Suddenly at Midnight (1981)

Suddenly at Midnight 1981 / 깊은 밤 갑자기 1981 / Gipeun Bam Gapjagi , Gipeun Bam Gabjagi , Suddenly In The Dark , Suddenly in Dark Night

Kang Yu Jin, a wealthy biology professor doing a butterfly field study, takes in a new housemaid; the young woman, Mi Ok, is the daughter of a shaman priestess who recently died in a house fire. At first, Yu Jin and his wife, Seon Hee, welcome Mi Ok into their home, but Seon Hee begins to have misgivings when she sees a strange wooden doll that the maid has brought with her. Having suffered from nightmares about exactly the same doll, Seon Hee becomes increasingly suspicious and paranoid that Mi Ok is trying to kill her and usurp her household. In a sudden fit of madness, Seon Hee causes Mi Ok to fall to her death. From then on, Seon Hee is tormented horribly by visions of the doll attacking her, and it starts to take a great toll on her sanity. Is it actually happening, or just all in the girl's mind? (Source: Wikipedia)