"You'll have to forgive Draco," Theodore says, looking as though he's biting back his own smile. "He is a demon, after all. We both are." He flicks his wrist. In a moment, the drying blood from when Draco slit his throat has vanished, and when Hermione glances at the waiting room clock she sees it's been reset to two minutes before the entire incident occurred. Then he's popped out himself.