Lost in the frozen depths of the Atlantic a German U-Boat crew find themselves on a collision course with objects stranger than they can fathom. The truth leaves them bathed in confusion in this submarine drama of domestic proportions.
| Actor | Role |
|---|---|
 Craig HallNot listed | Not listed |
 Gareth ReevesNot listed | Not listed |
| NNick WardNot listed | Not listed |