@lauren My parents owned an incredibly spooky cat who had at least three secret places in the house.
One was in the top-corner of their closet; she'd get up there by making three rapid jumps, two from the shelves and one from the army of suit jackets my father owned (they were heavy enough that she could catch herself and rebound before they swung away).
One was a secret nook in the garage.
We never found the third one.
@mtomczak I don't have a clue where she was this time. I hit every known spot and under beds, etc. Then suddenly she just reappeared, right in the middle of the room.