James Mason

Ulysses Diello

Danielle Darrieux

Condesa Anna Staviska

Michael Rennie

Colin Travers

Walter Hampden

Sir Frederic Taylor

Oskar Karlweis

L. C. Moyzisch

Herbert Berghof

Col. von Richter

John Wengraf

Count Franz Von Papen

Ben Astar

Siebert

Roger Plowden

Keith Macfadden

Diane Adrian

Singer on French Record (voice)

Patrick Whyte

Code Clerk

Hanna Axmann-Rezzori

David Bauer

Lawrence Dobkin

Martín Garralaga

Lumsden Hare

Richard Loo

Lester Matthews

Keith McConnell

Frank McLure

Charles Meakin

Alberto Morin

Nestor Paiva

Michael Pate

Konstantin Shayne

Ivan Triesault

Otto Waldis

Alfred Zeisler

Stuart Hall

British Military Attaché (uncredited)

Norbert Brodine

Director of Photography

Joseph L. Mankiewicz

Director

Michael Wilson

Screenplay

Bernard Herrmann

Original Music Composer

Otto Lang

Producer

L.C. Moyzisch

Novel

James B. Clark

Editor

Lyle R. Wheeler

Art Direction

Ben Nye

Makeup Artist

George W. Davis

Art Direction

Thomas Little

Set Decoration

W.D. Flick

Sound

Charles LeMaire

Wardrobe Designer

Walter M. Scott

Set Decoration

Roger Heman Sr.

Sound