Joel McCrea
Role: Barry Corvall
Brenda Marshall
Role: Brenda Ballard
Jeffrey Lynn
Role: Lowell Warrington
James Stephenson
Role: Dr. Anton Rader
Howard Hickman
Role: Walter Forbes
Martin Kosleck
Role: Karl 'Muller' Mullen
Nana Bryant
Role: Mrs. Corvall
Rudolph Anders
Role: Paul Strawn (as Robert O. Davis)
Hans Heinrich von Twardowski
Role: Dr. Helm
George Davis
Role: Swiss Gendarme (uncredited)
George Bancroft
Role: Dudley Garrett
Stanley Ridges
Role: Hamilton Peyton
Lucien Prival
Role: Decker
Addison Richards
Role: Bruce Corvall
Edwin Stanley
Role: Secretary of State
Granville Bates
Role: Phineas T. O'Grady
Grace Hayle
Role: Mrs. O'Grady
Emmett Vogan
Role: Instructor
Enrique Acosta
Role: Geneva Restaurant Patron
Eddie Acuff
Role: Minor Role
Jimmy Aye
Role: Geneva Restaurant Patron
Fern Barry
Role: American Tourist
Sven Hugo Borg
Role: Chauffeur
Sidney Bracey
Role: Ship Steward
James Carlisle
Role: Ball Guest
Glen Cavender
Role: Man in O'Grady Crowd
Loia Cheaney
Role: American Tourist
James Conaty
Role: Ball Guest
Alice Connors
Role: American Tourist
Jean De Briac
Role: Waiter
Sarah Edwards
Role: Militant American Tourist
Christian J. Frank
Role: Minor Role
Arno Frey
Role: Foreign Officer
Frederick Giermann
Role: German Officer on Train
Eddie Graham
Role: Ball Guest
John Hamilton
Role: Code Room Instructor
Winifred Harris
Role: Lady Ashford
John Harron
Role: American Tourist
Stuart Holmes
Role: American Tourist
William Hopper
Role: Student
George Irving
Role: State Department Official
Selmer Jackson
Role: Instructor
Willy Kaufman
Role: Straubel
Glenn Langan
Role: Student
Vera Lewis
Role: American Tourist Going to Desert
Rolf Lindau
Role: Foreign Agent
Charles Frederick Lindsley
Role: Announcer (voice)
Al Lloyd
Role: American Tourist
Tony Martelli
Role: Geneva Bartender
Chris-Pin Martin
Role: Tunisian Guard
Billy McClain
Role: Manservant at Ball
Robert Middlemass
Role: Militant American Tourist
Harold Miller
Role: Ball Guest
Jack Mower
Role: Man Opening Door
Wendell Niles
Role: Radio Announcer Introducing Garrett
George Reeves
Role: Warrington's Secretary
John J. Richardson
Role: Man in O'Grady Crowd
Cyril Ring
Role: Spectator at Dart Throwing
Lionel Royce
Role: Hoffmeyer
Milton Royce
Role: Ball Guest
Sally Sage
Role: American Tourist
Alexander Schoenberg
Role: Man at Canteen
Ferdinand Schumann-Heink
Role: Train Conductor
Hans Schumm
Role: Foreign Official
Lester Sharpe
Role: German Officer on Train
Bert Stevens
Role: Student
Don Turner
Role: Pilot with Map
Dorothy Vaughan
Role: Stout Woman Bumped by Garrett
Henry Victor
Role: Foreign Official
Frederick Vogeding
Role: Friend of Müller
Wilhelm von Brincken
Role: Foreign Official
Nella Walker
Role: Mrs. Peyton
Lottie Williams
Role: American Tourist Wanting Boat Out
William Worthington
Role: Instructor in Montage
Wolfgang Zilzer
Role: Heinrich
