The Black Pit of Dr. M (1959 Mexico)

 The Black Pit of Dr. M (1959 Mexico)

Misterios de ultratumba

Mexican director Fernando Mendez' 1958 horror masterpiece "The Black Pit of Dr. M" originally appeared under the title "Misterios de Ultratumba" ("Mysteries of the Afterlife"), certainly a more appropriate appellation. In this film, you see, Dr. Masali, head of a rural insane asylum, coerces a dying associate, Dr. Aldama, to show him the secrets of the realm of the dead, and then return him to the land of the living. But poor Dr. Masali should have known that when you make a deal with the soon-to-be-dead, things don't always turn out quite as expected! And they don't, in this very cleverly plotted story that conflates a predestined love affair, an insane gypsy woman, a cursed dagger, disfigurement by acid, transmigration and so much more.

(IMDB  ferbs54)