Patrick O'Neal

Richard Cutting

Joan Hackett

Dominique Laurant

John Gielgud

Curt Valayan

Herbert Lom

Matt Wilson

Eric Portman

Notary

Peter van Eyck

Walter Green

Oskar Homolka

Inspector Ruff

Leon Greene

The Big Man

Kent Smith

Mr. Eversley

Philip Ober

Bohlen

Fifi D'Orsay

Mrs. Hennie

Éva Szörényi

Landlady (as Eva Soreny)

Cynthia O'Neal

Felice Valayan (as Cynthia Baxter)

Martin Miller

Police Chief (uncredited)

Charles H. Radilak

Manager (uncredited)

Erik Sorenson

Bellboy (uncredited)

Betty Bresler

Secretary (uncredited)

Joanne Ludden

Receptionist (uncredited)

Walter Friedel

Secretary (uncredited)

Karl Bruck

Waiter (uncredited)