Dramatised documentary telling the true story of how the HMS Venturer hunted down and sank the U-Boat U864 in February 1945, the only time two submarines duelled to the death underwater. Eyewitness accounts, secret and long-forgotten archive material and a dive into the Baltic's frozen depths bring to life the full amazing story of U864's last hours.
| Name | Type | Role | |
|---|---|---|---|
| Michael Praed | Guest Star |