Mel Ferrer

Stephen Orlac

Christopher Lee

Nero the magician

Dany Carrel

Régina / Li-Lang

Lucile Saint-Simon

Louise Cochrane Orlac

Felix Aylmer

Dr. Francis Cochrane

Peter Reynolds

Mr. Felix

Basil Sydney

Maurice Seidelman

Campbell Singer

Inspector Henderson

Donald Wolfit

Professor Volchett

Donald Pleasence

Graham Coates

Peter Bennett

1st Member

George Merritt

2nd Member

Arnold Diamond

Dresser

Janina Faye

Child

Gertan Klauber

Fairground attendant

Walter Randall

Waiter

Yanilou

Emilie

David Peel

Pilot

Anita Sharp-Bolster

Volcheff's Assistant

Edouard Hemme

Ange

Mireille Perrey

Madame Aliberti

Manning Wilson

Inspector Jagger

Franca Bellj

Cell Whore (uncredited)

Peter Bennett

1st Member (uncredited)

Ernest Blyth

Nightclub Audience (uncredited)

Fred Davis

Detective (uncredited)

Arthur Dibbs

Nightclub Audience Member (uncredited)

Pierre Ferrari

Ambulance Attendant (uncredited)

Jean Fountaine

French Waiter (uncredited)

Charles Gilliard

Detective (uncredited)

Victor Harrington

Nightclub Audience (uncredited)

Juba Kennerley

Nightclub Audience (uncredited)

Aileen Lewis

Nightclub Audience (uncredited)

Pat Lewis

Nurse (uncredited)

George Merritt

2nd Member (uncredited)

John More

Concert Audience (uncredited)

Richard Neller

Surgeon in Clinic Hallway / Concert Audience (uncredited)

Terry Sartain

Man in Clinic Hallway (uncredited)

John Smart

Nightclub Audience (uncredited)

Emile Stemmler

Nightclub Waiter (uncredited)

Philip Stewart

Nightclub Audience (uncredited)

Fred Stroud

Concert Audience (uncredited)

John Tatham

Concert Audience (uncredited)

John Timberlake

Club Barman (uncredited)

Johnny Wyne

Nightclub Audience (uncredited)