Hermione Granger did not begin with suspicion in the way Harry had.
Harry's discomfort came from instinct, from the accumulated sensation that something about Tom Riddle did not fit with the shape of ordinary goodness. Harry had a strong moral reflex, and Tom offended it simply by existing in a way that felt too measured, too detached, too exact. Hermione was different. Instinct, to her, was only the beginning of a problem, never the solution. If something felt wrong, that feeling was not enough. It had to be tested, observed, named. Until it could be explained, it remained unfinished.
That was why she was dangerous.
Tom understood this long before she spoke to him again. He noticed it first in the library, where she no longer merely watched him when he happened to be in view. She positioned herself. Not obviously, not clumsily, but with intent. Her table choices changed. Her use of time changed. She began appearing in places where observation could be disguised as routine. It was subtle enough that most people would never have seen the pattern. Tom did. Hermione's attention had developed structure.
She was no longer reacting to effects.
She was tracing causes.
The difficulty, from her perspective, was that Tom's effects did not behave the way they should have. Most patterns in school, once identified, revealed simple mechanisms beneath them. A student was good at a subject because they studied harder, because they had prior exposure, because they were naturally gifted, because they were trying to impress a professor, because they liked praise. A social pattern formed because one group was louder, one person was more charismatic, someone insulted someone else openly, a rumor spread, a conflict escalated. Ordinary causes produced visible outcomes.
Tom did not operate that way.
The outcomes around him were visible enough if one paid attention, but the mechanism never presented itself cleanly. Students who spoke to him often improved afterward. That was the first pattern Hermione isolated. But the improvement was inconsistent in form. Some became calmer. Some sharper. Some more aware of how they were perceived. Some merely became more deliberate for a day or two before drifting back toward their usual habits. It was not simple encouragement; encouragement had a recognizable emotional shape. Tom's influence had none. It looked less like support and more like calibration.
That word came to Hermione while she sat in Transfiguration, pretending to revise notes while reconstructing the previous week in her head. Calibration. Not help, not friendship, not teaching in the normal sense. He adjusted people. That was the nearest she could come to the truth without overreaching.
She began keeping small, private track of it.
Not in writing at first. Writing made things feel more dramatic than they were and risked discovery. Instead she organized it mentally, grouping students by behavior. Those who had spoken with Tom briefly before practical classes and then performed better than expected. Those who became more self-conscious afterward. Those who seemed to seek him out again without being able to explain why. Those who improved only when his attention was available, then faltered when it was not. The pattern was not perfect, which made it more convincing rather than less. Human behavior was never perfect. The precision of the influence lay in its irregularity. Tom was selecting, not distributing.
That realization sat with her for hours before she fully accepted it.
He was choosing people.
Not at random.
Not for kindness.
For response.
By the time she approached him in the library again, she had discarded any intention of sounding casual. Casualness had become useless. Tom treated it either as an inconvenience or a game, and Hermione had no interest in offering him either.
He was seated where he often sat now: not isolated, but not among the busiest tables either, positioned close enough to movement to hear it and far enough from interruption to avoid it. A book lay open before him, one of the more advanced texts from the shelves he had begun frequenting with increasing regularity. He looked up the moment she arrived, which irritated her immediately. It suggested he had noticed her approach long before she reached him.
"You're creating patterns," she said.
Tom looked at her for a moment without answering. The pause was not confusion. It was assessment. Hermione had learned enough by now to know the difference.
"Everyone does," he said at last.
"No," she replied. "Intentionally."
That changed something in his expression, though only very slightly. Not surprise. More like acknowledgment. She had chosen the correct word.
"That is better," he said quietly. "More precise."
Hermione remained standing. She had considered sitting and decided against it. Sitting too early implied negotiation. She did not want the interaction to feel settled. "Students in different houses are becoming more aware of one another in odd ways. They're comparing themselves more. They're reacting more strongly to small things. And it keeps happening after you've spoken to them."
Tom closed the book, placing one hand lightly over the cover. "That sounds like a conclusion searching for evidence."
"It sounds like evidence searching for structure."
"Structure is very fashionable with you."
Hermione ignored the attempt to redirect her. "You don't speak often unless it matters. You don't correct people unless the result will hold. You choose the ones who'll change from it."
Tom's gaze rested on her face with a levelness that would have unsettled someone less determined. Hermione felt the effect of it and refused to respond to it. "Suppose I do," he said. "What would that mean to you?"
"That depends on why."
There it was again, that question children and adults alike seemed unable to resist. Why. As though motive, once named, could be made small enough to manage. Hermione did not ask it carelessly, however. She asked because she understood that intent changed the moral shape of action. The same behavior, performed for different ends, did not remain the same.
Tom seemed to understand that too.
"And if I told you?" he asked.
"I'd know whether to be worried."
A faint shift touched his mouth then, not a smile exactly, but the beginning of one. "You're already worried."
Hermione did not deny it, which seemed to interest him more than if she had.
"What do you want?" she asked.
The question lingered between them longer than she expected. He did not answer quickly, and for the first time since she had begun speaking with him, Hermione had the odd impression that he was not refusing to answer so much as selecting among answers of unequal usefulness.
"Competence," he said.
She frowned at once. "That isn't all."
"No," Tom agreed.
He offered nothing else.
That was what infuriated her most about talking to him. He did not evade in the ordinary way. He did not lie badly, deflect, or hide behind vagueness. He gave pieces of truth so cleanly that they blocked the path to larger truth. Competence. Of course he valued competence. Anyone could see that. But the word had been chosen precisely because it was both true and insufficient.
Hermione changed direction.
"You like making things happen without anyone seeing you do it."
Tom's expression remained composed. "That sounds theatrical."
"It is theatrical."
"No," he said softly. "Theatrical things are meant to be seen."
That was the moment the conversation turned cold.
Not because he had threatened her, or even because he had admitted something directly troubling. The sentence itself was calm, almost academic. But Hermione felt with sudden clarity that she was no longer dealing with an unusual student who happened to be manipulative in the ordinary schoolchild sense. She was dealing with someone who had chosen invisibility as a method. The distinction mattered enormously.
She sat down then, though not because she was relaxing. She sat because remaining standing would have made her seem either dramatic or uncertain, and she was neither.
"You're doing it on purpose," she said.
"Yes."
The answer came too easily. She had not expected the admission, and because she had not expected it, she was unprepared for what it did to the conversation. An accusation defended against can be tested. An accusation accepted changes shape entirely.
"For what purpose?"
"To see what holds."
Hermione stared at him. "What does that mean?"
Tom looked past her briefly, toward the shelves, the students moving between them, the circulation of quiet human motion the library turned into something almost mechanical. "Most people are less stable than they imagine," he said. "A small amount of attention changes them. A smaller amount of pressure changes them more. I'm interested in where those limits are."
There was no anger in him. No excitement. No pleasure obvious enough to condemn. That was what made the answer land with such force. He sounded clinical. Experimental.
Hermione's voice lowered without her meaning it to. "You're talking about people."
"Yes."
"They aren't a theory."
"Everything becomes theory when observed carefully enough."
She almost argued immediately, then stopped because she realized with a chill that argument would not help. Tom was not saying these things to provoke her. He believed them. Not dramatically, not with grand declarations, but in the settled way one believes the sky is above and stone is hard.
"What do you want from them?" she asked again, more quietly.
This time he did smile, though only faintly. "You keep assuming the answer has to be singular."
Hermione hated how effective he was at destabilizing the terms of a conversation. Every time she felt close to something solid, he shifted the frame by half an inch, enough to make certainty slide.
She rose after that, because staying longer would have given him another opportunity to do exactly that. He did not stop her. He did not call her back. He merely reopened the book and returned his attention to it with unnerving calm, as though the conversation had ended precisely where he expected it to.
Hermione walked out of the library with her pulse elevated and her thoughts moving too quickly to order immediately. She was not frightened in the ordinary sense. Fear required a defined threat, and what she had was not definition but scale. Harry had been right, though not in the way he understood. Tom was not simply wrong-feeling. He was systematic.
That evening, when she found Harry in the Gryffindor common room, she sat down opposite him without preamble.
"He isn't just odd," she said. "He's deliberate."
Harry looked up at once, a strange mixture of relief and dread crossing his face. "That's what I've been saying."
"No," Hermione replied. "You've been saying he feels wrong. That isn't the same thing."
Harry accepted the correction more easily than he might have a week earlier. Tom had done that too, in a way—made Harry more exact through resistance. "What do you mean, deliberate?"
Hermione leaned back slightly, trying to arrange the conversation in a useful order. "He doesn't help everyone. He selects people. And he doesn't just help them perform better. He changes how they see themselves. Or how they think others see them. It isn't encouragement. It's… adjustment."
Harry was quiet for a moment. "That's what he said to me, in a way."
Hermione looked at him. "What exactly did he say?"
Harry repeated as much of their earlier conversation as he could remember. Hermione listened without interrupting, though several times something in her expression sharpened. When he finished, she sat very still.
"He's thinking in systems," she said.
Ron, sprawled nearby in a chair and only half-invested until his name or food became relevant, frowned. "You two talk about him like he's planning a war."
Hermione didn't answer immediately.
Because the truth was, she did not know the scale.
Only the direction.
Across the castle, Tom sat in the Slytherin common room while two older students argued quietly over a ranking list one of them had made for amusement. He did not join the argument. He had only spoken to one of them the previous evening, asking an apparently idle question about why professors seemed to reward visible confidence more than quiet consistency. That was all.
Now the argument was unfolding on its own. One student insisted bravery always received more theatrical recognition. The other countered that intelligence mattered more in the long term. Neither of them cited Tom. Neither would have identified him as the source even if asked directly.
That was ideal.
He listened for a moment, then lowered his gaze back to the essay in front of him. Around him, the room moved in patterns increasingly shaped by ideas that no longer needed his immediate maintenance. This was better than direct influence. Direct influence required energy. Secondary influence generated itself.
In the dormitory later, Nott spoke from the darkness after the others had gone quiet.
"Granger's watching you more."
Tom did not open his eyes. "Yes."
"Does that matter?"
Tom considered the question. "Eventually."
Nott was silent for a while. Then: "Shouldn't that be a problem?"
Tom opened his eyes to the dark ceiling above him. "Only if she learns too quickly."
That answer was more honest than most he gave. Hermione was the first person at Hogwarts who had come close to understanding the shape of what he was doing without becoming distracted by whether it appeared kind or cruel on the surface. She was asking better questions than Harry had, and better questions were always more dangerous than strong feelings.
But danger, Tom had learned long ago, was not a reason to withdraw.
It was a reason to refine.
He closed his eyes again and let the day settle into sequence. Hermione had crossed an important threshold. She no longer thought he was merely unusual. She thought he was deliberate, selective, and experimental. All of that was true.
But she still did not understand something central.
She believed, as most good people did, that exposure was the natural enemy of hidden influence. That once seen, it would weaken. That understanding created resistance.
Sometimes it did.
Sometimes it merely created a better audience.