It took him a while to persuade her to wake up and then to look at him, as she kept shuffling around on her perch, showing him her tail. She was evidently still furious about his lack of gratitude the previous night. In the end, it was Harry suggesting she might be too tired, and that perhaps he would ask Ron to borrow Pigwidgeon, that made her stick out her leg and allow him to tie the letter to it.

“Just find him, all right?” Harry said, stroking her back as he carried her on his arm to one of the holes in the wall. “Before the dementors do.”

She nipped his finger, perhaps rather harder than she would ordinarily have done, but hooted softly in a reassuring sort of way all the same. Then she spread her wings and took off into the sunrise. Harry watched her fly out of sight with the familiar feeling of unease back in his stomach. He had been so sure that Sirius’s reply would alleviate his worries rather than increasing them.

“That was a lie, Harry,” said Hermione sharply over breakfast, when he told her and Ron what he had done. “You didn’t imagine your scar hurting and you know it.”

“So what?” said Harry. “He’s not going back to Azkaban because of me.”

“Drop it,” said Ron sharply to Hermione as she opened her mouth to argue some more, and for once, Hermione heeded him, and fell silent.

Harry did his best not to worry about Sirius over the next couple of weeks. True, he could not stop himself from looking anxiously around every morning when the post owls arrived, nor, late at night before he went to sleep, prevent himself from seeing horrible visions of Sirius, cornered by dementors down some dark London street, but betweentimes he tried to keep his mind off his godfather. He wished he still had Quidditch to distract him; nothing worked so well on a troubled mind as a good, hard training session. On the other hand, their lessons were becoming more difficult and demanding than ever before, particularly Moody’s Defense Against the Dark Arts.

To their surprise, Professor Moody had announced that he would be putting the Imperius Curse on each of them in turn, to demonstrate its power and to see whether they could resist its effects.

“But—but you said it’s illegal, Professor,” said Hermione uncertainly as Moody cleared away the desks with a sweep of his wand, leaving a large clear space in the middle of the room. “You said—to use it against another human was—”

“Dumbledore wants you taught what it feels like,” said Moody, his magical eye swiveling onto Hermione and fixing her with an eerie, unblinking stare. “If you’d rather learn the hard way—when someone’s putting it on you so they can control you completely—fine by me. You’re excused. Off you go.”