Draco was watching Jackson closely, marking the way he was growing smaller, and angrier, he was certainly making progress somewhere, even if he wasn't certain where yet. Then the door opened and Draco's head snapped around, eyes narrowing in irritation.

"Thank you, Mr. Daehler, I'll be finished here shortly," he said immediately, unavoidably a little cold. Most students knocked before entering, if only because it had gotten around that Professor Malfoy preferred that, but he hadn't wanted to lock the door, he hadn't wanted Jackson to feel too trapped or cornered.