Horror / Sci-Fi (1958) 87 minutes ~ Color <br />A man and wife are terrorized by Mad Scientist Dr. Callistratus who was executed but has returned to life with a heart transplant. Along with his crippled assistant Carl, the 'anemic' Mad Scientist, believed to be a vampire, conducts blood deficiency research on the inmates of a prison hospital for the criminally insane to sustain his return to life. <br /> <br />Director: Henry Cass <br /> <br />Writers: Jimmy Sangster <br /> <br />Stars: Donald Wolfit, Vincent Ball, Barbara Shelley