Stop letting him into that room!!! Seal off that room completely. Don’t let him sleep alone. Drag your mattress to the living room for him to sleep on while you sleep on the couch. Anything that was in or near the closet must stay in the sealed off room. Obviously, never let Chloe in again. Have you met her parents? Do they even exist? Contact your landlord. Who were the previous tenants? Did they leave suddenly? Get out asap. You can do most of this research from your car/work/ motel, etc.