Florence said things with invitations.

Adeline had known this since she was old enough to attend social events and young enough to still find the encoding interesting rather than exhausting. The city's upper social layer communicated through the medium of paper — who was invited to what, in what order, on what paper stock, with whose crest embossed on the envelope flap. A Tuesday invitation implied different things than a Thursday invitation. An invitation to dinner implied different things than an invitation to tea. An invitation to tea that arrived less than forty-eight hours before the event implied something very specific, which was that the sender had just learned something and had decided they needed to act on it immediately.

Adeline received four such invitations in three days.

The first was from the wife of one of her father's business partners, a woman who had always been pleasant to her in the distant, mildly puzzled way that women of her generation were pleasant to young women who refused to behave like young women. The note expressed a desire to reconnect. The timing said: I have heard something and I am deciding whether to be concerned.

The second was from a cousin she saw twice a year at family functions, whose note was warmer and shorter and whose timing said: I have heard something and I am genuinely curious.

The third was from a woman she had never met, whose connection to her social world was through her husband's membership in the same club as her father, and whose note said nothing except that it existed, and whose timing said: someone asked me to reach out and I am doing so.

The fourth was from Marguerite Delacroix, who had been one of her school companions and who was among the small number of people Adeline considered a friend in the functional rather than merely social sense of the word. Marguerite's note said, in Marguerite's characteristic directness: *I am told you have been spending a great deal of time with Raymond Vance. I am not judging this. I am inviting you to lunch because I think you may need someone to talk to who is not either Raymond Vance or a professional contact. Also the soup at the Café Ricci is very good right now.*

Adeline had gone to lunch with Marguerite and eaten the soup, which was in fact very good, and said nothing that could not have been said in public, and come away feeling that she had managed the social terrain adequately while also feeling, in the part of herself that she did not usually consult for assessments of social situations, that she had managed it adequately rather than well.

The letter from her father arrived on the fourth day.

Édouard de Monet was not a man who used letters for communication he could accomplish in person. He lived twelve minutes' walk from her workshop. When he had something to say to her, he generally appeared at the workshop door with the expression of a man who had been thinking about something for several days and had decided that continuing to think about it was less efficient than addressing it directly. The letter, therefore, meant something specific: he had thought about this enough to want to be precise about it, and he had wanted to be precise before he saw her face.

She read it standing at the workshop counter, with the same attention she brought to technical documents.

The letter was careful. Her father was always careful — it was one of the qualities she had inherited from him, the instinct to construct precisely before committing anything to a permanent medium. He did not mention Raymond by name. He mentioned, in the way of someone establishing context rather than argument, that he had had some conversations in the past week that had given him cause to think about the workshop's position in relation to certain elements of the city's commercial infrastructure. He mentioned that he had heard the petition before the Academy had been formally docketed and that there were people in his network who were treating it as significant. He asked, with the specific courtesy that characterized his most careful letters, whether she would come to dinner.

She went.

Her father's house was four streets from her own, the house she had grown up in, and it smelled the way it had always smelled: old wood and good fabric and the trace of pipe tobacco from her grandfather's era that had lived in the curtains for forty years. Édouard met her in the study rather than the dining room, which meant the conversation was serious, and he poured two glasses of wine before sitting down, which meant he had decided to approach it as a discussion rather than a directive.

He asked about the machine first. This was his method: establish genuine interest before raising concern, so that the concern appeared as context rather than agenda. She told him about the machine's current status — the integration tests, the Exposition timeline, the compound calibration work — in the technical language she used with people who were intelligent but not specialists, which her father was. He asked good questions. He always asked good questions.

Then he said: "Leonard Beaumont came to my club on Wednesday."

She set down her wine glass.

"He was very pleasant about it," her father said. "He spoke about investment opportunities in precision technology. He mentioned the Exposition. He mentioned, in the way that people mention things they want you to know they know, that he had had conversations with several of our current contract partners about their upcoming renewals."

The contract partners. Three of them held agreements that came up for renewal in the next eight months. Together they represented approximately a third of the workshop's commercial income. Viviane had expanded from academic harassment to commercial pressure, and she had done it through Leonard, and she had done it precisely.

"How many have been contacted," Adeline said.

"At least two. Possibly all three." Her father looked at her with the expression he used when he was about to say something he had rehearsed. "I want to help, Adeline. I have relationships with these people. I can have conversations that contextualize the situation — explain that the workshop is in a strong position, that the Exposition will be a significant public success, that the current disruptions are temporary. I can also, if you wished, speak to Leonard directly. There may be terms that are acceptable to everyone."

Terms acceptable to everyone. She knew what this meant. Leonard's terms were known. They were acceptable, in the sense that they would not destroy anyone. They would simply transfer the machine — the work of the past three years, the counterformula and the compound housing and the nights when she and Raymond had synchronized their rhythms across an apparatus neither of them had built before — into the service of people who would use it as a weapon. Packaged neatly, legally, with her name on the patent and the function stripped out.

"He's my partner," she said.

Her father looked at her.

"Raymond Vance," she said. "He is my partner in this project. Not my assistant, not my subcontractor, not my temporary collaborator. The compound architecture is his work. The olfactory calibration system is his design. The machine does not exist without him." She picked up her wine glass. "I don't abandon partners."

Her father was quiet for a moment. He was not a man who spoke before he had decided what he wanted to say.

"I'm not suggesting you abandon him," he said carefully. "I'm suggesting that there may be configurations that protect your interests while —"

"While removing him from the project. Yes." She looked at her father with the specific quality of attention she had inherited from him, the one that went all the way through and came out the other side. "That's what Leonard is offering and that's what Viviane wants and I understand the logic of it clearly. I'm telling you that the answer is no."

Édouard de Monet was silent for a moment longer. Then he said, quietly: "This is more than the project."

It was not quite a question.

"The contract partners," she said. "I'll speak to them directly. Before Leonard does any more damage."

Her father nodded. He did not push further, because he was a man who understood the difference between positions that could be argued and positions that had already been decided, and he knew which one he was looking at.

She walked home in the late evening and did not take the direct route. She took the longer route, the one that went past the Via dei Servi, the one with the gas lamp on the old stones. She walked slowly and she thought about what she had said — not the reasoning, she had been through the reasoning — but the moment when she had said *partner* and had meant something more specific than the word's professional definition.

The phantom smoke did not come.

She put her hand in her coat pocket. Cold iron and sawdust and amber light. She walked the rest of the way thinking about nothing in particular, and arrived at her door, and stood for a moment on the step before she went inside.

The next morning she went to the laboratory before her workshop, using the side entrance, and found Raymond already there.

"Viviane's moving against the commercial contracts," she said.

"I know." He did not look up from the distillation. "Sit down. We need to change the timeline."

She sat. Outside, Florence was beginning its day in the indifferent way it always did, and the laboratory was warm and smelled of the morning's work, and she was here, and he was here, and the machine was closer to finished than it had ever been.