"Let's see. Rosier's busy with a new puppet, I don't know what Mulciber's gotten up to. Snape's got his own little plot in the works, leaving me to my lonesome. So I thought my lonesome would stake out a patch of wall to see what happened in the lower levels of the castle after dinner."
He paused, and looked around before he pushed away from the wall.
"Seems to be a whole lot of nothing, so I might find my way to another patch of wall. You're welcome to keep guarding this one."