Espionage Agent

Joel McCrea

Barry Corvall

Brenda Marshall

Brenda Ballard

Jeffrey Lynn

Lowell Warrington

Nana Bryant

Mrs. Corvall

Martin Kosleck

Karl 'Muller' Mullen

Rudolph Anders

Paul Strawn (as Robert O. Davis)

James Stephenson

Dr. Anton Rader

George Bancroft

Dudley Garrett

Stanley Ridges

Hamilton Peyton

Howard Hickman

Walter Forbes

Hans Heinrich von Twardowski

Dr. Helm

George Davis

Swiss Gendarme (uncredited)

Lucien Prival

Decker

Addison Richards

Bruce Corvall

Edwin Stanley

Secretary of State

Granville Bates

Phineas T. O'Grady

Grace Hayle

Mrs. O'Grady

Egon Brecher

Larsch

Emmett Vogan

Instructor

Enrique Acosta

Geneva Restaurant Patron

Eddie Acuff

Minor Role

Louis Adlon

Youth

Jimmy Aye

Geneva Restaurant Patron

Fern Barry

American Tourist

Sven Hugo Borg

Chauffeur

Sidney Bracey

Ship Steward

James Carlisle

Ball Guest

Glen Cavender

Man in O'Grady Crowd

Loia Cheaney

American Tourist

James Conaty

Ball Guest

Alice Connors

American Tourist

Jean De Briac

Waiter

Sarah Edwards

Militant American Tourist

Christian J. Frank

Minor Role

Arno Frey

Foreign Officer

Frederick Giermann

German Officer on Train

Eddie Graham

Ball Guest

John Hamilton

Code Room Instructor

Winifred Harris

Lady Ashford

John Harron

American Tourist