The invitations arrived on the same day, which was not a coincidence.

Adeline received hers at the workshop, delivered by a messenger in Valois livery who waited with the particular patience of someone who had been told to wait. The card was extraordinary — even by the standards of Florence, where the production of social correspondence had been elevated to something approaching competitive sport, this card was extraordinary. Black paper with silver engraving, the Valois crest in relief at the top, and a scent so carefully integrated into the paper itself that she could not have said whether it was on the surface or in the fiber, only that it was there.

A masquerade. Three weeks from tonight, at the Valois townhouse. *For the pleasure of your company,* the card said, which was how Viviane de Valois invited people to things she had designed as battlefields.

She learned that Raymond had received a matching invitation when she arrived at the laboratory that afternoon and found him holding it at arm's length with the expression of someone examining an insect of uncertain toxicity.

"She sent them separately," he said.

"Yes." Adeline set down her things. "Not together. Not as a pair. Separately."

"Which means she wants Florence to see us arrive separately or not at all."

"She wants Florence to see us manage our relationship to her schedule." Adeline sat at her bench and looked at the machine, which was taking shape with satisfying speed under the compressed timeline. "If we don't go, we signal that we're avoiding her ground. If we go separately, we signal that we're managing our association carefully, which is effectively an acknowledgment that it requires management."

"And if we go together."

"We signal that we've decided it doesn't."

He set the invitation on his bench. "Florence will draw conclusions."

"Florence draws conclusions about everything. The question is whether we allow Florence to draw the conclusions it would draw from our absence, or whether we appear and provide a different set of data."

Raymond looked at the invitation for a moment. Then he looked at her with the direct quality of his attention that she had come to find less disconcerting than she initially had, though it still required a certain amount of meeting rather than deflecting. "I don't have anything appropriate to wear to a Valois masquerade," he said. The statement was entirely without embarrassment — a simple logistical fact, delivered as such.

"I know," she said. "I'll arrange something."

She called the family's tailor that evening. Ferretti had been dressing the de Monet family for thirty years, which meant he had opinions about everything and shared them without being asked and was also extraordinarily good at his work. She gave him Raymond's approximate measurements — she had a good eye for measurements, it was a professional tool — and a description of the aesthetic she wanted. She did not explain why she was ordering a garment for a man who was not a member of her family. Ferretti did not ask.

The fitting took place in the laboratory two days later, which was the only venue with sufficient unobstructed floor space. Raymond stood in the center of the cleared area between the benches with the expression of a man who had decided that if this was the cost of attending the Valois masquerade under useful conditions, he would pay it without comment.

Ferret measured in silence, which was unusual for him. He made his adjustments to the preliminary mockup — the jacket's shoulder line, the waistcoat's cut, the specific drape of a coat that was designed to make its wearer look like someone who had never thought about what he looked like, which was the most technically demanding garment construction. He pinned. He assessed. He unpinned and repinned.

Adeline worked at her bench through this process. She did not watch. She was focused on the tertiary pressure housing, which required her full attention and which she was giving her full attention.

Ferret turned to her with a color swatch and said: "The lining, Miss de Monet. For the jacket interior. I have three options that would suit the cloth."

She looked at the swatches without getting up from the bench. The first was dark green, the second was charcoal, the third was a deep blue with a faint mineral quality to it — not quite the color of water, not quite the color of stone, something between those two and more specific than either.

"The third," she said, and returned to the pressure housing.

There was a silence in the room that was slightly different in quality from the silence that had preceded it. She was aware of it without looking up.

After Ferret had gone — taking his pins and his swatches and his professionally maintained discretion — Raymond said, from the center of the room where he was still standing: "You know what color works for me."

"I observe," she said, without looking up. "It's a professional skill. Pattern recognition from visual data."

"The lining is not a structural component."

"A garment's lining affects the wearer's comfort and therefore performance. In a social context that is itself a kind of performance, comfort is relevant to outcomes." She made a note in the margin of the technical drawing she was working on. "The blue matches your eye color, which creates a visual coherence that Florence will read as intentional self-presentation rather than haphazardness. It will alter how people approach you before you have said a word."

A pause. She heard him cross the room to his bench.

"That's a detailed analysis of a lining choice," he said.

"I think in detail." She set down her pen. "We need to agree on a cover story. Florence will ask why we came together. It should be simple enough to be credible and true enough to be consistent under repeated questioning."

"Or we could tell the truth."

She looked up at him. He was at his bench, not looking at her, making a note with the focused quality he brought to technical record-keeping.

"The truth," she said.

"That we are building something that will matter. That we came together because the work requires it and because the work is worth it." He looked up then, briefly. "Everything else is either true or irrelevant."

She considered this. It was clean, in the way his technical solutions were clean: minimum components, maximum function. It was also, she recognized, not entirely a description of the work.

"All right," she said. "That's the story."

He nodded and returned to his notes.

The garments were delivered four days later. Ferretti had outdone himself — Raymond's jacket and coat were precisely the thing she had described, the thing that looked effortless and was in fact the product of thirty years of practiced craft, and the lining was the exact mineral blue she had selected from the swatches. He brought it to the laboratory in a cloth bag and hung it on the hook by the door, which was the only hook available, which meant it hung next to her winter coat.

She came in later that evening to check the overnight distillation run and saw the two garments hanging together in the lamplight — her dark green coat and his blue-lined jacket, their respective shapes familiar from separate contexts, together in a frame she had not composed.

She stood in the doorway for a moment.

Then she went to check the distillation and did not look at the hook again.