producer | |
| Lara Shaghoian | Producer | Co-Producer | |
| Dr. Travis Taylor | Guest Star | Self - Astrophysicist | |
| William Henry | Guest Star | Self - Author/Investigative Mythologist | |
| David Childress | Guest Star | Self - Author, Technology of the Gods | |
| Ivana Malu | Guest Star | Self - Archaeological Guide | |
| Layne Little | Guest Star | Self - Lecturer, Religious Studies, U.C. Davis | |
| Lynn Picknett | Guest Star | Self - Author, The Secret History of Lucifer | |
| Jonathan Young | Guest Star | Self - Founding Curator, Joseph Campbell Archives | |
| Praveen Mohan | Guest Star | Self - Founder, Phenomenal Place | |
| Andrew Collins | Guest Star | Self - Author, The Cygnus Key | |
| Rita Lucarelli | Guest Star | Self - Associate Professor, U.C. Berkeley | |
| Erich von Däniken | Guest Star | Self - Author, Chariots of the Gods | |
| Hugh Newman | Guest Star | Self - Author, Earth Grids | |
| Marty Lagina | Guest Star | Self - Oak Island Treasure Hunter | |
| George J. Haas | Guest Star | Self - Author, The Cydonia Codex | |
| Ariel Bar Tzadok | Guest Star | Self - Founder, Koshertorah School | |
| Giorgio A. Tsoukalos | Guest Star | Self - Publisher, Legendary Times Magazine | |
| Mauro Peppino Zedda | Guest Star | Self - Author, Astronomy In Prehistoric Sardina | |
| 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 | ||
| Max Thompson | Executive Producer |