From Egypt to Easter Island, towering figures built by ancient man stand watch over the Earth. Are these stone giants simply a testament to humanity's past or could they depict visitors from another world' And do they serve a technological purpose that modern man is just now unlocking'
| Name | Type | Role | |
|---|---|---|---|
| Max Thompson | Writer | ||
| Kevin Burns | Writer | ||
| Kristina Djokic | Writer | ||
| Steffen Schlachtenhaufen | Producer | ||
| Andrew Collins | Guest Star | Self - Author, The Cygnus Mystery | |
| Bruce Fenton | Guest Star | Self - Author, Exogenesis: Hybrid Humans | |
| Hugh Newman | Guest Star | Self - Co-Author, Megalith: Studies in Stone | |
| Edwin 'Ed' Barnhart | Guest Star | Self - Director, Maya Exploration Center | |
| William Henry | Guest Star | Self - Author/Investigative Mythologist | |
| Jim Vieira | Guest Star | Self - Co-Author, Giants on Record | |
| Amy Shira Teitel | Guest Star | Self - Author, Breaking the Chains of Gravity | |
| Jonathan Young | Guest Star | Self - Founding Curator, Joseph Campbell Archives | |
| David Childress | Guest Star | Self - Author, Technology of the Gods | |
| Jason Martell | Guest Star | Self - Author, Knowledge Apocalypse | |
| Nova Spivack | Guest Star | Self - Chairman, Arch Mission Foundation | |
| Giorgio A. Tsoukalos | Guest Star | Self - Publisher, Legendary Times Magazine | |
| Jeff Williams | Guest Star | Self - Geologist | |
| Peter Kazansky | Guest Star | Self - Head of Physical Optics, ORC., Univ. of Southampton | |
| David W. Sedat | Guest Star | Self - Archaeologist | |
| Roger Hopkins | Guest Star | Self - Stone Sculptor | |
| David Silver | Executive Producer | ||
| Max Thompson | Executive Producer | ||
| Kim Egan | Executive Producer | ||
| Giorgio A. Tsoukalos | Executive Producer | Co-Executive Producer | |
| Susan E. Leventhal | Executive Producer | for HISTORY | |
| Kevin Burns | Executive Producer | ||
| Evan Goldstein | Executive Producer | Co-Executive Producer |