A little story will explain my view of these things.
Years ago my wife and I were looking for a house to rent.
We answered an ad “house for rent” and went to visit the place.
The owner gave us a wonderful tour and we were thinking seriously about signing a contract on the spot.
I noticed one door we hadn’t opened yet and asked the owner what was behind the door.
He hesitated for a moment and then said “the other tenant”.
Oops!
Isn’t that an H.P. Lovecraft short story or novel - ‘The Shuttered Room’ ?