Genre: Crime, Horror, Thriller
Director: Robert Day
Writer: Jean Scott Rogers, Jean Scott Rogers
Stars: Boris Karloff, Betta St. John, Christopher Lee, Finlay Currie, Adrienne Corri
Countries: United Kingdom, United States
In an effort to relieve the suffering of surgery patients, Dr. Thomas Bolton painstakingly develops an opium-based anesthetic, to which he gradually becomes addicted. In order to provide a continual supply of chemicals to continue his experiments and support his addiction, he falls in with a den of murderers who use his signature to sell cadavers to the local hospital.