Jack of Diamonds

George Hamilton

— Jeffrey Hill

Joseph Cotten

— Ace

Marie Laforêt

— Olga Vodkine

Maurice Evans

— Nicolai Vodkine

Wolfgang Preiss

— Wilhelm Von Schenk

Karl Lieffen

— Helmut

Alexander Hegarth

— Brügger

Charlie Hickman

— Lieutenant Gilder

Eduard Linkers

— Geisling

Al Hoosmann

— Police Sergeant

Bob Cheslock

— Kauffmann

Carroll Baker

— Carroll Baker

Zsa Zsa Gabor

— Zsa Zsa Gabor

Lilli Palmer

— Lilli Palmer

Arthur Brauss

— Insurance Company Employee (uncredited)

Robert Naegele

— Ticket Agent at Airport (uncredited)

Philip Roye

— New York Police Sergeant (uncredited)

Udo N. von Tyrol

— French Policeman (uncredited)

Monika Zinnenberg

— Ticket Agent at Airport (uncredited)