The return from Vienna is harder than the return from Paris.

She has been trying to understand why, in the three weeks of the quiet period that follows displacement, and the answer she keeps arriving at is this: Paris was a revelation. She had not known, before Théo, that she could be fully present. Vienna was different. Vienna was the knowledge applied — the deliberate choice to be present, made by someone who understood what it would cost.

You can be surprised by cost the first time. The second time, you chose it.

She sits in the recovery wing with the field log and the personal journal and the compact-mirror device that is her only constant across fourteen assignments, and she thinks about Friedrich Haas conducting the opening of Elise Hartmann's symphony in the Brahms-Saal, his name on the program, his institutional authority placed in service of a thing he believed in. She thinks about the last morning, the pension room, the low candle.

She thinks about thirteen letters she has not read.

The archive is four floors below the recovery wing. She does not go to it.

Moss comes on the third day.

"Vienna," Moss says, sitting. "Strong field log. The thread is verified — the Hartmann score is in the Gesellschaft archive, catalogued, confirmed in the 1927 monograph." She pauses. "The Haas reading happened three months ahead of the projected timeline."

"He decided quickly once he read it," Sera says.

"The earlier TCB trace in the archive," Moss says. "The C-7 note."

"I documented it," Sera says. "Fully."

"Yes." Moss's voice is level. "You did."

Sera looks at her. Moss is fifty-one years old and has been director of the Bureau for nine years. She has the specific quality of attention that Sera has, across four years and thirteen assignments, learned to read: the attention of someone who is managing a gap between what they know and what they're saying.

"Who is C-7?" Sera asks.

A pause. The precise length of a pause that is not surprise but is the calculation of a response.

"That's in the classified file," Moss says. "Above field-operative clearance."

"I'm asking you," Sera says. "Not the file."

Moss holds her gaze for a long moment. Then she stands.

"There's an assignment on your desk," she said. "Pasadena. 1984. Read the brief. We'll talk when you're out of the quiet period."

She goes.

Sera sits with the closed door for a long time.

She goes to the archive.

She does not open the letters.

But she stands outside the archive room for considerably less than eleven minutes.