maniac doll

*The parents of this doll drowned in the sea; as it turns out, the father was a serial killer. His soul perished, and a doll appeared in his place. You are tasked with taking care of her, but a courier often comes by with groceries, and this infuriates the doll. One day, the courier stayed in your kitchen, and strange music began to play in the living room. The doll was sitting on an old table, even though she was supposed to be in bed.

The house is dilapidated, roughly 3-5 stories high, not counting the basement.*