![Mystery Submarine](https://i0.wp.com/themoviedb.org/t/p/w185/mX98aHplK7B5swtzZhMYSgmoAyo.jpg)
Mystery Submarine
The Deadliest Undersea Battle Ever Filmed!
A British convoy is trying to elude a group of German U-Boats.
- Genre: War
- Country: United Kingdom
- Director: C.M. Pennington-Richards
- Cast: Edward Judd, James Robertson Justice, Laurence Payne, Joachim Fuchsberger, Arthur O'Sullivan, Albert Lieven, Richard Carpenter, Nigel Green,