The footprints were gone by morning.

Elianor noticed this on her way to the archive, when she passed the end of White Lantern Street and looked, without meaning to, at the spot where the figure had been standing the night before. The overnight snowfall had done its work. The cobblestones were smooth and unmarked, a clean surface that held no record of anyone having stood there. She looked at it for a moment — the absence of evidence that she had not imagined him — and then she walked on.

She made coffee in the break room before any of her colleagues arrived and was at her workstation by seven-fifteen. She worked through the morning on the routine queue, saving the flagged file for last, as if she needed to deserve it. At ten forty-five, her phone rang.

She knew before she answered. She did not know how she knew. Perhaps it was simply the hour — her mother never called in the morning unless something had shifted.

"Eli." Her mother's voice, quiet and careful the way it got when she was navigating something difficult. "I heard the news last night. About Einar Rook."

Elianor's hand tightened slightly on the phone. "How did you hear?"

"Inga Solberg called. Her nephew works at the transit authority. He told her that Veyrline sent someone to Aurevik to oversee the Frostline decommissioning, and she recognized the name." A pause. "It's been seven years."

"I know how long it's been."

"I know you know." Another pause, this one gentler. "Are you all right?"

Elianor looked at her screen. At the priority flag blinking in the queue. "I'm working," she said, which was not an answer and both of them understood that.

Her mother did not push. She had learned, in the years since Niven, not to push Elianor toward things she was not ready for. She had learned other things too — how to wait, how to hold space, how to love a daughter who had turned her grief into a second occupation and refused to put it down.

"He'll be here for a while, from what Inga said," Maera continued. "Something about needing to complete a formal assessment before the route can be officially closed."

"I know," Elianor said. "I read the transit authority notice last week."

"Of course you did." Something in her mother's voice — not quite sad, not quite fond. Both at once, the way things often were with her mother. "Eli. Whatever this man is, whatever he did or didn't do — please don't let him take up so much space that you can't breathe."

"He doesn't take up any space," Elianor said. "He's just a name in a file."

There was a brief silence.

"All right," her mother said. "Call me this week."

"I will."

She put the phone down. She sat for a moment looking at her hands on the keyboard. Then she opened the flagged file.

---

She spent the rest of the morning running enhanced filtration passes on the forty-one second fragment, using the newly refined parameters she had developed over the past two years for exactly this type of aurora-degraded audio. The results were incremental but real. She was isolating more of the voice with each pass — the phonemic structure becoming clearer, the background interference peeling back in layers.

By noon she had confirmed what she already knew: the voice was Niven's. The frequency signature matched perfectly against the clean recordings she had from before the accident — videos from family occasions, a school performance her mother had captured on a phone, the brief audio diary entries he had made on his small recorder. She had cataloged all of these years ago and kept them in a separate protected archive. Reference material. Evidence. Whatever name made it easier to keep them in a professional context rather than the personal one that would break her open if she let it.

What she was less certain about was the full content of the fragment.

She had the single word — his name, spoken with familiarity — but there was more in the recording. She could see it in the waveform, the shape of additional speech patterns after the name was spoken. She had not yet been able to reconstruct it clearly enough to be confident of the content. The aurora interference was worst in the latter part of the fragment, a dense band of magnetic noise that her current filtration approach was not cutting through effectively.

She needed different data. Specifically, she needed the full magnetic field profile from the Aurora Veil event of that night — not the sparse secondary records that had been logged by neighboring stations, but the primary data from the closest monitoring point. From the Rook Weather Tower, which had been operated by a researcher who had left Aurevik seven years ago and had now, apparently, returned.

She sat with this conclusion for a long time.

She had a professional email address. She had a reason to contact him that was entirely legitimate, that had nothing to do with the weight of seven years and the terrible familiarity of hearing her brother speak his name. She could write a brief, formal request. She had written dozens of such requests to researchers and data holders over the years. She was good at the formal request. She could keep the professional distance.

She opened a new email draft.

She closed it without writing anything.

She did this twice more before she gave up and went to get lunch.

---

The afternoon passed in the way that afternoons in the archive passed — quietly, incrementally, the work moving forward in small careful steps. She processed three other restoration files. She wrote up a report on a passive capture from the harbor monitoring station. She attended a fifteen-minute staff meeting about updated equipment maintenance protocols and said nothing during it that was not necessary.

At three-forty-five, she went to the archive's physical records room and pulled the Frostline 19 incident file. The original paper documents, not the digital copies she had worked from hundreds of times. She had done this occasionally over the years — come back to the physical originals, as if the paper itself might tell her something the scans had not.

She read through the survivor report.

Einar Rook, twenty-one years old at the time of the incident. Postgraduate student. Found on the eastern bank of Lysmere Lake by the first rescue team, approximately forty minutes after the initial emergency call. Hypothermic but conscious. Lacerations to the left hand and forearm, consistent with contact with broken metal or glass. No other significant injuries.

He had said, in the immediate post-rescue interview, that he had been in the last carriage when the train left the tracks. He did not remember clearly how he had gotten out of the carriage. He believed he had exited through the rear emergency door, but the sequence of events was fragmented due to shock and cold exposure. He had walked along the lake edge until he had encountered the rescue team.

The report noted that no other survivors had been located from the last carriage. Niven Vale, fifteen, was listed among the missing, last confirmed location the last carriage.

She had read these words many times. She knew them the way she knew the waveform on her screen, the way she knew the creak of her apartment stairs. They had long since passed through the stage of being capable of surprise and into the stage of simply being part of the furniture of her inner life — always present, always heavy, no longer sharp enough to cut but heavy enough to slow everything down.

What was new was the question that had not been there before: how had Niven known his name?

She put the file back. She put her coat on. She walked home through the early winter dark, past the harbor where the fishing boats were tied up under their snow covers, past the small square with the war memorial that was dusted white, past the tram stop where a few people huddled under the shelter waiting for the evening service.

She stopped at the bakery on the corner of her street and bought a loaf of the dark rye bread her mother liked, because she had decided, walking, that she would go to her mother's house for dinner. She wanted to sit in that small warm kitchen with the radio playing and her mother's quiet presence and the ordinary domestic sounds of an evening, and she wanted to not think about audio files or incident reports or the name that her brother had spoken into the air of a sinking train carriage seven years ago.

She wanted, for a few hours, to simply be a daughter having dinner with her mother in the city where they both lived.

She bought the bread. She walked the remaining three blocks to her apartment to drop off her bag and her work coat, and she paused, as she always did, to check the lantern in the window. The flame was steady.

She looked at it for a moment.

Then she looked down at the street below.

The evening was still early enough that there were people moving about — a few, not many, the serious cold keeping most indoors. A couple walking a dog. Two teenagers on the opposite side of the street, laughing about something. A man in a dark coat, stopped at the corner.

He was not looking at her window. He was looking at his phone, the small bright rectangle of the screen visible from above. He was probably checking directions, or a message, or the weather. He was probably anyone. He was tall, with dark hair, and he wore a grey scarf, and he was probably no one she knew.

He looked up, briefly, before he turned the corner.

She could not see his face clearly enough to be certain. The streetlamp was at the wrong angle. He was gone around the corner before she could do more than register the impression of a profile — sharp, unfamiliar, the kind of face that looked like it had spent a lot of time in cold weather.

She stood at her window for a moment longer than she needed to.

Then she got her bag, locked her apartment, and went to her mother's house.

---

Maera Vale's house was fifteen minutes away on foot, up the shallow hill that rose behind the harbor district, into the quieter residential streets where the houses were older and the gardens smaller and the lanterns, when they appeared in windows, had been there long enough to seem like architectural features.

Her mother opened the door before she knocked. She always did. The house smelled of the lamb stew that had been going all day, and something her mother called spruce tea, which was exactly what it sounded like and which Elianor had been persuaded into drinking since childhood.

They ate at the small table by the kitchen window. Her mother had made the stew with root vegetables and dark bread, the way they had always eaten in winter, and they talked about ordinary things — the new exhibit at the city museum, the repair work on the harbor road that had been going on for six weeks, the neighbor's cat that had developed an improbable friendship with a herring gull.

It was only when the dishes were done and they were sitting with their tea that her mother said, "I saw him today."

Elianor set down her cup.

"On Brygge Street," her mother said. "I was coming out of the pharmacy. He was going in the other direction. I recognized him immediately." She paused. "He looks older. Of course he does. But the way he carries himself — I remembered it from the photos in the papers."

"Did you speak to him?"

A brief silence. "I did."

Elianor looked at her mother. Maera was looking at the table, turning her cup in her hands, the gesture she made when she was choosing words carefully.

"It was only a few sentences," she said. "He stopped when he saw me. He looked — like he was waiting for something. For me to say something terrible, I think. He had the look of a man who was accustomed to receiving the worst a conversation had to offer." She was quiet for a moment. "I asked him if Niven had been cold."

The kitchen was very still.

"He didn't answer," Elianor said. Not a question.

"He couldn't answer. He stood there and his eyes went — " Her mother made a small gesture. "And then he looked down and I couldn't stay. I had to walk away. I couldn't look at him anymore." She lifted her cup. "He's carrying something very heavy, Eli. I don't know what it is. But it's not the weight of someone who doesn't care."

Elianor thought about the waveform on her screen. The forty-one second fragment. The voice that was her brother's saying a name that implied a connection she had not known existed.

"He might have information I need," she said. "For the restoration work."

"I know."

"It would be professional. Researcher to researcher."

"I know that too."

"I haven't decided."

Her mother looked at her with the particular expression that meant she was not going to say what she could have said, which was one of the things Elianor loved most about her.

"Whatever you decide," Maera said, "is the right decision. You're the only one who knows what you're ready for."

Elianor picked up her tea. Outside the kitchen window, the houses up the hill had their lights on, warm squares against the dark, and in a few of them she could see the pale glow of white lanterns.

The city, as it always did, kept its winter watch.

She stayed another hour. She walked home along the lit streets, through the light snow that had started again while she was inside. At the end of White Lantern Street she did not look at the spot where a figure had stood the night before. She kept her gaze ahead and walked at an even pace, and she went up to her apartment and checked the lantern and went to bed.

She lay in the dark and thought about a question her mother had not quite asked: what would Niven have wanted?

She did not have an answer. That was the problem with people who were gone. They could not tell you. You had to decide for yourself what to do with the shape of them they had left behind, and there was no way to know if you were carrying it right.

She closed her eyes. Outside, the snow was still falling, and the lantern was burning in the window, and somewhere in the city Einar Rook was sleeping in a hotel room near the old station, carrying whatever he was carrying, waiting for whatever was going to come next.

As was she.

The harbor bell rang the late hour. Aurevik went quiet under its snow. And on White Lantern Street, the lanterns kept burning in their windows, small patient lights in the dark, waiting for no one in particular and everyone who was needed.

---

She was at the archive by seven the next morning.

The night's monitoring had produced two new passive captures from the aurora activity — both from frequencies unrelated to Frostline 19, both routine, both logged automatically by the system. She processed them without particular attention, her mind running the calculation she had been running since yesterday morning, the one that kept arriving at the same unwanted conclusion.

She needed the aurora data. She needed it from the primary source. There was no other option that would give her the resolution she required for the forty-one second fragment.

She opened a new email draft.

This time she wrote something.

*Re: Frostline 19 Aurora Veil Data — Research Request*

*I am the senior restoration specialist at the Northern Sky Archive in Aurevik. I am currently working on acoustic reconstruction of a signal capture from the night of January 14th, seven years ago, which requires high-resolution magnetic field data from that date. Your research records from the Rook Weather Tower monitoring station would provide the resolution I need to complete this work.*

*I understand you are currently in Aurevik. I would appreciate the opportunity to discuss access to your data.*

She stopped. Read it back. It was professional. It was precise. It stated exactly what she needed and why and nothing else. There was not a single word in it that was not strictly necessary.

She deleted the line about knowing he was in Aurevik. That felt too much like surveillance.

She added it back. It was a small city. Everyone knew he was here. Pretending otherwise was its own kind of statement.

She deleted it again.

She sent the email without it.

Then she sat at her workstation and told herself that she had done the correct professional thing, and that whatever came next would be handled with the same correctness, and that the feeling in her chest was not anxiety but simply the awareness that a process had been set in motion that she could not now stop.

The reply came eighteen minutes later.

No greeting. No explanation. Just: *I have the data. Tell me when.*

She read it three times.

Three words at the end that she could not stop thinking about. *Tell me when.* Not *let me know when is convenient* or *I'm available most days* or any of the normal hedging language of professional correspondence. Just the plain statement that he would come when she was ready, at whatever time she named, and he would wait until she said so.

It was the most considerate thing anyone had said to her in connection with Einar Rook, and it had come from Einar Rook, and she did not know what to do with that.

She typed a time and a date and sent it before she could change her mind.

Then she went back to her work queue and processed two more files and did not think about it, except for the parts of the day when she could not help thinking about it, which was most of them.