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