He found her by accident.
He had been coming to the library every afternoon for three weeks. Same corner, same spot — back against the eastern shelf, lamp to the left, the window's narrow light falling at the angle he'd learned to use for reading the smaller tablet script. He had never seen anyone else use the space.
On the afternoon of his eighteenth day back from Sparta, someone was sitting in it.
Cross-legged on the floor, a tablet in her lap, reading with the complete unselfconsciousness of someone who had been coming here since long before he had.
He stopped in the doorway.
She didn't look up.
He considered his options briefly and sat down against the opposite shelf.
She still didn't look up.
He pulled out his shard and started working through the morning's new words. The supply inventory had given him a cluster of agricultural terms he needed to consolidate — storage rotation, the specific vocabulary of things that degraded if you weren't watching. He ran through them quietly, testing each one against its context.
After a while she said, without looking up from her tablet:
"You move your lips."
He looked up.
"When you are reading," she said. "Your lips move slightly. You are not reading — you are reciting something. Checking it."
She turned a page.
"What are you checking."
He looked at her properly for the first time.
The same age as him, roughly, or close to it — but with the specific quality of someone who had been paying attention to things for longer than their years suggested. Dark hair loose around her shoulders, not styled the way most of the palace women styled theirs. A practical tunic. Charcoal on her right hand from something she'd been doing before she came here.
She was still looking at her tablet.
He said: "Vocabulary. I count my words."
"Why."
"Because I like to know where I am."
She was quiet for a moment.
Then: "That is a strange habit for someone who has spoken this language since birth."
She turned another page.
He went back to his shard.
He worked through six more words before she spoke again.
"You are the third son."
"Yes."
"The one who went to Sparta."
"Yes."
"And came back with a treaty."
"Ampelos came back with a treaty. I assisted."
She looked up at him then — the first time she'd looked directly at him. The look was not unfriendly. It was the look of someone who had heard something and was checking it against the actual person to see if they matched.
"Ampelos does not give credit easily," she said.
"People keep telling me that."
"Because it is true," she said, and went back to her tablet.
Her name was Arsini.
He found this out on the second afternoon, again by accident — she referenced a tablet by its author, who turned out to be her father, and mentioned it in the offhand way of someone who had stopped thinking of the connection as notable.
He learned the rest gradually.
Her father was a military officer — mid-rank, western perimeter, fifteen years in the same position. Solid. Reliable. Unremarkable in the way that competent people in unglamorous roles were unremarkable.
Arsini, from everything he could observe, was nothing like a solid man.
She came to the library every afternoon. Theris, the librarian — an old man who communicated mostly through sighs — treated her with the resigned familiarity of someone who had accepted her as a permanent feature of the room. She read everything. Not one subject. Not the administrative tablets most people came for. She read military records and trade correspondence and astronomical observations and agricultural reports and the philosophical texts that had drifted through Troy's port from various directions over the years.
She read all of it with the same focused attention.
She did not explain herself.
He found this interesting.
The first real conversation happened on the fourth afternoon.
She initiated it. She looked up from her tablet with the particular quality of someone who had been deciding whether to say something and had finally decided yes.
She said: "You were listening."
"I usually am."
"No — specifically. Yesterday. In the corridor outside the eastern hall. There was a supply meeting. You were not in the meeting but you were in the corridor for most of it."
He had been. He hadn't thought anyone had noticed.
"I was passing through," he said.
"You passed through once. Then you came back and passed through again in the other direction. Then you stood near the window for approximately the length of time the meeting lasted."
"You were watching me."
"I was coming back from the records room. I passed the corridor three times. You were there each time." She looked at him. "What were you learning."
He considered the answer.
"The supply manager's vocabulary. The specific words he uses for different grades of stored grain. It is useful to know how the people who manage things actually talk about them — the official language and the working language are not always the same."
She was quiet for a moment.
"Most people would have gone into the meeting," she said.
"I was not invited. And people speak differently when they know they are being observed officially. I learn more from the corridor than I would from the chair."
She looked at him with the expression he was starting to recognize — not unfriendly, not warm, the expression of someone checking whether what they were seeing was real or performed.
"You think about how to get information," she said. "Before you go after it."
"Yes."
"Most people don't do that."
"I know."
She went back to her tablet.
After a while she said: "The treaty. The clause about Helen."
He looked up.
"I read the administrative copy," she said. "In the records room. Her name is in the document as a party. Not as a subject. That is not something I have seen before."
"It has not been done before."
"Whose idea was it."
"Mine."
She turned a page.
"Why," she said.
He said: "Because the treaty needed to be stable. A treaty that everyone in both houses is invested in is harder to break than one that only the kings are invested in."
"That is the official reason," she said.
He looked at her.
"What do you think is the unofficial reason."
"I think you met Helen," she said. "And I think you understood something about her situation. And I think the clause is what happened when you tried to fix it with the tools you had available."
She said it plainly. Not fishing, not testing. Just: this is what I think I see.
He was quiet for a moment.
"You read very carefully," he said.
"Yes," she said. "It causes problems."
On the sixth afternoon she asked the question he had been waiting for.
Not waiting for exactly — not prepared for, not dreading. Simply the question that he had felt coming in the gradual accumulation of her attention.
She said: "The fall."
"Yes."
"Everyone says it changed you."
"Yes."
"What actually happened."
He put down his shard.
He looked at her — the direct dark eyes, the absence of performance, the person who read everything and connected things and had noticed that he listened like someone translating one step behind the surface.
He said: "There is a version of that answer that is true. I cannot tell it to you yet."
She looked at him.
"Yet," she said.
"Yet."
"Why not yet."
"Because some things need time before they can be said. The time is not right."
She was quiet for a moment.
"That is a more honest answer than most people would give," she said.
"I try to be honest when I can. When I cannot, I prefer silence to the alternative."
"Most people choose the alternative."
"I know. It is expensive."
She looked at him for a moment longer.
Then she said: "All right."
Just that. Not pressing, not conceding — simply acknowledging.
She picked up her tablet.
He picked up his shard.
They read in silence for the rest of the afternoon, the library quiet around them, the narrow window light shifting as the sun moved, and neither of them felt the need to fill it.
That, Lysander thought, was a promising sign.
He walked back to his room in the early evening and thought about what he had found.
He had been building a list in his head since he arrived — the people he needed, the roles they would fill, the shape of the network he was trying to construct. Fylon for internal information. Someone for medicine. Someone for the ships. Someone who could move through parts of the city he couldn't easily access.
Arsini was not on the list yet.
But she read everything. She connected things other people kept separate. She had noticed, in the administrative copy of a treaty, something that most people would have read past without registering. She had understood, from that single detail, something true about why the clause was there.
That was not a skill you could train quickly.
That was something a person either had or didn't.
Not yet, he told himself. You have known her six days. Trust is built slowly or it breaks at the wrong moment. Do the work first.
He picked up his shard.
Six hundred and thirty-eight words.
He ran through the new ones until the lamp burned low.