Cast
Glenn Langan
Student
Dorothy Vaughan
Stout Woman Bumped by Garrett
Sven Hugo Borg
Chauffeur
John Hamilton
Code Room Instructor
Chris-Pin Martin
Tunisian Guard
Eddie Acuff
Minor Role
Sarah Edwards
Militant American Tourist
George Bancroft
Dudley Garrett
Hans Heinrich von Twardowski
Dr. Helm
Enrique Acosta
Geneva Restaurant Patron
Sidney Bracey
Ship Steward
John J. Richardson
Man in O'Grady Crowd
Wilhelm von Brincken
Foreign Official
Rudolph Anders
Paul Strawn (as Robert O. Davis)
Addison Richards
Bruce Corvall
Hans Schumm
Foreign Official
Frederick Vogeding
Friend of Müller
Lucien Prival
Decker
Martin Kosleck
Karl 'Muller' Mullen
James Stephenson
Dr. Anton Rader
William Hopper
Student
Vera Lewis
American Tourist Going to Desert
Lester Sharpe
German Officer on Train
Egon Brecher
Larsch
Emmett Vogan
Instructor
Stuart Holmes
American Tourist
Billy McClain
Manservant at Ball
Robert Middlemass
Militant American Tourist
Cyril Ring
Spectator at Dart Throwing
William Worthington
Instructor in Montage
Nana Bryant
Mrs. Corvall
Howard Hickman
Walter Forbes
Grace Hayle
Mrs. O'Grady
Jack Mower
Man Opening Door
Henry Victor
Foreign Official
Joel McCrea
Barry Corvall
Stanley Ridges
Hamilton Peyton
Louis Adlon
Youth
Glen Cavender
Man in O'Grady Crowd
Nella Walker
Mrs. Peyton
Brenda Marshall
Brenda Ballard
Granville Bates
Phineas T. O'Grady
Selmer Jackson
Instructor
Edwin Stanley
Secretary of State
John Harron
American Tourist
George Irving
State Department Official
Wendell Niles
Radio Announcer Introducing Garrett
Ferdinand Schumann-Heink
Train Conductor
Jeffrey Lynn
Lowell Warrington
George Davis
Swiss Gendarme (uncredited)
Winifred Harris
Lady Ashford
George Reeves
Warrington's Secretary
Lionel Royce
Hoffmeyer
Wolfgang Zilzer
Heinrich
Harold Miller
Ball Guest
Jean De Briac
Waiter
Christian J. Frank
Minor Role