Sons of the Sea
Plot: The head of Dartmouth Training College has been murdered, and his successor, Captain Hyde, suspects that he himself may have been the intended target. He enlists the help of his own son Philip, a reluctant cadet at the college, to help him confirm his suspicions about planned enemy action

Leslie Banks
Kay Walsh
Mackenzie Ward
Cecil Parker
Simon Lack
Ellen Pollock
Nigel Stock
Kynaston Reeves
Charles Eaton
Ian Fleming
Maurice Elvey
George Barraud
Ted Moore