By October, Harry Potter had developed a method.
That was worse than suspicion.
Suspicion by itself remained noisy. It walked into corridors too quickly. It said Voldemort in public and let anger masquerade as evidence. Hogwarts knew how to absorb that sort of thing. The castle had been surviving boys with certainty problems for centuries. It gave them rivals, detentions, Quidditch, and enough architecture to blunt the edge of obsession before it became structurally useful.
Method was different.
Method learned.
Harry stopped confronting Draco directly after the corridor incident. That alone made the room worse. He did not become calmer. He became sharper. He watched where Malfoy went and, more importantly, where timing bent around him. He asked fewer loud questions and started asking better ones. Not why is he guilty. When does he vanish. Who sees him last. Which routes produce delay. What explains absence without requiring witness.
Adrian disliked the improvement because it meant Harry was now dangerous in the same way the school was: by pattern rather than force.
Hermione noticed too, though she expressed this only by becoming more irritable whenever Harry used the phrase "I'm just checking something" in a tone that made clear no ordinary checking remained involved.
Ron noticed by hunger and proximity, which was his more useful gift. "He's gone weirdly quiet about it," he said one evening in the common room, staring into the fire as if prophecy might rise from the coals and save everyone the labor of inference. "That's never good."
"That sounds statistical," Adrian said.
Ron looked at him. "You say that like it improves things."
"It improves categories."
"No one wants improved categories," Ron muttered. "We want Malfoy to stop acting like he's in a private war with furniture."
That was fair enough to leave standing.
The object theory had not improved since the library.
Cabinet remained strongest. Cabinet linked to elsewhere remained stronger still. But the school, in its usual disobedient loyalty to complexity, had not yet yielded the actual object or the actual room. Harry's surveillance produced routes. Hermione's research produced plausible mechanics. Adrian's own observations produced tension lines and absence shapes. All of it sat one rung below proof and exactly one rung above comfort.
Meanwhile Draco continued to narrow.
He looked worse in daylight now.
Not ill. Not dramatically. Hogwarts children were too practiced by then at disguising true damage under adolescent weather. But the signs accumulated if one watched for the wrong details. A cuff mended twice, then abandoned. Ink on one wrist as if he had braced himself against rough wood or wet stone while writing fast. Once, in Defense, Snape told the class to pair off for non-verbal disarming practice and Draco's wand hand failed him for the briefest fraction before recovering. Not fear. Exhaustion crossing the line into the body despite social command.
Snape saw it.
There again.
Not publicly. Never that. But Adrian, from two pairs away, watched Snape's gaze stop at Draco's wrist and understood, with new irritation, that the adults around this year remained divided not between those who knew and those who did not, but between those who knew and had chosen silence for reasons too large to name in corridors.
Interesting.
No.
Only infuriating.
The first real shift came through Slughorn.
Not because he meant it to. Slughorn did not believe in direct revelation when social gravity might accomplish more by being allowed to form naturally. But appetite-based people always altered rooms wherever they stood, and this year had begun using him the way schools use men of his type best: as collectors of lines other people are too dignified to admit they want.
It was a Tuesday evening when the invitation came.
Not to Adrian this time. He was already, apparently, in the orbit and therefore did not require formal summoning for every movement. No, the folded note arrived for Harry by a third-year Gryffindor who looked personally offended by being made messenger for social currents older than his own moral vocabulary.
Harry opened it at the Ravenclaw table, because he had sat down there after dinner with Ron and Hermione in the loose bad habit the older Houses had begun developing whenever war, essays, and impossible people made the official table boundaries feel more decorative than binding.
He unfolded the note, read two lines, and said, "Oh, no."
Ron leaned across him at once. "What?"
"Slughorn. Supper. Tomorrow."
Hermione reached out. "Let me see."
Harry passed over the note with the flat resignation of a boy being invited somewhere he already knew would be both useful and horrible.
Hermione read it aloud under her breath.
**Dear Harry,
A few of us are gathering tomorrow evening at eight for a little supper. Nothing formal. Just some promising people and an agreeable pudding. Delighted if you'd come.
Horace Slughorn**
Ron made a face. "Promising people. That sounds illegal."
"It sounds Slughorn," Hermione said.
Anthony, who had been revising medieval magical taxation nearby and was therefore in the ideal emotional position to take interest in anything irrelevant, looked up and said, "Are we still using pudding as social camouflage?"
"Yes," Adrian said. "Britain remains committed to it."
Harry folded the note again. His expression had gone not annoyed, but thoughtful.
There.
Hermione saw it too.
"No," she said immediately.
Harry looked at her. "What?"
"You're thinking about the potion."
"I'm always thinking about the potion."
"That is not reassuring."
Ron groaned. "I knew the luck thing would turn evil."
Felix Felicis sat in a small glass vial in Harry's trunk upstairs, wrapped in an old sock because Ron had declared this "less suspicious than keeping liquid destiny in a visible drawer." The logic was poor. The instinct, not entirely wrong. Since receiving it, Harry had developed the same relationship to the little bottle most students would have developed to any powerful tool that might, under correct circumstances, turn a difficult problem into a route.
He did not want it constantly.
That would have been stupider.
He wanted a reason.
Useful. Dangerous. Adolescent.
Adrian looked at him. "For what?"
Harry blinked.
"That sounds like a challenge."
"No," Adrian said. "It's a question."
Harry leaned back in the chair and rubbed one hand briefly across the scar as though the motion had become a form of punctuation he no longer noticed unless someone else was watching closely enough to classify it.
"Slughorn likes collecting people," he said. "He talks more at those suppers. He drinks. He shows off. He might say something."
"Hear that?" Ron said. "That's manipulation wearing school robes."
Hermione, however, had gone still. Not convinced. Not dismissive.
"What something?" she asked.
Harry's mouth tightened. "About old students. Old objects. Old... things." He looked at Adrian. "If there's a cabinet. If it came from Borgin and Burkes. If Slughorn's been around long enough to know what sort of dark junk gets passed between families and schools..."
There.
Not wild. Not finished. But not wild.
Slughorn did traffic in memory. In names. In collections. In old school lives converted into present leverage. If there existed an ugly magical furnishing significant enough to pass between shop and house and castle, Slughorn was exactly the species of adult who might mention it halfway through pudding because the room had amused him correctly.
Hermione said, very carefully, "That still doesn't mean you drink Felix Felicis to get an old man to gossip."
"That is exactly what it means," Ron said. "That's the best use of it anyone's suggested so far."
"No," Hermione snapped. "It means we think first."
"That sounds statistical," Adrian murmured.
She glared at him, which improved the room's honesty by one degree.
Harry looked back at the note. "I don't have to decide now."
"That sentence," Ron said, "is how people decide now."
He was right. Everyone knew it. No one improved the line by saying so.
The next day proceeded in the usual Year Six way, which was to say badly beneath the surface and tolerably above it.
Transfiguration in the morning, where McGonagall moved the room through advanced transformation theory as if war had not entered her classroom because if she admitted it there, then she would have to admit it everywhere. Herbology in rain thick enough to make the greenhouses sweat. Defense after lunch, where Snape corrected non-verbal shielding by surgical insult and managed somehow to make all forty minutes feel like private disappointment given public body.
Draco missed the final ten minutes of History of Magic and reappeared before dinner with wet cuffs and dust along one shoulder.
Interesting.
No one else noticed. Or if they did, they called it school.
At supper, Harry ate badly.
Not for lack of appetite. For too much thinking. He sat beside Ron and opposite Hermione with the same compressed inwardness Adrian had learned now to read as impending decision rather than mere adolescent weather. Every few minutes his hand went to his pocket and then stopped, as if the little vial there had become an argument that preferred physical confirmation before reason could properly oppose it.
Hermione noticed every movement.
Ron noticed Hermione noticing and chose, for once, not to help.
By pudding, the room between the four of them had become almost silent. Not in the social sense. The Hall remained itself. Spoons, voices, plates, rain against high windows, Slytherins laughing too loudly at something Pansy Parkinson had said about a Hufflepuff scarf. But their table had narrowed around one small bottle and the category of choice.
At last Hermione said, "Not tonight."
Harry looked at her.
"That sounds like an answer to a question I didn't ask."
"No," she replied. "It sounds like prevention."
"From what?"
"From exactly the kind of reasoning that uses luck as a substitute for caution."
"It's not a substitute if it works."
Hermione closed her eyes very briefly.
"There," Ron said to Adrian under his breath. "That. That is why we die."
Adrian ignored him.
Harry's tone had not risen. That mattered more than if it had. Anger was easier to sort. This was practical pressure arguing its own moral innocence.
"I'm not going to pour the whole bottle into pumpkin juice and start robbing vaults," Harry said. "It's a few drops. For a supper. To get a better chance of hearing something useful."
Hermione leaned forward. "And if it gives you exactly the wrong chance? If it pushes you toward the wrong question? The wrong room? The wrong confidence?"
There.
That was the real fear.
Not poisoning. Not cheating.
Misdirection.
Felix Felicis was not intelligence. It was route pressure. Pattern bent favorably around the drinker for a while. In a school like Hogwarts, where favorable patterns often wore masks until after midnight, that could become indistinguishable from sabotage if one entered it badly.
Harry looked from Hermione to Adrian.
There again. Not because Adrian deserved to decide anything. Because Harry had begun using him as a structural check when rooms became too binary for friendship to hold clearly on its own.
"What do you think?"
Interesting.
Ron looked relieved someone else had been chosen for moral labor. Hermione looked offended and then, because she was honest enough not to pretend otherwise, interested.
Adrian considered the Hall.
Slughorn at the staff table, large and gleaming, laughing at something Flitwick had said and turning the laugh half toward Dumbledore because audiences remained his first instinct even with colleagues. Snape unreadable in profile. Draco at Slytherin, present tonight, speaking to no one with any visible pleasure. The year holding all its old lines together through soup and custard and institutional audacity.
Then Adrian considered the bottle.
"Felix will not make Slughorn truthful," he said.
Harry's face tightened slightly. Good.
"It may," Adrian went on, "make him more himself. That's different."
Hermione nodded once before she could stop herself.
Harry said, "That's useful."
"It is also dangerous," Adrian said. "Because Slughorn's most natural self is acquisitive."
Ron blinked. "That sounded expensive."
"It means," Hermione said, "that luck might make him more likely to reveal, but also more likely to collect you harder while doing it."
Harry sat back.
There.
Better.
Not stopped. Forced into higher-quality doubt.
"Then I ask about memory," he said after a moment. "Not cabinets. Not Borgin and Burkes. Something older. Let him get there himself if he wants to."
Hermione looked at him.
Not convinced. Not unconvinced.
Evidence-driven still. Good.
"That," she said slowly, "is less reckless than the other plan."
"That sounds like support."
"It sounds like reduced opposition."
Ron looked between them. "I hate this school."
That nearly made Harry smile.
Only nearly.
The decision, when it came, came privately. That was another improvement. He did not announce it to the Hall like intent seeking witness. He finished supper, went with them back toward Gryffindor, and only at the landing where Ravenclaw and Gryffindor routes parted did he say, very low, "I'm taking it."
Hermione inhaled sharply.
Harry went on before she could answer.
"Three drops. Not more. I'm not asking him about Malfoy directly. I'm asking what he knows about... old students. Old professors. Things tied to school."
That was not the whole plan. But it was enough to map.
Hermione looked at Adrian, then back at Harry.
At last she said, "If you start sounding pleased with yourself, I'm leaving."
"That seems unlikely."
"It's a condition."
Ron, who had apparently decided moral arbitration was exhausting and luck-adjacent supper conversation fell below his preferred administrative threshold, said, "If he comes back with anything useful, I reserve the right to be supportive after the fact."
Then they split.
Adrian went up to Ravenclaw Tower and did not revise a word of Arithmancy.
The common room held its usual wet-evening shape. Firelight. scattered complaints. A fourth-year asleep over Ancient Runes in the posture of someone betrayed by consonants. Anthony lying lengthwise on one sofa reading a biography of Eldritch Diggory as though this were not a cry for help but an intellectual choice.
"You look," Anthony said without glancing up, "as though one of Potter's plans has become more statistically elegant without becoming less terrible."
"That sounds interpretive."
"It sounds educated."
Adrian sat by the window and watched rain blur the grounds into a dark wash beyond the glass. Somewhere in the castle, Harry Potter was probably uncorking liquid luck over an old sock and pretending this qualified as method rather than prayer with better branding.
Interesting.
Not because Harry was wrong to try.
Because Felix altered relation.
Not events themselves. That was childish thinking. It altered which route became natural, which interruption proved productive, which question landed at the moment when another person's private structure was most willing to answer badly. In other words, it did to a night what Adrian tried, by observation, to do to a year.
No wonder Hermione disliked it.
No wonder Harry wanted it.
He took out his notebook.
Harry using Felix to approach Slughorn.
Risk: not false answer, but over-favorable route producing misleading confidence.
Potential use: Slughorn more likely to reveal preference patterns, memory habits, or old object knowledge.
He stopped there.
Then, after a while, added:
Luck is only useful if one remains suspicious of the room it chooses.
That line felt right enough to leave.
The night passed slowly after that.
Not because clocks changed their mind. Because waiting inside a school where half the danger came through corridors and conversation always stretched time into something more administratively punitive than minutes deserved. Adrian read two pages. Wrote none. Heard the common room empty by degrees. Heard the eagle knocker ask a fifth-year a question about thresholds and consequence that seemed rude even by the door's standards. Heard wind rise once against the tower windows and then settle again into rain.
Harry did not return to Gryffindor until nearly midnight.
That, Adrian learned the next morning from Hermione before breakfast, was the first useful sign.
She came into the Entrance Hall with her hair half-fastened and the expression of someone who had lost sleep not through panic but through trying to structure another person's stupidity into survivable meaning.
"Well?"
"He came back late," she said.
"That sounds statistical."
She glared.
"Ron says he was happy," Hermione went on. "Not normal happy. Felix happy."
Worse.
"What did Slughorn say?"
Hermione looked around the Hall automatically, then lowered her voice. "Not here."
Interesting.
Not because the answer existed. Because it had enough shape to require better walls.
She met him later in an unused classroom on the third floor where the windows rattled and the desks still bore the carved initials of children long graduated and probably no wiser in ministry work than they had been at fourteen.
Harry was already there with Ron.
And yes, Adrian thought at once, Felix remained on him in residue if not in potion. Not visible gold or absurd serenity. Only the shape of a person who had passed through a night and found it, against all practice, arranged slightly in his favor. His body held more loosely. His eyes were brighter. Even the bruising tiredness under them looked temporarily displaced by momentum.
"Well?" Adrian said.
Harry sat on the front desk and looked at all three of them.
Then he said, "It wasn't about cabinets."
Hermione's face tightened at once, not in triumph but in the offended caution of a person who had been right too early to enjoy it.
Harry held up one hand.
"It was better."
Interesting.
Ron leaned against the wall, arms folded, visibly committed to the principle that whatever had happened could now please him retroactively if it proved useful enough to justify sleep loss.
Harry went on.
"I didn't ask about objects at all. I asked Slughorn about old students. About people he was proud of. About people who became important."
Of course he did.
Slughorn's favorite subject if phrased as admiration rather than extraction.
"He talked for ages," Harry said. "Quidditch captains, Ministry people, potion-makers, old Slytherins, some Healer from St Mungo's who invented a blood-replenishing draft and apparently still sends him Christmas pineapple—"
"That sounds plausible," Adrian said.
"Yes. Then," Harry continued, "I asked if he'd taught Tom Riddle."
There.
The room stilled.
Not surprise. Pressure.
Hermione said, very quietly, "And?"
Harry looked at the floor once before answering.
"He went strange."
That alone was useful.
Because Slughorn's ordinary mode was appetite under charm. To go strange meant he had reached either shame or fear. Those two often resembled each other in older men and only improved by being cornered properly.
"He asked how I knew he'd taught him," Harry said. "I said everyone knows he's been at Hogwarts ages. He laughed, but not really. Then he said Riddle was brilliant. More brilliant than almost anyone. Polite. Charming. Interested in things most boys his age had no business being interested in."
Interesting. Dangerous. Old.
"Such as?" Hermione asked.
Harry's expression altered.
"Horcruxes."
The word lay in the room like a cut made too clean to bleed immediately.
Ron said, "What are those?"
Hermione looked as though she knew and wished, for once, that knowledge had remained theoretical.
Adrian did not answer at once. Not because he lacked category. Because the category was monstrous enough that speaking it carelessly felt like contamination.
Harry did it for them.
"Dark magic. Splitting the soul."
There.
The year had changed again.
Not because Malfoy had vanished from it. He remained. The cabinet remained. The task remained. But the room had widened suddenly beneath them and revealed another structure running under Year Six entirely, older and uglier than furniture and vows and schoolboy espionage.
Slughorn had not given them a route to Draco.
He had given them a route to Voldemort.
Hermione sat down without meaning to. The chair behind her complained at the floorboards.
"You're sure?" she asked.
Harry nodded. "He didn't explain everything. Not exactly. But he knew what they were. Knew Riddle had asked. And he didn't like it."
No.
That sounded right.
Slughorn as collector, not inventor. Appetite, not abyss. The sort of man who could orbit dangerous brilliance for years and only recoil once it asked too directly to be named.
Adrian said, "Felix made him more himself."
Harry looked at him.
"Yes," he said. "Exactly."
There.
That was the useful part. Not truth from luck. Better access to someone's preferred structure. Slughorn had not confessed under magical coercion. He had merely slid into his own old route: names, pride, memory, distinction, and the fatal vanity of believing one could tell a story without fully re-entering the room it came from.
Hermione said, "And Draco?"
Harry's face flattened.
Still there. Still the active line. Good.
"I learned nothing about Draco," he said. "Not directly."
No one smiled.
That, too, was right.
Because the school remained what it was. One answer never arrived alone. Never fixed the right room completely. Harry had used luck to widen the war and had not, yet, narrowed the cabinet.
Useful.
Also catastrophic.
Adrian looked toward the rattling window where morning rain moved across the glass in pale trembling lines.
The year had become more dangerous overnight.
Not only because Malfoy still carried his task.
Because now the hidden architecture beneath Dumbledore, Slughorn, Voldemort, and Harry Potter had acquired a darker central chamber. Something older than school. Older than rivalry. Soul work. Division. Preservation by mutilation.
And Slughorn, genial collector, sat nearer that line than anyone in Hogwarts had yet admitted aloud.
Interesting.
No.
Worse than that.
Foundational.
Harry said, "Dumbledore will want to know."
That at least was simple.
Yes. Of course he would.
But Adrian found himself thinking, not first of Dumbledore, but of Slughorn after the supper. Of a man who had let himself become more himself under luck and, by doing so, drifted nearer a memory he had likely spent decades arranging into softer shape.
Luck, Adrian thought, had not made the night kinder.
Only more exact.
He opened the notebook later and wrote:
Felix did not produce truth directly. It produced access to the right memory structure.
Slughorn altered under favorable route into confession-adjacent vanity.
Result widens Year Six: Draco remains active line, but deeper structure now tied to Riddle's early research.
Then, after a moment:
Luck is not innocence. It is acceleration.
He read the line twice and left it.
Because that was the year so far. Cabinet. vow. secret route. old professor. hidden dark theory. Hogwarts teaching all of it at once through private access and public denial.
And somewhere beneath the school, Malfoy was still repairing something.
The old answers had not disappeared because new horror had entered the room.
Year Six had only become itself more fully by refusing to let any one secret arrive alone.
*End of Chapter 85*