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Se Jin, a lonely single woman who lives in a high-rise building in a suburb of Seoul, likes to spend her evenings looking out into the windows of the other apartments in the building across the street. As she begins to notice a pattern in the flickering of lights in some of the apartments, Se Jin is inadvertently ensnared in a series of suspicious deaths in her neighborhood. Could a supernatural force be responsible for the string of unexplainable deaths?

Genres: Horror & Supernatural, Korean Drama
Original title: 아파트
Country: Korea
Rating: PG-13