Black Pit of Dr. M

“Plunges you into a new concept of terror ... and sudden shocks!!”

Two doctors swear a pact that whichever of them dies first will come back, if he can, and tell the other how to glimpse the afterlife while still alive. Dr. Eduardo Jiménez (Gastón Santos) and Dr. Mazali (Rafael Bertrand) keep working side by side, with an orderly named Elmer (Carlos Ancira) around them. Fernando Méndez ties the two men together with that promise, and the film waits to see what each is willing to do to hold the other to it.