"Okay, it's not just me then? When he started to put up the weird paintings up I thought it was weird, but he said that I just didn't understand art. I mean I'm just a face on a wall, so I figured he was right…" Face on the Wall says, a little concerned.
At the end of the hallway is a door with a frame set into it, and in front of that is a table with what looks to be a small broken slab of stone.
Face on the Wall appears from a nearby placard, and after clearing his throat and talking in a rehearsed manner says, "Oh no! It seems that someone broke one of the paintings!"
Can you put these pieces back together to form a square?