The Blood Demon (Die Schlangengrube und das Pendel in West Germany), also known as The Torture Chamber of Dr. Sadism, The Snake Pit and the Pendulum, and Castle of the Walking Dead, is a 1967 West German horror film directed by Harald Reinl and starring Christopher Lee, Karin Dor, and Lex Barker.The film, written by Manfred R. Köhler, is based on Edgar Allan Poe's 1842 short story "The Pit and the Pendulum" and concerns the saga of Count Regula (Lee) who, after being drawn and quartered for murdering 12 maidens, returns to life seeking revenge.It was shot at the Bavaria Studios in Munich. The film's sets were designed by the art directors Gabriel Pellon and Rolf Zehetbauer.