He took the long way back to his desk.
Not because he needed to. Because twenty two years of fieldwork had taught him that the long way was sometimes the only way to put your face back in order before anyone needed to look at it.
He took the east corridor, past the evidence processing wing, past the closed door of the Priority One investigation room that had nothing to do with him, past the junction that split toward the public intake on the ground floor.
He was almost at the stairwell when he heard it.
Nothing dramatic. Just a voice, coming from the stairwell door that someone had left propped open with a doorstop. Low, unhurried, talking to nobody in particular the way people do when they're comfortable in a space they have no business being comfortable in.
"The coffee here is genuinely terrible."
Koshva stopped.
He looked at the propped door. Then pushed it open.
The man was sitting on the third step from the bottom with a paper cup and the unhurried posture of someone who had nowhere to be and had made peace with that. Mid-height. Unremarkable clothes, the kind that were slightly too considered in their unremarkableness. Brown eyes. The kind of face your eyes wanted to move past and then didn't, quite, if you were paying attention.
He looked up when Koshva came through the door.
"Sorry," he said. "Am I in the way?"
"No," Koshva said.
He kept walking. Got to the second step. Stopped.
'Nobody sits in the stairwell,' he thought. There were three chairs in the lobby, a full break room on the fourth floor, a bench outside the east entrance. Nobody sat in the stairwell unless they were waiting for something that couldn't be seen from those locations.
He turned around.
The man was looking at his coffee cup. Not at Koshva. The deliberate non-looking of someone who knew they were being assessed and had decided the best response was to give it nothing to work with.
"You're not Authority," Koshva said.
The man looked up. Mild surprise, done well enough that it would have worked on someone less tired. "Sorry?"
"Your badge is a visitor pass. Day issue. You came in through the public intake on the ground floor." Koshva leaned against the stairwell wall. "Which means someone inside signed you in. Which means you have a contact here. But you're not waiting near anyone's office." He paused. "You're waiting in a stairwell with a camera blind spot."
The man looked at him for a moment.
Then he smiled. Small. Not apologetic, not caught-out. The smile of someone who had just decided a conversation was going to be interesting.
"Micheal," he said. Not offering a hand. Just the name, placed in the space between them with the precision of a man who understood exactly what names were for.
"Koshva." He didn't move from the wall. "What are you investigating."
A beat. The specific beat of a man recalibrating.
"What makes you think I'm investigating anything?"
"The notepad in your left breast pocket," Koshva said. "It's the cheap kind. The kind you buy when you go through them fast because you're always writing things down. The pen next to it has three different ink colors on the cap, which means you color-code." He looked at the coffee cup. "You've been here long enough for the coffee to go cold and you haven't moved. You're not waiting for a person. You're waiting for the right moment to talk to one." He tilted his head. "And you're in the one spot in this building where a conversation can happen without it being on record."
Micheal looked at him with those brown eyes that were doing considerably more work than they appeared to be.
"You're good," he said.
"Twenty two years," Koshva said. "What are you investigating."
Micheal turned the paper cup in his hands once, slowly. The gesture of a man deciding how much of the truth was useful at this particular stage.
'I've seen that gesture recently,' Koshva thought. 'I've seen it on someone else. In a room in Sub-level 11.'
The thought arrived with a cold, specific clarity.
'He's not here by accident,' Koshva thought. 'He was never here by accident. He's in the one blind spot in this building, at the one time of day when I always take the long way back, because whoever he is, he's done enough watching to know my patterns.'
'He's here for me.'
'The question is whether he knows what I did last night.'
He kept his face completely neutral. The face he'd worn in Valentina's corridor. The face he'd worn for most his life.
"The 734 case," Micheal said. Quiet. Not a question.
The stairwell was very still.
"Funny," Koshva said, after a moment. His voice came out level. He was proud of that. "So am I."
Micheal looked at him. Something in his expression settled, the way an equation settles when the last variable resolves. He reached into his jacket pocket and produced a second paper cup.
Still warm.
"I got you one," he said. "Figured you'd come this way eventually."
Koshva looked at the cup for a long moment.
Then he took it. Sat down on the step next to a man he'd never met, in a camera blind spot in a building he'd worked in for twenty two years, and drank coffee that was, genuinely, terrible.
"Talk," he said.