Halloween passed without an incident, so Harry slowly started to relax. Maybe Katy had been an isolated incident? Perhaps he really had a chance to catch up with his schoolwork, spend time with his friends, and enhance his brewing abilities with Severus. If it was only the two of them, Snape was actually a halfway decent teacher. It helped, of course, that Harry wanted to understand the potions they were about to make for the first time in his life.