Christopher Lee

Col. Charles Bingham

Peter Cushing

Sir Mark Ashley

Diana Dors

Anna Harb

Georgia Brown

Joan Foster

Keith Barron

Dr. Haynes

Gwyneth Strong

Mary Valley

Fulton Mackay

Cameron

Michael Gambon

Insp. Grant

Duncan Lamont

Dr. Knight

Kathleen Byron

Dr. Rose

John Robinson

Lord Fawnlee

Morris Perry

Dr Yeats

Shelagh Fraser

Mrs Alison

Andrew McCulloch

Malcolm

Paul Humpoletz

Angus

Stanley Lebor

Policeman

Beatrice Kane

Helen Van Traylen

Janet Bruce

Naureen Stokes

Geoffrey Denton

Paul Anderson

Peter Sasdy

Director

Brian Hayles

Screenplay

Christopher Lee

Producer

Anthony Nelson Keys

Producer

Colin Grimes

Art Direction

Weston Drury Jr.

Casting

Eddie Knight

Makeup Artist

Kenneth Talbot

Director of Photography

Malcolm Williamson

Original Music Composer

Les Bowie

Special Effects

John Blackburn

Novel

Keith Palmer

Editor

Pat McDermott

Hairstylist

Ariel Levy

Assistant Director