While I was tacking down some new carpet in the foyer I saw the gymnasium slide past the door. People I had never seen before were poking about the free weights. That explains the leftovers in the fridge.
Before leaving I double-checked the tripwires and the pressure in the helium tanks. Something scratched and mewled behind the boudoir door. Best leave that for the guests to find.
Got an encrypted message this morning from an agent at Cambridge. They are already working on an app to track the guests online. Excellent.