Eccentric director of routine low-budget horror films, with a flair for self-promotion. Castle's standout efforts include the B thriller, "When Strangers Marry" (1944), with Robert Mitchum in his first important role and the camp gem, "House on Haunted Hill" (1958). Like latter day P.T Barnum, upon whom he modeled himself, Castle lured audiences to his chillers by appearing in their trailers and psyching the audience up to be scared. Most of his films included outrageous gimmicks such as an insurance policy against death by fright for "Macabre" (1957), skeletons that whistled over the audience in a process called "Emergo" during critical scenes in "House on Haunted Hill" and his most audacious stunt, "Percepto" which literally shocked the audience by wiring selected seats in the theater with electricity and administering mild jolts during moments in "The Tingler" (1959). Castle is also noted as the producer of the psychological thriller, "Rosemary's Baby" (1968).