The frame held for less than a second. Then the feed dropped back to the empty corridor, blue and clean, no hand at all.
Mira did not move. She had spent enough hours over bad optics to know the difference between a ghost of compression and a real object. That had been real. That had been a thumb she had watched close a valve wrench a thousand times when it was small enough to fit inside her two hands.
"That's a loop," she said. "You're playing me a loop."
"I'm playing you the maintenance channel," Fane said. "Whatever it repeats, it repeats because he is standing where the camera can see him. The tower is not lying to you, Mira. It has never lied to you. That has always been my part of the arrangement."
Gideon had the weapon steady, but his eyes were on the wall panel, not on Fane. She watched him do the thing he did when a room was about to become a problem he could not shoot his way out of. He stopped looking at the man and started looking at the machine. His free hand went flat against the return console, fingers spread, reading the command log through his skin the way Anika had taught them both to do in the first week, when neither of them could stand the sight of the other.
"The return order," Gideon said. "It carries our archive signature. Ours. Which means it was sent by something wearing our credential." He turned his hand over. Amber crept along the seam of his palm, matching hers, the fused mark answering the console. "There are exactly three things in this tower that can do that. Mira. Me. And the room they keep us in."
"Very good," said Fane, in the voice he used for slow students who arrived late at the obvious.
Gideon lifted his hand off the panel. "So who was in Witness Room Nine to send it?"
And there it was. Mira felt the answer arrive before Fane could shape his mouth around it, the way you feel a compound go exothermic a half-second before the thermometer agrees. She had built the lie in Chapter of her own life two days ago and fed it to her brother with both hands. She had told him his override was amateur work. She had called it a child's forgery of a real credential. She had said it in the flat voice she saved for people she needed to keep away from things that would eat them.
She had told him his signature wasn't good enough to matter.
And Tovan, who repaid every debt in the currency of ruin, had gone and made it matter.
"He copied us," she said. Her own voice sounded distant to her, a measurement taken from another room. "He got into Nine and he ran the return under our archive tag. That's what opened the vault to him. Not proximity acquisition. He walked into the acquisition. He sent for himself."
Fane inclined his head, pleased, and she wanted to break something across the neat parting of his hair.
"He is a maintenance chemist with an unlicensed override," Fane said gently. "He has spent eight months routing diluted precursor through the water systems to keep his own signature warm. Did you know that? I doubt it. You were busy hiding him. He was busy making certain that when the day came, he would still read as viable. Your brother has been curing himself like a specimen for the better part of a year, Mira, because he decided long before either of us that if a source witness was ever needed, it would be him."
The corridor on the feed stayed empty. Somewhere behind that glass Tovan was walking, and the camera only caught his hand when he pressed it to the wall to steady himself, which meant he was moving slow, which meant it was already starting.
"Eight months," she said.
"He does not want you to save him." Fane's patience was the worst weapon in the room. "He wants to pay you back. You gave him an education with money you earned poisoning evidence. He has never forgiven you for it. This is how men like your brother forgive."
Gideon said, very quietly, "Stop talking to her."
It was not loud. That was the thing about him she had stopped being able to ignore, somewhere between the vault and this lobby. He did not raise his voice when he was angriest. He lowered it, until the words had edges, until you leaned in to catch them and found yourself closer to him than you meant to be. He had done it in the cell the first night, when Armit's voice had come through the door offering them terms, and Mira had realized she was straining toward the sound of a man she despised because his quiet was the only thing in the room that wasn't performing.
He put himself, without seeming to decide it, one half-step between her and the empty lift. Between her and the corridor where her brother was walking toward a piece of glass that would drink him.
"Fane," Gideon said. "You have a live source witness delivering himself to your reference door. That's everything you came down for. Two chapters of you steering us and now the boy does it for free. So answer one question and I'll believe a single word you say." He tilted the weapon, not at Fane's chest. At the console. At the return command still glowing on the wall. "Why do you need us in the room when he signs?"
Fane's smile changed. Only slightly. It was the smile of a man who had prepared for every question but that one, and was rearranging himself to survive it.
"Because a source witness resets the scaffold," he said, after a pause that was one beat too long. "It does not free anyone standing outside the acquisition. The separation still requires the fused pair present at the seal. He can give the reference. He cannot give it to no one." He spread his hands, the reasonable man, the mentor. "He is not sacrificing himself to release you both from a distance, Mira. He is sacrificing himself so that you and Investigator Holt can walk into that vault and be cut apart over his body. He did not come to save one person. He came to save two. You never told him it takes three."
The number landed in her like a temperature.
Three. Herself. Gideon. And the thing the vault would keep when it was finished. She had done the arithmetic in the dark of the cell a dozen times and never let it resolve, because resolving it meant admitting she had always known the shape of the trade and had let her brother walk into it uninformed, exactly as she had let Gideon press his hand to the glass in Chapter with a cruelty she'd dressed as respect for his choice.
"He doesn't know," she said.
"No," Fane agreed. "He thinks he is buying you a whole life. He is buying you half of one and a funeral."
On the feed the hand appeared again. Longer this time. Not steadying itself. Pressed flat and holding, thumb burned, fingers spread wide the way you spread them when you want a machine to be sure of you, when you are begging a door to take your measure. The amber under the skin had climbed past the knuckles. It was in the web of his hand now, in the vessels, lighting him from the inside like a held breath.
Mira looked at that hand and heard her own voice from two days ago telling him his signature wasn't good enough.
She had built her whole science on making things disappear without a trace. She had never once managed it with him. Every debt she thought she'd erased he kept a copy of, in the one place she could not raid.
Gideon lowered the weapon. He did not put it away. He simply stopped aiming it at anything, which from him was its own kind of decision, and looked at her, and asked the narrow question he always asked when the wide one would have let her lie.
"How far is that corridor from the vault door?"
She knew the answer to the meter. She had walked the service run herself, years ago, mapping the routes that let a person move through Veyra without being witnessed.
"Two hundred meters," she said. "He's walking. Slow. Call it four minutes."
"Then we have four minutes to decide whether we let him spend himself on a lie you told him," Gideon said, "or whether one of us goes down there and tells him the truth first."
He held her eyes when he said it. He did not say *you.* He did not say *me.* He left the pronoun open on the table between them like the last card in a hand, and she understood, with a lurch that had nothing to do with the marker singing in her palm, that he was giving her the choice she had refused to give either of the men she loved.
On the wall, the return command flickered, accepted a new instruction from somewhere below, and began — patiently, courteously, in the tower's tireless amber — to count the door open.