There was a scraping as everyone drew their cauldrons toward them and some loud clunks as people began adding weights to their scales, but nobody spoke. The concentration within the room was almost tangible. Harry saw Malfoy riffling feverishly through his copy of Advanced Potion-Making. It could not have been clearer that Malfoy really wanted that lucky day. Harry bent swiftly over the tattered book Slughorn had lent him.
To his annoyance he saw that the previous owner had scribbled all over the pages, so that the margins were as black as the printed portions. Bending low to decipher the ingredients (even here, the previous owner had made annotations and crossed things out) Harry hurried off toward the store cupboard to find what he needed. As he dashed back to his cauldron, he saw Malfoy cutting up Valerian roots as fast as he could.
Everyone kept glancing around at what the rest of the class was doing; this was both an advantage and a disadvantage of Potions, that it was hard to keep your work private. Within ten minutes, the whole place was full of bluish steam. Hermione, of course, seemed to have progressed furthest. Her potion already resembled the “smooth, blackcurrant-colored liquid” mentioned as the ideal halfway stage.
Having finished chopping his roots, Harry bent low over his book again. It was really very irritating, having to try and decipher the directions under all the stupid scribbles of the previous owner, who for some reason had taken issue with the order to cut up the sopophorous bean and had written in the alternative instruction:
Crush with flat side of silver dagger, releases juice better than cutting.
“Sir, I think you knew my grandfather, Abraxas Malfoy?” Harry looked up; Slughorn was just passing the Slytherin table.
“Yes,” said Slughorn, without looking at Malfoy, “I was sorry to hear he had died, although of course it wasn’t unexpected, dragon pox at his age…”
And he walked away. Harry bent back over his cauldron, smirking. He could tell that Malfoy had expected to be treated like Harry or Zabini; perhaps even hoped for some preferential treatment of the type he had learned to expect from Snape. It looked as though Malfoy would have to rely on nothing but talent to win the bottle of Felix Felicis.
The sopophorous bean was proving very difficult to cut up. Harry turned to Hermione.
“Can I borrow your silver knife?”
She nodded impatiently, not taking her eyes off her potion, which was still deep purple, though according to the book ought to be turning a light shade of lilac by now.
Harry crushed his bean with the flat side of the dagger. To his astonishment, it immediately exuded so much juice he was amazed the shriveled bean could have held it all.
Hastily scooping it all into the cauldron he saw, to his surprise, that the potion immediately turned exactly the shade of lilac described by the textbook.
His annoyance with the previous owner vanishing on the spot, Harry now squinted at the next line of instructions. According the book, he had to stir counterclockwise until the potion turned clear as water. According to the addition the previous owner made, however, he ought to add a clockwise stir after every seventh counterclockwise stir. Could the old owner be right twice?
Harry stirred counterclockwise, held his breath, and stirred once clockwise. The effect was immediate. The potion turned pale pink.
“How are you doing that?” demanded Hermione, who was redfaced and whose hair was growing bushier and bushier in the fumes from her cauldron; her potion was still resolutely purple.
“Add a clockwise stir—”
“No, no, the book says counterclockwise!” she snapped.
Harry shrugged and continued what he was doing. Seven stirs counterdockwise, one clockwise, pause… seven stirs counterclockwise, one stir clockwise…
Across the table, Ron was cursing fluently under his breath; his potion looked like liquid licorice. Harry glanced around. As far as he could see, no one else’s potion had turned as pale as his. He felt elated, something that had certainly never happened before in this dungeon.
“And time’s… up!” called Slughorn. “Stop stirring, please!”
Slughorn moved slowly among the tables, peering into cauldrons. He made no comment, but occasionally gave the potions a stir or a sniff. At last he reached the table where Harry, Ron, Hermione, and Ernie were sitting. He smiled ruefully at the tarlike substance in Ron’s cauldron. He passed over Ernie’s navy concoction. Hermione’s potion he gave an approving nod. Then he saw Harry’s, and a look of incredulous delight spread over his face.
“The clear winner!” he cried to the dungeon. “Excellent, excellent, Harry! Good lord, it’s clear you’ve inherited your mother’s talent. She was a dab hand at Potions, Lily was! Here you are, then, here you are—one bottle of Felix Felicis, as promised, and use it well!”
Harry slipped the tiny bottle of golden liquid into his inner pocket, feeling an odd combination of delight at the furious looks on the Slytherins’ faces and guilt at the disappointed expression on Hermione’s. Ron looked simply dumbfounded.
“How did you do that?” he whispered to Harry as they left the dungeon.
“Got lucky, I suppose,” said Harry, because Malfoy was within earshot.
Once they were securely ensconced at the Gryffindor table for dinner, however, he felt safe enough to tell them. Hermione’s face became stonier with every word he uttered.
“I s’pose you think I cheated?” he finished, aggravated by her expression.
“Well, it wasn’t exactly your own work, was it?” she said stiffly.
“He only followed different instructions to ours,” said Ron, “Could’ve been a catastrophe, couldn’t it? But he took a risk and it paid off.” He heaved a sigh. “Slughorn could’ve handed me that book, but no, I get the one no one’s ever written on. Puked on, by the look of page fifty-two, but—”
“Hang on,” said a voice close by Harry’s left ear and he caught a sudden waft of that flowery smell he had picked up in Slughorn’s dungeon. He looked around and saw that Ginny had joined them. “Did I hear right? You’ve been taking orders from something someone wrote in a book, Harry?”
She looked alarmed and angry. Harry knew what was on her mind at once.
“It’s nothing,” he said reassuringly, lowering his voice. “It’s not like, you know, Riddle’s diary. It’s just an old textbook someone’s scribbled on.”
“But you’re doing what it says?”
“I just tried a few of the tips written in the margins, honestly, Ginny, there’s nothing funny—”
“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.