From a long lost US base beneath the Arctic ice cap, to a sunken Soviet submarine, the Cold War's toxic legacy is both fascinating and terrifying.
| Actor | Role |
|---|---|
 Kerry ShaleNarrator (voice) | Narrator (voice) |
| WWilliam ColganSelf - Climatologist | Self - Climatologist |
| KKristian H. NielsenSelf - Science Historian | Self - Science Historian |
| SSören GregersenSelf | Self |
| VViktor SliusarenkoSelf - Warrant Officer | Self - Warrant Officer |
| JJustin GwynnSelf - Senior Scientist | Self - Senior Scientist |
| HHilde Elise HeldalSelf - Marine Scientist | Self - Marine Scientist |