Esoterica collector Dr Maitland buys an unusual skull from his ordinary source; the artifact is what remains of the Marquis De Sade. Much too soon, Maitland discovers that the skull is turning him into a frenzied killer.

Peter Cushingas Dr. Christopher Maitland
Christopher Leeas Sir Matthew Phillips
Patrick Wymarkas Anthony Marco
Jill Bennettas Jane Maitland
Nigel Greenas Inspector Wilson
George Coulourisas Dr. Londe
Patrick Mageeas Police Surgeon