Alex started keeping the lights on.
Not all of them, not in a way Charlotte would notice immediately, or in a way he couldn't explain if she did. Just the hallway light, left on through the night when it had always been switched off at ten. The kitchen light when he got up at two or three in the morning and stood at the counter with water he didn't drink. Small adjustments to the dark that he told himself were habit and knew were not.
He had slept badly before. There had been a period after Daniel, after the call and the drive and the family liaison officer and the small bag that was too small, when sleep had been a negotiation he lost most nights. He remembered the particular quality of that insomnia. The way it had felt purposeful, like his body had decided that unconsciousness was a liability it couldn't afford until things were more certain than they were.
This felt like that.
He didn't know why. That was the part that sat with him in the kitchen at three in the morning, not the sleeplessness itself but its source, which he couldn't locate cleanly. Nothing had changed. Charlotte was fine. The archive message was sitting unopened on the server and they had agreed without discussing it that it would stay there until she was ready and she wasn't ready yet and that was fine. Everything was fine.
He stood at the kitchen counter and drank his water and listened to the apartment being quiet around him.
The thing about teaching physics to fifteen-year-olds was that it required a quality of attention that left very little room for anything else during the hours it was happening. Alex had always found this useful. The classroom was a contained system, defined parameters, measurable variables, problems that had solutions even when the solutions were complex. He understood contained systems. He was good at them.
It was the uncontained ones that troubled him.
He sat in the staffroom on Thursday at lunch and marked papers and did not think about the archive message and thought about the archive message. Eleven seconds. He had looked up the timestamp again on Tuesday and confirmed it was eleven seconds and then closed the interface and not opened it since. Eleven seconds from a man who had been dead for fifteen years, routed through an archive system that preserved messages flagged as time-delayed delivery, sitting in a server somewhere waiting with the patience of something that had been designed to wait.
Daniel had set it to deliver. At some point, to some condition, he had decided this message should arrive.
The condition that had triggered it was what Alex couldn't stop turning over. The archive system used several delivery parameters, calendar date, recipient age, external event triggers linked to public record systems. He didn't know which one Daniel had used. He didn't know if knowing would make it better or worse.
Margaret from the history department put a cup of tea beside his elbow without being asked. He thanked her without looking up. The papers were bad, second years, energy theory, the same conceptual gap appearing in seventeen different handwritings, the point where the abstraction stopped feeling like anything real to them. He had a lesson plan for that. He had a lesson plan for most things.
He marked the papers and finished the tea and went back to his classroom.
That night he found the number.
It was in the physical address book he kept in the second drawer of his desk, a small spiral-bound thing that Charlotte had given him eight years ago as a slightly ironic birthday gift because he was the last person she knew who kept a physical address book. He had used it for exactly that reason. Some things were better not in any system.
The name above the number was M. Osei.
He sat at the desk for a long time looking at it.
MiriamOsei had worked with Daniel in the early years, not in his specific research division but adjacent to it, in the broader ability science program that 18Labs had run before it formalised into what it was now. She had left the company three years before Daniel died, quietly and without the kind of exit that generated paperwork. Alex had met her twice, at institutional events he had attended because Daniel had asked him to. He remembered her as a woman who said less than she knew, which at the time he had read as reserve and later had reread as caution.
After Daniel died she had sent a card. A physical card, handwritten, brief. He was the best of what that place could have been. I'm sorry. An address in the outer districts as a return. No phone number.
The number in the address book had come later, six months after the card, a call he hadn't expected, a conversation that had lasted twenty minutes and had covered nothing directly but had left him with the clear impression that she was checking on something specific without being able to say what. She had asked about Charlotte once, carefully, and he had answered carefully, and they had not spoken since.
That had been twelve years ago.
He looked at the number.
The hallway light was on. Through the wall he could hear the small sounds of Charlotte at her desk, the occasional shift of her chair, the quiet that meant she was writing rather than the different quiet that meant she was staring at the screen. She had been working on the submission more consistently this week. He had not commented on this. He had learned early that commenting on the submission was the fastest way to make her stop working on it.
He picked up his phone.
He put it down.
He picked it up again and held it for a moment and thought about Daniel, not the careful man, not the person in the photograph, but the specific version of his brother that had existed in the last year of his life. The version that had started calling more often. That had asked, in the last conversation they'd ever had, whether Alex thought Charlotte was happy. Not healthy, not doing well, happy. Alex had said yes, she was four years old and largely happy about most things, and Daniel had been quiet in a way that Alex had catalogued as tiredness and later recatalogued as something else entirely.
He dialled the number.
It rang four times. He was composing the shape of a voicemail when the line opened.
"AlexWaite," said a voice. Not a question.
He paused. "You still have my number."
"I have a lot of numbers," Miriam Osei said. "I wondered when you'd use yours." A brief pause, the quality of someone moving to a different room. "How is she."
The directness of it landed without warning, no preamble, no social architecture, straight to the point that they both apparently understood was the point. He felt something shift in his chest. The particular sensation of a suspicion confirmed.
"You know," he said.
"I know some things," she said carefully. "Not everything. Daniel was careful about what he told anyone." Another pause. "The message delivered."
"How do you know about the message."
"Because I'm one of the conditions." Her voice was even, the cadence of someone who had been sitting with a thing long enough to have made a certain peace with it. "He set it to deliver when two conditions were met simultaneously. The first was Charlotte's eighteenth birthday."
Alex closed his eyes briefly.
"What was the second," he said.
"An ability expression event outside documented Tier 1 parameters." A pause. "Logged by an 18Labs detection grid."
The kitchen was very quiet. The hallway light came under the door in a thin line. Alex sat at his desk with his phone against his ear and looked at the address book open on the surface in front of him and thought about Charlotte at her desk in the next room, the sounds of her working, the familiar ordinary quiet of it.
"She doesn't know," he said.
"I know she doesn't know."
"How long have you..... "
"Long enough." Miriam Osei's voice was careful and steady, the voice of someone delivering something they had been carrying for a long time. "Alex. The grid flagged her two weeks ago. Which means 18Labs knows something is there. They don't know what yet, the eastern grid runs low resolution, the signal would have read as an anomaly rather than a confirmation." A pause. "But they'll be looking now."
Alex said nothing.
"I think it's time to read the message," she said.
The thin line of light under the door. The sounds of Charlotte in the next room.
"I know," Alex said.