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