They Dare Not Love

George Brent

Prince Kurt von Rotenberg

Martha Scott

Marta Keller

Paul Lukas

Baron von Helsing

Peter Cushing

Sub-Lieutenant Blackler

Sig Arno

Louis

Georgia Backus

German Secretary

Edgar Barrier

Capt. Wilhelm Ehrhardt

Don Beddoe

Second Sailor

Nicholas Bela

First Sailor (uncredited)

Leon Belasco

Pierre