Professor Stokes lets himself into Adam’s old room in the West Wing, where he finds no trace of the former occupant. The damage Adam caused when he escaped from his room has been repaired. Perhaps Carolyn bribed Harry Johnson to do the work.
Apparently Carolyn doesn't remember that Adam was artificially created. Maybe she thinks he didn't say goodbye because she doesn't remember that either.
Yes, great scene with Willie and Maggie. Despite Maggie's defiant insistence that she wouldn't eat any food, Willie goes off to get some. David investigates the secret room and finds-- well, someone, just not who he expected.
Willie is about to leave the Old House with a bag of food when Stokes returns to report his failure to Barnabas, who isn’t home. Then the sudden wind comes up again, making Willie extremely nervous (the curtains billow even though the windows are shut). Typically, Stokes comments, Fascinating--very fascinating. We must be in the presence of an astral projection, he decides, really scaring Willie. The wind dies down, but Willie runs off anyway, leaving Stokes in the middle of the drawing room murmuring (typically), Fascinating...utterly fascinating.
All I can say about David's behavior is that his aunt has brought him up to mind his manners.