Under a loose floorboard in the closet. [ It's not like he was trying to help clean, but when you see a suspiciously loose floorboard in the house you're squatting in, you're bound to investigate... right? There could be something useful in it. ]

The rest of the skeleton is there, but I thought this was enough. [ He leans against the doorframe, because standing hurts less and less everyday, but he's still healing from a deep muscle injury. ]

There's no sign of trauma that I saw. [ He didn't look that closely, admittedly. ]