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