Aaron’s spooked. Late night before last I heard 4 distinct knocks seeming to come from the middle of the room and there was no source for them that I know of (and I know this apartment well). I mentioned it and late last night Aaron insisted he saw two shadows.
Aaron sometimes won’t sleep in his room because he insists he hears things. I used to assume it was upstairs or outside. A few years ago Marty and I were in his room (he was sleeping in our room) and we heard loud footsteps and the door jerked, someone trying to open it. We thought it was Aaron but when we opened the door nothing was there and he was sound asleep.