Summary: A US spy disguises himself as a German physician to sneak aboard a German submarine located off the South American coast. Once there, he saves a kidnapped scientist and sinks the enemy vessel. (allrovi.com)

Poster submitted by Gauntlet

Genres: Drama, Adventure, War

Country: UK

Directed By: C.M. Pennington-Richards

Written By: Jon Manchip White, Bertram Ostrer

Starring: James Robertson Justice, Edward Judd, Laurence Payne, Joachim Fuchsberger, Arthur O'Sullivan

More information at the Internet Movie Database