A strange deserted city in America's heartland, an eerie gigantic wall deep in snow-capped mountains, and a mysterious top-secret Soviet facility are deserted engineering projects. Stories: 1) Gleno Dam, Valle di Scalve, Italy; 2) Packard Automotive Plant, Detroit, USA; 3) Hara Submarine Bade, Hara, Estonia; 4) Masurian Canal-Lock Gorne, Leśniewo, Poland
| Name | Type | Role | |
|---|---|---|---|
| Jane Cameron | Producer | Series Producer | |
| Katherine 'Kate' Swanson | Producer | ||
| Artur Talvik | Guest Star | Self - Local Politician, Estonia | |
| Andrew Gough | Guest Star | Self - Historian and Author | |
| Stephen Wisdom | Guest Star | Self - Historian | |
| Lynette Nusbacher | Guest Star | Self - Military Historian | |
| Rob Bell | Guest Star | Self - Engineer and Adventurer | |
| David Caldwell-Evans | Guest Star | Self - Historian | |
| Bartek Plebanczyk | Guest Star | Self - Local Historian | |
| Roma Agrawal | Guest Star | Self - Structural Engineer | |
| James S. Corum | Guest Star | Self - Military Historian | |
| Benedetto Bonomo | Guest Star | Self - Mayor of Colere | |
| Jacob Jones | Guest Star | Self - Tour Guide, Packard Automotive Plant | |
| Daniel 'Dan' Dickrell | Guest Star | Self - Mechanical Engineer | |
| Bruce Burgess | Executive Producer | ||
| Henry Scott | Executive Producer | ||
| Neil Laird | Executive Producer | for SCIENCE CHANNEL | |
| Katherine 'Kate' Swanson | Director |