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

Robert Ayres

General Courts

Alan Howard

Oli

Patrick Jordan

Henrik

William Marlowe

Claus

Karl Stepanek

Hartmuller

Faith Brook

Woman on Bus

Elvi Hale

Mrs. Sandersen

Gerard Heinz

Erhardt

Russell Waters

Mr. Sandersen

Annette Andre

Girl Student (uncredited)