Check out the rip

You approach the rip and realize that there's a small hole, and it appears to have been drilled there purposefully. You peek through.

The hole gives you a look into the room on the other side of the wall. Although the lights are on and the bed looks as comfortable as your own, there doesn't appear to be anyone in that room.

There's some more rustling sounds from the closet. If it is a rat, you'll probably need something with which to kill it. You look round the room, then see a poker by the fireplace. That should do the job.

Just then, you hear a noise in the hallway outside your door.