Jon watched the scene unfold, eyebrows raising in surprise. From what he'd seen, Gabe was unpredictable on his good days so who knew what else would pop up? This whole situation made Jon yearn for the comfort of his room, where the most dangerous thing he had to worry about was tripping over Tom's toys or stepping in a hairball.
He did as suggested, moving slowly into the room. When nothing happened, he closed the door behind him and looked up at William. "Any clue as to where our Potions Master is holed up? I haven't heard anything."