He let go of her and stepped back, the anger remained in his eyes. Hermione rubbed her wrist and contorted her face in pain. Shit, he had a strong grip. Then suddenly, she heard a crazy laugh and lifted her head to see what had gotten into him. His face faced the wall, and he looked like he was about to punch right into it. Malfoy stopped laughing and grabbed his head, though his posture was still tense.