When several women are found mutilated and murdered, the Paris police are baffled as to who the killer may be. All evidence points to Dupin, but soon it becomes apparent that it is someone (or something) stronger and deadlier than a human.
Karl Malden
as Dr. Marais
Claude Dauphin
as Insp. Bonnard
Patricia Medina
as Jeanette
Steve Forrest
as Prof. Paul Dupin
Allyn Ann McLerie
as Yvonne (as Allyn McLerie)
Anthony Caruso
as Jacques the One-Eyed
Veola Vonn
as Arlette
Dolores Dorn
as Camille
Merv Griffin
as Georges Brevert
Paul Richards
as Rene the Knife-thrower
Rolfe Sedan
as LeBon (as Rolphe Sedan)
Erin O'Brien-Moore
as Wardrobe Woman
