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