George Segal

Character: Quiller

Alec Guinness

Character: Pol

Max von Sydow

Character: Oktober

Senta Berger

Character: Inge Lindt

George Sanders

Character: Gibbs

Robert Helpmann

Character: Weng

Robert Flemyng

Character: Rushington

Peter Carsten

Character: Hengel

Ernst Walder

Character: Grauber

Edith Schneider

Character: Headmistress

Philip Madoc

Character: Oktober's Man

Herbert Fux

Character: Oktobers Gefolgsmann

Herbert Stass

Character: Kenneth Lindsay Jones

Günter Meisner

Character: Hassler

John Rees

Character: Oktober's Man

Bernard Barnsley

Character: Mr. 'F' (Uncredited)

Victor Beaumont

Character: Weiss (Uncredited)

Otto Friese

Character: Waiter (Uncredited)

Paul Hansard

Character: Doctor Loewe (Uncredited)

Philo Hauser

Character: Night Porter (Uncredited)

John Moulder-Brown

Character: Pupil with Inge (Uncredited)

Hans Schwarz Jr.

Character: Barman (Uncredited)

Claus Tinney

Character: Hughes (Uncredited)