1962 Italian gothic horror, L'orribile segreto del Dr. Hichcock, from director Riccardo Freda.
"The story is set in 1885 and concerns a Dr. Hichcock, a necrophiliac whose horrible secret of the title involves drugging his wife for sexual funeral games. One day he accidentally administers an overdose and kills her. Several years later he remarries, with the intention of using the blood of his new bride to bring his first wife's rotting corpse back to life."
The film is much more restrained than that sounds!