A Tale of Two Sisters 2003

110 min. Directed by Kim Ji-woon.

A Tale of Two Sisters is a 2003 South Korean psychological horror film written and directed by Kim Jee-woon. The film is inspired by a Joseon-era folktale entitled "Janghwa Hongryeon jeon", which has been adapted to film several times. The plot focuses on a recently released patient from a mental institution who returns home with her sister, only to face disturbing events while living with their new unhinged stepmother.

Synopsis from Wikipedia, under CC BY-SA 4.0.