Exploring a top-secret relic that could have changed the Cold War, a ghost town that was once a dangerous industrial hellscape, a wooden road, and a giant warship at the bottom of the ocean. Stories: 1) H.A.R.P. Super Gun, Yuma, Arizona; 2) Hashima Island Coal Mine, Japan; 3) Plank Road, California, USA; 4) Half Moon Bay, Victoria, Australia
| Name | Type | Role | |
|---|---|---|---|
| David Caldwell-Evans | Producer | Series Producer | |
| Lucie Green | Guest Star | Self - Solar Physicist | |
| Trevor Marshal | Guest Star | Self - Local Historian, Barbados | |
| Tim Smith | Guest Star | Self - Heritage Victoria | |
| Martin Archer | Guest Star | Self - Space Physicist | |
| Roma Agrawal | Guest Star | Self - Structural Engineer | |
| Andrew Lambert | Guest Star | Self - Naval Historian | |
| Andrew Gough | Guest Star | Self - Historian and Author | |
| Saul David | Guest Star | Self - Military Historian and Author | |
| Tomoji Kobata | Guest Star | Self - Former Coal Worker, Hashima Island, Japan | |
| William Hadner | Guest Star | Self - Yuma Proving Ground | |
| Minoru Kinoshita | Guest Star | Self - Former Resident, Hashima Island, Japan | |
| Rob Bell | Guest Star | Self - Engineer and Adventurer | |
| Wayne Shilders | Guest Star | Self - Gunnery Expert | |
| John Rogers | Guest Star | Self - Friends of the Cerberus | |
| Kyle McCabe | Executive Producer | for SCIENCE CHANNEL | |
| Bruce Burgess | Executive Producer | ||
| Henry Scott | Executive Producer |