Treasure hunting. I've got 2 bedrooms arranged in a suite, kind of like old motels, where 2 rooms will have adjoining doors. That's also the all the closets are on. So you've got adjoining door, door to the closet in the master bedroom, and on the other side is the door to the closet of the other bedroom. The depth of the closets is on the guest bedroom side, so when you step out of the master bedrooom and into the guest bedroom, you're standing in a sort of 2' deep alcove. Got the picture?
Now here's where it gets interesting: For some reason the ceiling of the little "alcove" is 8.5" lower than the ceiling in either of the bedrooms. It could be for a duct except that all the ductwork is below the floor. There is no practical purpose for this added drywall work--unless it is to create a roughly 8x24x48" void to serve as a place to hide something. This makes me curious. Just not curious enough to climb up into an attic that's got to be around a million degrees this time of year and not curious enough to cut a hole in the drywall. Well, curious enough to cut a hole in the drywall. Just not curious enough to repair and repaint a hole in the drywall. But one day...it will be cool and I'll have time on my hands and we'll see.
That's probably the other thing: Schroedinger's Treasure. Right now there could be something amazingly cool up there, but very likely there's nothing up there. So as long as I don't check, I can imagine something cool up there. Maybe not Schroedinger, maybe Heisenberg Uncertainty Drywall.