The exam results came out on the last day of term. Harry, Ron, and Hermione had passed every subject. Harry was amazed that he had got through Potions. He had a shrewd suspicion that Dumbledore might have stepped in to stop Snape failing him on purpose. Snape's behavior toward Harry over the past week had been quite alarming. Harry wouldn't have thought it possible that Snape's dislike for him could increase, but it certainly had. A muscle twitched unpleasantly at the corner of Snape's thin mouth every time he looked at Harry, and he was constantly flexing his fingers, as though itching to place them around Harry's throat.
¡°Innocent, but scared!¡± squealed Pettigrew. ¡°If Voldemort's supporters were after me, it was because I put one of their best men in Azkaban ¡ª the spy, Sirius Black!¡±
Hermione was still looking at him as though worried about his sanity. ¡°I know it sounds crazy,¡± said Harry flatly. He turned to took at Buckbeak, who was digging his beak into the ground, apparently searching for worms. But he wasn't really watching Buckbeak.