But Harry, remembering what the woman at the Magical Menagerie had said about rats living only three years, couldn’t help feeling that unless Scabbers had powers he had never revealed, he was reaching the end of his life. And despite Ron’s frequent complaints that Scabbers was both boring and useless, he was sure Ron would be very miserable if Scabbers died.

Christmas spirit was definitely thin on the ground in the Gryffindor common room that morning. Hermione had shut Crookshanks in her dormitory, but was furious with Ron for trying to kick him; Ron was still fuming about Crookshanks’s fresh attempt to eat Scabbers. Harry gave up trying to make them talk to each other and devoted himself to examining the Firebolt, which he had brought down to the common room with him. For some reason this seemed to annoy Hermione as well; she didn’t say anything, but she kept looking darkly at the broom as though it too had been criticizing her cat.

At lunchtime they went down to the Great Hall, to find that the House tables had been moved against the walls again, and that a single table, set for twelve, stood in the middle of the room. Professors Dumbledore, McGonagall, Snape, Sprout, and Flitwick were there, along with Filch, the caretaker, who had taken off his usual brown coat and was wearing a very old and rather moldy-looking tailcoat. There were only three other students, two extremely nervous-looking first years and a sullen-faced Slytherin fifth year.

“Merry Christmas!” said Dumbledore as Harry, Ron, and Hermione approached the table. “As there are so few of us, it seemed foolish to use the House tables . . . Sit down, sit down!”

Harry, Ron, and Hermione sat down side by side at the end of the table.

“Crackers!” said Dumbledore enthusiastically, offering the end of a large silver noisemaker to Snape, who took it reluctantly and tugged. With a bang like a gunshot, the cracker flew apart to reveal a large, pointed witch’s hat topped with a stuffed vulture.

Harry, remembering the boggart, caught Ron’s eye and they both grinned; Snape’s mouth thinned and he pushed the hat toward Dumbledore, who swapped it for his wizard’s hat at once.

“Dig in!” he advised the table, beaming around.

As Harry was helping himself to roast potatoes, the doors of the Great Hall opened again. It was Professor Trelawney, gliding toward them as though on wheels. She had put on a green sequined dress in honor of the occasion, making her look more than ever like a glittering, oversized dragonfly.

“Sibyll, this is a pleasant surprise!” said Dumbledore, standing up.