James Mason

Character: Dr. John Polidori

Leonard Whiting

Character: Victor Frankenstein

David McCallum

Character: Dr. Clervall

Jane Seymour

Character: Agatha / Prima

Nicola Pagett

Character: Elizabeth Fanschawe

Michael Sarrazin

Character: The Creature

Michael Wilding

Character: Sir Richard Fanshawe

Tom Baker

Character: Sea Captain

Clarissa Kaye-Mason

Character: Lady Fanschawe

Agnes Moorehead

Character: Mrs. Blair

Margaret Leighton

Character: Francoise DuVal

Ralph Richardson

Character: Mr. Lacey

John Gielgud

Character: Chief Constable

Peter Sallis

Character: Priest

Yootha Joyce

Character: Hospital Matron

Dallas Adams

Character: Felix

Julian Barnes

Character: Young Man

Karl Howman

Character: William Frankenstein