Thunder Rock

Michael Redgrave

— David Charleston

Barbara Mullen

— Ellen Kirby

James Mason

— Streeter

Lilli Palmer

— Melanie Kurtz

Finlay Currie

— Capt. Joshua Stuart

Frederick Valk

— Dr. Kurtz

Sybille Binder

— Anne Marie

Frederick Cooper

— Briggs

Jean Shepeard

— Mrs. Briggs

Barry Morse

— Robert

George Carney

— Harry

Miles Malleson

— Chairman of Directors

Bryan Herbert

— Flanning

James Pirrie

— New Pilot

A.E. Matthews

— Mr. Kirby

Olive Sloane

— Woman Director

Tommy Duggan

— Office Clerk

Tony Quinn

— Office Clerk

Harold Anstruther

— British Consul

Alfred Sangster

— Director

Gerard Heinz

— Dr. Hartmann (uncredited)

Vi Kaley

— Old Woman in Cell (uncredited)

David Keir

— 1st Magistrate (uncredited)

Andreas Malandrinos

— Italian Police Chief (uncredited)

Arnold Marlé

— President of the Medical Society (uncredited)

Bernard Rebel

— Italian Passenger (uncredited)

Victor Rietti

— Doctor (uncredited)

Raymond Rollett

— 1st Judge (uncredited)

Milo Sperber

— Mr. Hirohiti (uncredited)

George Spence

— Man Asleep in Theatre (uncredited)