Kon Aeuy Madai Ahp (1980)

The film's story is about a young boy who lived alone with his mother in a big house on a remote location. One night he finds out his mother's well-kept secret by chance and he realizes that she is the evil spirit Arp. After that night, the boy lives in terror. He becomes afraid that his mother will kill him any time, but pretends that he does not know his mother's secret. The boy wonders what will become of him in the future, living with malevolent Arp under the same roof and what will happen if the secret becomes known and he hears everyone say: Your mother is an Arp.