The Horrible Dr. Hichcock (1962)
The year is 1885, and necrophiliac Dr. Hitchcock likes to drug his wife for sexual funeral games. One day he accidentally administers an overdose and kills her. He leaves his home shattered. Several years later he remarries and returns. Discovering that his still beloved first wife is alive but insane and prematurely aged, he plans to use the blood of his new bride to rejuvenate and heal her.