Kirk Douglas

Dr. Rolf Pedersen

Richard Harris

Knut Straud

Ulla Jacobsson

Anna Pedersen

Michael Redgrave

Uncle

David Weston

Arne

Anton Diffring

Major Frick

Eric Porter

Terboven

Mervyn Johns

Col. Wilkinson

Jennifer Hilary

Sigrid

Roy Dotrice

Jensen

Barry Jones

Professor Logan

Ralph Michael

Nilssen

Geoffrey Keen

General Bolt

Maurice Denham

Doctor

Wolf Frees

Knippelberg

Robert Ayres

General Courts

Sebastian Breaks

Gunnar

John Golightly

Freddy

Alan Howard

Oli

Patrick Jordan

Henrik

William Marlowe

Claus

Brook Williams

Einar

David Davies

Captain of "Galtesund"

Karl Stepanek

Hartmuller

Faith Brook

Woman on Bus

Elvi Hale

Mrs. Sandersen

Gerard Heinz

Erhardt

Victor Beaumont

German Sergeant

Philo Hauser

Businessman

George Murcell

Sturmfuhrer

Russell Waters

Mr. Sandersen

Jan Conrad

Watchman in Factory

Annette Andre

Girl Student (uncredited)