The younger brother of an officer in a secret government code-breaking unit gets involved with a gang of spies and a beautiful double agent.
Leon Ames
Maj. Philip Waring
Charlotte Wynters
Helen Lane
Joan Woodbury
Therese Brahm
Don Dillaway
Paul Waring
Gustav von Seyffertitz
Albert Grood
Tenen Holtz
Simon Herrick
Walter Bonn
Anton Decker
Si Wills
Lt. Clarke
