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