“Ginny’s got a point,” said Hermione, perking up at once. “We ought to check that there’s nothing odd about it. I mean, all these funny instructions, who knows?”
“Hey!” said Harry indignantly, as she pulled his copy of Advanced Potion-Making out of his bag and raised her wand.
“Specialis Revelio!” she said, rapping it smartly on the front cover.
Nothing whatsoever happened. The book simply lay there, looking old and dirty and dog-eared.
“Finished?” said Harry irritably. “Or d’you want to wait and see if it does a few backflips?”
“It seems all right,” said Hermione, still staring at the book suspiciously. “I mean, it really does seem to be . . . just a textbook.”
“Good. Then I’ll have it back,” said Harry, snatching it off the table, but it slipped from his hand and landed open on the floor.
Nobody else was looking. Harry bent low to retrieve the book, and as he did so, he saw something scribbled along the bottom of the back cover in the same small, cramped handwriting as the instructions that had won him his bottle of Felix Felicis, now safely hidden inside a pair of socks in his trunk upstairs.
This Book is the Property of the Half-Blood Prince.
CHAPTER TEN
THE HOUSE OF GAUNT
For the rest of the week’s Potions lessons Harry continued to follow the Half-Blood Prince’s instructions wherever they deviated from Libatius Borage’s, with the result that by their fourth lesson Slughorn was raving about Harry’s abilities, saying that he had rarely taught anyone so talented. Neither Ron nor Hermione was delighted by this. Although Harry had offered to share his book with both of them, Ron had more difficulty deciphering the handwriting than Harry did, and could not keep asking Harry to read aloud or it might look suspicious. Hermione, meanwhile, was resolutely plowing on with what she called the “official” instructions, but becoming increasingly bad-tempered as they yielded poorer results than the Prince’s.
Harry wondered vaguely who the Half-Blood Prince had been. Although the amount of homework they had been given prevented him from reading the whole of his copy of Advanced Potion-Making, he had skimmed through it sufficiently to see that there was barely a page on which the Prince had not made additional notes, not all of them concerned with potion-making. Here and there were directions for what looked like spells that the Prince had made up himself.
“Or herself,” said Hermione irritably, overhearing Harry pointing some of these out to Ron in the common room on Saturday evening. “It might have been a girl. I think the handwriting looks more like a girl’s than a boy’s.”
“The Half-Blood Prince, he was called,” Harry said. “How many girls have been Princes?”
Hermione seemed to have no answer to this. She merely scowled and twitched her essay on The Principles of Rematerialization away from Ron, who was trying to read it upside down.
Harry looked at his watch and hurriedly put the old copy of Advanced Potion-Making back into his bag.
“It’s five to eight, I’d better go, I’ll be late for Dumbledore.”
“Ooooh!” gasped Hermione, looking up at once. “Good luck! We’ll wait up, we want to hear what he teaches you!”
“Hope it goes okay,” said Ron, and the pair of them watched Harry leave through the portrait hole.
Harry proceeded through deserted corridors, though he had to step hastily behind a statue when Professor Trelawney appeared around a corner, muttering to herself as she shuffled a pack of dirty-looking playing cards, reading them as she walked.
“Two of spades: conflict,” she murmured, as she passed the place where Harry crouched, hidden. “Seven of spades: an ill omen. Ten of spades: violence. Knave of spades: a dark young man, possibly troubled, one who dislikes the questioner —”
She stopped dead, right on the other side of Harry’s statue.
“Well, that can’t be right,” she said, annoyed, and Harry heard her reshuffling vigorously as she set off again, leaving nothing but a whiff of cooking sherry behind her. Harry waited until he was quite sure she had gone, then hurried off again until he reached the spot in the seventh-floor corridor where a single gargoyle stood against the wall.
“Acid Pops,” said Harry, and the gargoyle leapt aside; the wall behind it slid apart, and a moving spiral stone staircase was revealed, onto which Harry stepped, so that he was carried in smooth circles up to the door with the brass knocker that led to Dumbledore’s office.
Harry knocked.
“Come in,” said Dumbledore’s voice.
“Good evening, sir,” said Harry, walking into the headmaster’s office.
“Ah, good evening, Harry. Sit down,” said Dumbledore, smiling. “I hope you’ve had an enjoyable first week back at school?”
“Yes, thanks, sir,” said Harry.
“You must have been busy, a detention under your belt already!”
“Er,” began Harry awkwardly, but Dumbledore did not look too stern.
“I have arranged with Professor Snape that you will do your detention next Saturday instead.”
“Right,” said Harry, who had more pressing matters on his mind than Snape’s detention, and now looked around surreptitiously for some indication of what Dumbledore was planning to do with him this evening. The circular office looked just as it always did; the delicate silver instruments stood on spindle-legged tables, puffing smoke and whirring; portraits of previous headmasters and headmistresses dozed in their frames, and Dumbledore’s magnificent phoenix, Fawkes, stood on his perch behind the door, watching Harry with bright interest. It did not even look as though Dumbledore had cleared a space for dueling practice.
“So, Harry,” said Dumbledore, in a businesslike voice. “You have been wondering, I am sure, what I have planned for you during these — for want of a better word — lessons?”
“Yes, sir.”
“Well, I have decided that it is time, now that you know what prompted Lord Voldemort to try and kill you fifteen years ago, for you to be given certain information.”