Kyung Min, a woman living alone in a studio apartment, becomes alarmed when she finds her door lock cover left open. After changing the password, she hears someone trying to unlock the door and calls the police, but they dismiss her concerns. Days later, with more signs of intrusion and a murder nearby, she realizes she's not safe and the police are no help. Determined to find the truth, she begins investigating herself, uncovering clues like fingerprints on the keypad and a cigarette butt near her door.
(Source: MyDramaList)
~~ Remake of the Spanish film "Sleep Tight" (Mientras duermes) [2011].
