“You mustn’t blame yourself for the way the boy’s turned out, Vernon,” she said over lunch on the third day. “If there’s something rotten on the inside, there’s nothing anyone can do about it.”

Harry tried to concentrate on his food, but his hands shook and his face was starting to burn with anger. Remember the form, he told himself. Think about Hogsmeade. Don’t say anything. Don’t rise—

Aunt Marge reached for her glass of wine.

“It’s one of the basic rules of breeding,” she said. “You see it all the time with dogs. If there’s something wrong with the bitch, there’ll be something wrong with the pup—”

At that moment, the wineglass Aunt Marge was holding exploded in her hand. Shards of glass flew in every direction and Aunt Marge sputtered and blinked, her great ruddy face dripping.

“Marge!” squealed Aunt Petunia. “Marge, are you all right?”

“Not to worry,” grunted Aunt Marge, mopping her face with her napkin. “Must have squeezed it too hard. Did the same thing at Colonel Fubster’s the other day. No need to fuss, Petunia, I have a very firm grip . . . ”

But Aunt Petunia and Uncle Vernon were both looking at Harry suspiciously, so he decided he’d better skip dessert and escape from the table as soon as he could.

Outside in the hall, he leaned against the wall, breathing deeply. It had been a long time since he’d lost control and made something explode. He couldn’t afford to let it happen again. The Hogsmeade form wasn’t the only thing at stake—if he carried on like that, he’d be in trouble with the Ministry of Magic.

Harry was still an underage wizard, and he was forbidden by wizard law to do magic outside school. His record wasn’t exactly clean either. Only last summer he’d gotten an official warning that had stated quite clearly that if the Ministry got wind of any more magic in Privet Drive, Harry would face expulsion from Hogwarts.

He heard the Dursleys leaving the table and hurried upstairs out of the way.

• • •

Harry got through the next three days by forcing himself to think about his Handbook of Do-It-Yourself Broomcare whenever Aunt Marge started on him. This worked quite well, though it seemed to give him a glazed look, because Aunt Marge started voicing the opinion that he was mentally subnormal.

At last, at long last, the final evening of Marge’s stay arrived. Aunt Petunia cooked a fancy dinner and Uncle Vernon uncorked several bottles of wine. They got all the way through the soup and the salmon without a single mention of Harry’s faults; during the lemon meringue pie, Uncle Vernon bored them all with a long talk about Grunnings, his drill-making company; then Aunt Petunia made coffee and Uncle Vernon brought out a bottle of brandy.

“Can I tempt you, Marge?”

Aunt Marge had already had quite a lot of wine. Her huge face was very red.

“Just a small one, then,” she chuckled. “A bit more than that . . . and a bit more . . . that’s the ticket.”