El fantasma del convento ("The Phantom of the Monastery") is a Mexican film. It was directed by Fernando de Fuentes.
Plot[]
Cristina, the wife of Eduardo, tries to seduce their friend, Alfonso. One night, they lose their way and are guided by a mysterious stranger to an eerie monastery. Over a meal, the old Father Superior tells them the story of a monk who seduced a friend's wife: when he died, the monk could not find peace in death and returned to his cursed cell. Alfonso, about to give in to Cristina's advances, finds the fateful cell and enters it. The sinful monk's mummified corpse gestures towards a book dripping with blood and when the cadaver of Eduardo appears to him as well, Alfonso sinks into a delirium. When he wakes, the trio find out that the monastery has been a ruin for many years and the crypt with the mummified monk has become a tourist attraction. During a final meal in the spectral setting, Cristina accuses Alfonso of cowardice.