A mysterious American pyramid built out of Cold War paranoia, a haunted prison, and a strange cluster of structures in the Atlantic are mysterious deserted engineering projects. Stories: 1) Nekoma Missile Complex, North Dakota, USA; 2) Redsand Sea Fort, Kent, UK; 3) Eastern State Penitentiary, Philadelphia, Pennsylvania, USA; 4) Bagger 258, Schipkau, Germany
| Name | Type | Role | |
|---|---|---|---|
| David Caldwell-Evans | Producer | Series Producer | |
| Katherine 'Kate' Swanson | Producer | ||
| Rob Bell | Guest Star | Self - Engineer and Adventurer | |
| Roma Agrawal | Guest Star | Self - Structural Engineer | |
| Lynette Nusbacher | Guest Star | Self - Military Historian | |
| David Phillips | Guest Star | Self - Project Redsand | |
| James S. Corum | Guest Star | Self - Military Historian | |
| Sara Jane Elk | Guest Star | Self - President, Eastern State Penitentiary | |
| Duane Otto | Guest Star | Self - Nekoma Missile Complex | |
| Jim Meigs | Guest Star | Self - Author and Journalist | |
| Andrew Gough | Guest Star | Self - Historian and Author | |
| Daniel 'Dan' Dickrell | Guest Star | Self - Mechanical Engineer | |
| Kyle McCabe | Executive Producer | for SCIENCE CHANNEL | |
| Bruce Burgess | Executive Producer | ||
| Henry Scott | Executive Producer | ||
| Katherine 'Kate' Swanson | Director |