But they couldn't. Exams were nearly upon them, and instead of lazing around outside, the students were forced to remain inside the castle, trying to bully their brains into concentrating while enticing wafts of summer air drifted in through the windows. Even Fred and George Weasley had been spotted working; they were about to take their O.W.L.s (Ordinary Wizarding Levels). Percy was getting ready to take his N.E.W.T.s (Nastily Exhausting Wizarding Tests), the highest qualification Hogwarts offered. As Percy hoped to enter the Ministry of Magic, he needed top grades. He was becoming increasingly edgy, and gave very severe punishments to anybody who disturbed the quiet of the common room in the evenings. In fact, the only person who seemed more anxious than Percy was Hermione.
Harry didn't move. There was a pounding in his ears.
Hermione had just come in, wearing her dressing gown and carrying Crookshanks, who was looking very grumpy, with a string of tinsel tied around his neck.