He wanted to skip Divination to keep practicing, but Hermione refused point-blank to skive off Arithmancy, and there was no point in staying without her. He therefore had to endure over an hour of Professor Trelawney, who spent half the lesson telling everyone that the position of Mars with relation to Saturn at that moment meant that people born in July were in great danger of sudden, violent deaths.

“Well, that’s good,” said Harry loudly, his temper getting the better of him, “just as long as it’s not drawn-out. I don’t want to suffer.”

Ron looked for a moment as though he was going to laugh; he certainly caught Harry’s eye for the first time in days, but Harry was still feeling too resentful toward Ron to care. He spent the rest of the lesson trying to attract small objects toward him under the table with his wand. He managed to make a fly zoom straight into his hand, though he wasn’t entirely sure that was his prowess at Summoning Charms—perhaps the fly was just stupid.

He forced down some dinner after Divination, then returned to the empty classroom with Hermione, using the Invisibility Cloak to avoid the teachers. They kept practicing until past midnight. They would have stayed longer, but Peeves turned up and, pretending to think that Harry wanted things thrown at him, started chucking chairs across the room. Harry and Hermione left in a hurry before the noise attracted Filch, and went back to the Gryffindor common room, which was now mercifully empty.

At two o’clock in the morning, Harry stood near the fireplace, surrounded by heaps of objects: books, quills, several upturned chairs, an old set of Gobstones, and Neville’s toad, Trevor. Only in the last hour had Harry really got the hang of the Summoning Charm.

“That’s better, Harry, that’s loads better,” Hermione said, looking exhausted but very pleased.

“Well, now we know what to do next time I can’t manage a spell,” Harry said, throwing a rune dictionary back to Hermione, so he could try again, “threaten me with a dragon. Right . . . ” He raised his wand once more. “Accio Dictionary!”

The heavy book soared out of Hermione’s hand, flew across the room, and Harry caught it.

“Harry, I really think you’ve got it!” said Hermione delightedly.

“Just as long as it works tomorrow,” Harry said. “The Firebolt’s going to be much farther away than the stuff in here, it’s going to be in the castle, and I’m going to be out there on the grounds . . . ”

“That doesn’t matter,” said Hermione firmly “Just as long as you’re concentrating really, really hard on it, it’ll come. Harry, we’d better get some sleep . . . you’re going to need it.”