Michael Rennie

Stefan

Patricia Medina

Zofia

Milly Vitale

Anna

David Knight

Tadek

Esmond Knight

Stricker

Christopher Lee

Brunner

John G. Heller

Fritz

Carl Jaffe

General

Peter Madden

Stanislaw

George Pravda

Karewski

Gordon Sterne

Margraaf

Carl Duering

Scientist

Harold Siddons

Master Bomber

George Pastell

Eryk

Henri Vidon

Konim

Stanley Zevic

Kubala

Gregory Dark

Franus

Jan Conrad

Wlodek

Tom Clegg

Anton

Robert Raikes

Dakota Pilot

Valerie White

German Forewoman

Geoffrey Chater

Min. of Defence

Julian Somers

Reichsführer

Jack Armstrong

German Scientist (uncredited)

Paul Beradi

German Scientist (uncredited)

Bob Bryan

German Scientist (uncredited)

Jack Cooper

German Scientist (uncredited)

George Curtis

German Scientist (uncredited)

Harry Drew

German Scientist (uncredited)

Patrick Halpin

German Scientist (uncredited)

Jack Hetherington

German Scientist (uncredited)

Jack Mandeville

German Scientist (uncredited)

Richard Neller

German Scientist (uncredited)

Jim Tyson

German Scientist (uncredited)

James Ure

German Scientist (uncredited)

Gertan Klauber

SS Guard (uncredited)

Martin Lyder

SS Officer (uncredited)

Richard Shaw

SS Officer (uncredited)

Jack Mandeville

German Soldier (uncredited)

Norman Mitchell

German Officer (uncredited)

Richard Pearson

Senior RAF Officer (uncredited)

Martin Shaban

Dentist (uncredited)

Norman Shelley

Senior Army Officer (uncredited)

Emile Stemmler

Forced Labour (uncredited)

Frank Thornton

British Scientist (uncredited)

Patrick Waddington

Air Marshall (uncredited)

Vernon Sewell

Director

Jack Hanley

Screenplay

Eryk Wlodek

Screenplay

Bernard Newman

Novel

Robert Sharples

Original Music Composer

Basil Emmott

Director of Photography