The Phantom of the Monastery (1934)

Alfonso, Eduardo, and Cristina wander into a mysterious forest and soon find themselves lost. A peculiar monk discovers them and leads them to a decrepit convent. Once inside, their personalities begin to shift, particularly Cristina, who unexpectedly attempts to seduce Alfonso, echoing a tale recounted by an elderly monk. As the trio struggles to break free from the convent's grip, Alfonso becomes imprisoned, plunging them into a series of bizarre and eerie occurrences that threaten their sanity and lives.