And Peter could laugh at the references. He was tempted to make one for himself, but wasn't sure he knew the material well enough. Instead he decided to give one more hint. "Don't worry. Just remember why you got this detention and what I've told you both needs solving and you'll get through this with flying colors."

There wasn't much else to do. He had plans for observing them, but they were either already in place or required charms he didn't want to cast right yet and give away what he was up to.