A Tale of Two Sisters
In A Tale of Two Sisters, Su-mi (Yeom-Jeong-ah) watches over her timid younger sibling Su-yeon (Su-jeong Lim); both sisters hate their evil stepmother Eun-joo (Kap-su Kim), who once served as their late mother's nurse. It is revealed that Su-mi suffers from dissociative identity disorder, acting as both Su-yeon and Eun-joo after experiencing the traumatic loss of her sister, who was crushed by a wardrobe with her mother's dead body hanging inside. However, we later learn that Su-yeon actually is a ghost, who traps and kills the real Eun-joo offscreen.
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