For or 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 Harrys 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 Snapes 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.” There was a pause.

“You said, at the end of last term, you were going to tell me everything,” said Harry. It was hard to keep a note of accusation from his voice. “Sir,” he added.

“And so I did,” said Dumbledore placidly. “I told you everything I know. From this point forth, we shall be leaving the firm foundation of fact and journeying together through the murky marshes of memory into thickets of wildest guesswork. From here on in, Harry, I may be as woefully wrong as Humphrey Belcher, who believed the time was ripe for a cheese cauldron.”

“But you think you’re right?” said Harry.

“Naturally I do, but as I have already proven to you, I make mistakes like the next man. In fact, being — forgive me — rather cleverer than most men, my mistakes tend to be correspondingly huger.”

“Sir,” said Harry tentatively, “does what you’re going to tell me have anything to do with the prophecy? Will it help me… survive?”

“It has a very great deal to do with the prophecy,” said Dumbledore, as casually as if Harry had asked him about the next days weather, “and I certainly hope that it will help you to survive.”

Dumbledore got to his feet and walked around the desk, past Harry, who turned eagerly in his seat to watch Dumbledore bending over the cabinet beside the door. When Dumbledore straightened up, he was holding a familiar shallow stone basin etched with odd markings around its rim. He placed the Pensieve on the desk in front of Harry.

“You look worried.”

Harry had indeed been eyeing the Pensieve with some apprehension. His previous experiences with the odd device that stored and revealed thoughts and memories, though highly instructive, had also been uncomfortable. The last time he had disturbed its contents, he had seen much more than he would have wished. But Dumbledore was smiling.

“This time, you enter the Pensieve with me… and, even more unusually, with permission.”

“Where are we going, sir?”

“For a trip down Bob Ogden’s memory lane,” said Dumbledore, pulling from his pocket a crystal bottle containing a swirling silvery-white substance.

“Who was Bob Ogden?”

“He was employed by the Department of Magical Law Enforcement,” said Dumbledore. “He died some time ago, but not before I had tracked him down and persuaded him to confide these recollections to me. We are about to accompany him on a visit he made in the course of his duties. If you will stand, Harry…”

But Dumbledore was having difficulty pulling out the stopper of the crystal bottle: His injured hand seemed stiff and painful.

“Shall —shall I, sir?”

“No matter, Harry —”

Dumbledore pointed his wand at the bottle and the cork flew out.

“Sir — how did you injure your hand?” Harry asked again, looking at the blackened fingers with a mixture of revulsion and pity.

“Now is not the moment for that story, Harry. Not yet. We have an appointment with Bob Ogden.”

Dumbledore tipped the silvery contents of the bottle into the Pensieve, where they swirled and shimmered, neither liquid nor gas. “After you,” said Dumbledore, gesturing toward the bowl. Harry bent forward, took a deep breath, and plunged his face into the silvery substance. He felt his feet leave the office floor; he was falling, falling through whirling darkness and then, quite suddenly, he was blinking in dazzling sunlight. Before his eyes had adjusted, Dumbledore landed beside him.

They were standing in a country lane bordered by high, tangled hedgerows, beneath a summer sky as bright and blue as a forget-me-not. Some ten feet in front of them stood a short, plump man wearing enormously thick glasses that reduced his eyes to molelike specks. He was reading a wooden signpost that was sticking out of the brambles on the left-hand side of the road. Harry knew this must be Ogden; he was the only person in sight, and he was also wearing the strange assortment of clothes so often chosen by inexperienced wizards trying to look like Muggles: in this case, a frock coat and spats over a striped one-piece bathing costume. Before Harry had time to do more than register his bizarre appearance, however, Ogden had set off at a brisk walk down the lane.

Dumbledore and Harry followed. As they passed the wooden sign, Harry looked up at its two arms. The one pointing back the way they had come read: Great Hangleton, 5 miles. The arm pointing after Ogden said Little Hangleton, I mile.

They walked a short way with nothing to see but the hedgerows, the wide blue sky overhead and the swishing, frock-coated figure ahead. Then the lane curved to the left and fell away, sloping steeply down a hillside, so that they had a sudden, unexpected view of a whole valley laid out in front of them. Harry could see a village, undoubtedly Little Hangleton, nestled between two steep hills, its church and graveyard clearly visible. Across the valley, set on the opposite hillside, was a handsome manor house surrounded by a wide expanse of velvety green lawn.

Ogden had broken into a reluctant trot due to the steep downward slope. Dumbledore lengthened his stride, and Harry hurried to keep up. He thought Little Hangleton must be their final destination and wondered, as he had done on the night they had found Slughorn, why they had to approach it from such a distance. He soon discovered that he was mistaken in thinking that they were going to the village, however. The lane curved to the right and when they rounded the corner, it was to see the very edge of Ogden’s frock coat vanishing through a gap in the hedge.

Dumbledore and Harry followed him onto a narrow dirt track bordered by higher and wilder hedgerows than those they had left behind. The path was crooked, rocky, and potholed, sloping downhill like the last one, and it seemed to be heading for a patch of dark trees a little below them. Sure enough, the track soon opened up at the copse, and Dumbledore and Harry came to a halt behind Ogden, who had stopped and drawn his wand.