Puppetmaster

You walk cautiously up to the large house and knock on the door three times. You wait a bit then knock again.
There is no answer. Slowly, you twist the brass doorknob and open the door a crack. It smells musty and stale inside, and it is totally dark, but your curiosity gets the better of your fear and you step inside. You leave the door open to let in some moonlight, but even still it is very difficult to see what is in the room. You walk a little farther inside and notice a light coming from a door at the end of a hall...