The room she was given was on the second floor, at the east end of the corridor, with a window that looked out over the side garden rather than the street. It was a large room made to feel smaller by the quality of the quiet in it, the thick walls and the good curtains and the particular silence that expensive houses have, silence that is maintained rather than simply present.

She put her bag on the chair and stood in the middle of the room and looked at it.

There was a desk. There was a bookshelf, empty. There was a bed with clean linen and a lamp with a warm bulb and a door that locked from the inside with a key that was in the lock when she arrived, which she noted and understood as a specific kind of communication.

She went to the window and looked out at the side garden, which was formal and dark at this hour, the shapes of hedges and paths visible in the light coming from the windows below. She stood there for a while, longer than was strictly necessary for the purpose of looking at a garden, and thought.

The bond was present. It had been present for five hours now, since the Archives, and she had been tracking it the way she tracked unfamiliar things, with careful attention and without conclusion, building data before she committed to interpretation. It was consistent. It was not painful or intrusive. It was simply there, a thread of awareness at the center of herself, running in a direction that she now associated with the east wing of Cross Estate, which was where his study was.

She could feel, very faintly, that he was there. Not what he was doing. Not what he was thinking. Only the specific quality of the suppression, the weight of something very large being kept very still. She had felt this for five hours. She was beginning to understand it as a constant rather than an event.

She turned from the window and began to unpack what she had brought. She had brought three changes of clothes, her notebook, her power's accessories, the photograph of herself and Finn at the coast, and the small box that contained the things from Finn's apartment she could not leave at her own place. She unpacked methodically. She put the photograph on the desk.

There was a knock at the door.

She opened it to find a young woman about her own age with dark hair and eyes that had the same quality of alertness as Dorian's but expressed differently, in a face that was more mobile, more willing to show what was happening inside it. She said: "I'm Ines. I wanted to introduce myself before you met me at breakfast and it was awkward."

Sera looked at her for a moment. She said: "That's practical."

Ines said: "I find awkward breakfasts harder to recover from than awkward first impressions." She looked at Sera with frank curiosity. "He didn't tell me much. He never does. But you're here, which means something happened today that he needed to deal with immediately."

"Something happened," Sera said.

Ines waited, clearly interested. Sera did not elaborate. Ines accepted this with a quality of grace that suggested she was accustomed to incomplete information from the people she lived with.

"There is food downstairs if you want it," Ines said. "And I can show you the parts of the estate you should know about, if you want that also."

Sera said: "Yes to the food."

Ines showed her downstairs and through the kitchen and the back corridor and the small library that adjoined the main sitting room, moving through the house with the ease of someone who had grown up in it, pointing out things with the specific practicality of someone who understood that useful information was a form of welcome. She showed Sera the door that led to the garden, the secondary entrance from the back lane, the room that had the better light for working in the morning.

Sera noted all of it. She was building the map she always built.

Ines did not ask questions directly. She offered observations and let them sit and occasionally Sera responded to them and occasionally she did not, and Ines received both responses with equal equanimity. By the time they reached the kitchen, Sera thought that she liked Ines in the way she liked people who did not require performance, and that this feeling was tentative and she was not ready to act on it yet, but it was there.

Dorian came into the kitchen while Sera was eating. He looked at Ines and then at Sera and then he went to the kettle without saying anything, which Ines did not appear to find remarkable. He made two cups of tea and set one in front of Sera without asking and took the other to the counter and stood with it.

Ines looked between them with the quality of someone filing information for later analysis.

Sera said to Dorian: "The research you showed me yesterday. The case files from the adjacent collection. I want to go through them again tonight."

He said: "The study is available."

Ines said: "You work fast."

Sera looked at her. Ines looked back with the slightly mischievous quality she had been showing since the knock at the door. Sera said: "I've been behind for eleven days."

Ines said: "He's been behind for two years." She looked at Dorian with the specific affection of siblings who have been through things together. He did not respond in any visible way, which was also its own kind of response.

Sera took the tea. It was the right temperature, which meant he had made it first and brought it over when it was ready to drink, which meant he had been watching for the moment without drawing attention to it. She filed this.

He said: "There's something else we need to discuss."

She looked at him.

"The bond has a separation threshold. Based on the documentation I've reviewed before and what we found today, I believe the threshold is six hours. Beyond that, there will be symptoms. Disorientation initially, then more serious effects if the separation continues."

She had expected this. She had been thinking about it since the Archives. She said: "How confident are you in the six-hour number?"

"Moderately. It's based on historical precedent, not direct observation."

"We should test it," she said.

He looked at her.

"Not to the point of serious effects," she said. "But we should know what the real threshold is, not what the historical precedent suggests." She thought about the way her power had pushed back against the extraction attempt, the way it operated according to its own rules rather than the rules that had been assumed for it. "Historical precedent may not apply to me specifically."

He considered this. "That's reasonable."

Ines had gone very quiet in the way that people go quiet when they are listening to something they were not originally part of. Sera glanced at her. Ines looked back without apology, which Sera found she respected.

She said to Ines: "You know about the bond."

It was not a question. Ines said: "I know what a soul-bond is. I didn't know he was in one until about five minutes ago."

Dorian said, without inflection: "Ines."

Ines said: "I'm being relevant." To Sera: "Is it something he did to you, or something that happened to both of you?"

"Something that happened to both of us," Sera said.

Ines looked at her brother. He looked back at her with the same expression he used for everything, the controlled flatness, and she looked at it for a moment and then said to Sera: "All right. Good." And then she left the kitchen, in the direct way she had of moving when she had gotten what she needed.

Sera looked at Dorian. He was looking at the door Ines had gone through. Something was moving in his expression, very briefly, something she thought might be the specific tenderness that people have for the people who know them best and insist on continuing to know them.

She said: "She's important to you."

He said: "Yes."

She turned the ring on her finger. She said: "The separation threshold. We should figure out the practical arrangement. The six-hour limit, or whatever the actual limit turns out to be, means I can't be at my own apartment most of the time. Which changes things."

"Yes."

"I don't like this," she said. She said it plainly, without apology. "Not the estate, not you specifically. The loss of control over my own movements."

He said: "I know."

"Are you going to tell me it's necessary?"

"It is necessary," he said. "That doesn't mean you have to like it."

She looked at him. He was not apologizing. He was not minimizing. He was simply stating a fact and leaving her the space to have whatever response she was going to have to it without requiring her to have a different one.

She said: "I will come and go as I need to. The bond is a logistical constraint. It is not a decision about how I operate."

"I understand."

"And if the threshold turns out to be longer than six hours, we renegotiate the practical arrangement accordingly."

"Yes."

She nodded. She finished the tea. She said: "The study. Show me where you keep the adjacent collection."

He showed her. He led her through the main corridor and up the back stairs to the study on the third floor, which smelled of old paper and something slightly electrical that she associated, she understood now, with the containment ritual he performed in this room. He showed her where the adjacent collection was filed and how it was organized and which cases she had access to without restriction and which ones she should not open without checking with him first, because some of them had unstable seals of their own.

She sat at the table. She opened the first case.

He sat at the desk. He opened something of his own.

They worked in silence for two hours. It was the same kind of silence as on the canal path, the silence of two people who were both doing something and were not required to fill the space between them. She was aware of him at the desk, not intrusively, not in a way that disrupted her attention, but with the low peripheral hum of the bond, which was simply indicating that he was there and that whatever he was suppressing was still being suppressed.

At some point Ines appeared in the doorway with two more cups of tea, set them on the edge of the table and the edge of the desk without breaking the silence, and left.

Sera looked up. She looked at the tea, and then at the doorway Ines had gone through, and then at Dorian, who had not looked up from his work.

She said: "Your sister brings you tea when you work late."

He said: "Yes."

She said: "How long has she been doing that?"

"Since she was twelve."

She thought about this. She thought about a twelve-year-old Ines navigating a house she was beginning to understand was not entirely simple, finding the specific care she could offer and offering it consistently. She thought about what that said about the house, and about the person who had grown up in it alongside Dorian, and about the person Dorian was when someone took care of him, which was evidently the person who accepted tea without looking up.

She went back to the case files.

She worked until midnight. She found three things that were potentially relevant to the curse documentation they had accessed in the Archives, made notes, cross-referenced them with what she had already written down, and added them to the working file she was building.

When she stopped she was tired in the specific way she got when she had used her power extensively, the weight behind the eyes, the slight ringing in her ears that meant she had been at the edges of what she could do without cost. She closed the case file. She stood and stretched.

Dorian was still at his desk. He had been there, she thought, for most of the evening.

She said: "Goodnight."

He looked up. He said: "Goodnight."

She went to the door and stopped and said, without fully planning to: "The bond. Can you feel it now?"

He said: "Yes."

"What does it feel like from your side?"

He was quiet for a moment. She waited, not impatiently. He said: "Pressure. Something that is present but not speaking."

She thought about what she felt from his side, the sustained weight of something very large being kept very still. "Yes," she said. "That's accurate."

She went out into the corridor and down to the room with the window that looked over the side garden, and she lay on the bed that was not her bed in the house that was not her house and looked at the ceiling and listened to the quiet of Cross Estate around her.

The bond was there. It was simply there, a new fact about the world, as present and as impersonal as weather.

She thought about Finn. She thought about the clock and the notebook and the path she was on. She thought about what the Archives still contained and what she still needed to find and what it was going to cost to find it.

She thought, briefly and without intending to, about the quality of the suppression she could feel from her side of the bond, the enormous weight of it, and what it would mean for a person to carry something that heavy for that long, and what it would take to put it down.

She stopped thinking about that. She closed her eyes. She was in a strange bed in a strange house with a bond she had not chosen and a situation she had walked into because she had not been able to walk in any other direction.

She was exactly where she needed to be. She was not yet sure what that meant, or what it was going to become.

She slept.

Outside, Vespera went on in the dark, its fog and its amber lights and its layered histories of things done and hidden and slowly coming to light, and somewhere in the east wing of Cross Estate a light was still on, and someone was still working, and the bond between them sat quietly in the dark, new and strange and entirely, irrevocably present.

She had expected Cross Estate to feel like someone else's space in a way that was uncomfortable. It felt like someone else's space in a way that was simply factual, not hostile, not unwelcoming, just not hers, which she had known it would be and which she could manage.

She unpacked the small box that contained Finn's things. The photograph. The watch, which she did not touch with bare hands. The notebook, which she had already read and would read again. A small carved wooden figure he had made when he was nine, bad at carving and very pleased with it, which she had kept on her desk since he gave it to her. She arranged these things on the surface of the unfamiliar desk and looked at them until they looked like the beginning of something familiar.

Ines had been unexpected. Sera had prepared for various versions of Dorian Cross's household, and Ines was not one of them, or not this version of Ines, this specific quality of frank and practical warmth that required nothing in return and offered information as a form of welcome. She was reassessing her model of what Cross Estate was like as a place to live in based on the thirty minutes she had spent with Ines, and the reassessment was moving in a more manageable direction.

She sat at the desk and looked at the photograph for a while. She thought about Finn's face in it, the specific quality of his laugh, which she had not heard in eleven days and would not hear again, and she allowed herself the weight of this, the full weight, for the amount of time it took her to sit with it without looking away.

Then she picked up her notebook and opened it to where she had left off and began making notes about what she had read in the Archives today, while the experience was still fresh, before sleep blurred the edges of it.

She wrote for an hour. When she stopped she looked at what she had written and thought it was good, it was accurate, it was useful, and she was grateful for the capacity to transform the raw material of a difficult day into something organized and actionable. This was something she had always been able to do. She was grateful for it now in a more specific way than usual.

She stood and stretched and thought about sleeping. She was tired in the bone-deep way she got after sustained use of her power, and the bond had a quality at this hour, later in the evening, of being slightly more present than it had been in the afternoon, as if the quiet of the house amplified it. She could feel, from her side of it, that he was still awake, that the something he was suppressing was still being suppressed.

She had been thinking about this, off and on, since the Archives. She had been thinking about what it meant to be able to feel the weight of another person's containment, not its content but its presence, the specific effort of holding something that large that steadily. She had known people who held things. She had held things herself. She had not, before today, been able to feel it in someone else from the inside.

She was going to need to figure out what to do with that information.

She lay on the bed. The ceiling of this room was high, old plaster, with a small ornamental detail at the center that she traced with her eyes in the dark. The city outside was quieter than her own street at this hour. The bond was simply there.

She thought: I am in a house I did not choose, in an arrangement I made from necessity, connected to a person I do not yet fully know, working toward something that will tell me the most difficult truths available.

She thought: Finn would have found this either very funny or exactly right.

She thought it was probably both.

She closed her eyes, and the house was quiet around her, and somewhere in the east wing a light was still on, and she slept.