An occult investigator buys the 150-year-old skull of the Marquis de Sade, which turns out to be possessed by evil spirits.
Peter Cushing
as Dr. Christopher Maitland
Christopher Lee
as Sir Matthew Phillips
Patrick Wymark
as Anthony Marco
Jill Bennett
as Jane Maitland
Peter Woodthorpe
as Bert Travers, Marco's Landlord
Nigel Green
as Inspector Wilson
April Olrich
as French Girl
George Coulouris
as Dr. Londe
Maurice Good
as Pierre, Phrenologist
Patrick Magee
as Police Surgeon
Frank Forsyth
as Judge
Michael Gough
as Auctioneer
