The workshop smelled different than three days ago — less turpentine, more metal. The sharp-and-oil combination of mechanisms recently worked, recently heated.
Leonardo opened the back door before Trent finished the knock sequence. He'd been awake or had come awake recently — hair pressed flat on one side, charcoal smudges on his left wrist, the eyes already moving with that rapid cataloguing speed that never seemed to require warm-up. He looked at the cuts on Trent's forearm and the state of his clothes and said nothing, stepping back to let him in.
Warmth. Lamp-light. The porridge situation from three days ago had been replaced by bread and hard cheese on the drafting table, neither of which had been there when the workshop was first entered, which meant Leonardo had left them out for a guest who hadn't confirmed arrival time. Trent sat down and ate without ceremony while Leonardo moved to the central bench.
The cloth came off what was there with the gesture of someone who has been disciplining an impulse for three days.
The Hidden Blade looked like a different object. Same dimensions, same basic architecture of bracer and housing. But the housing was entirely rebuilt — the original engraving carried over in cleaner, more precise lines, the brass a different shade from fresh fabrication. Through the open housing panel, the release mechanism was unrecognizable: three tension elements instead of two, the catch redesigned at a different angle, the whole assembly somehow both more complex and more elegant than the original.
"No finger," Leonardo said.
Trent looked up from the mechanism.
"The design historically required a sacrifice." Leonardo indicated the assembly with a stylus, hovering rather than touching. "The ring finger, left hand. The mechanism needed a specific biological measurement to solve the deployment tolerance — the old builders found a permanent solution. I found a mechanical one." He set the stylus down with the slight satisfaction of someone who has been annoyed by someone else's imperfect solution and fixed it. "The tolerances are in the spring calibration now. You keep the finger."
Trent picked up the bracer. Strapped it to his left forearm in the sequence Mario had demonstrated in the study — the fit was slightly different from the functional blade Giovanni had used, the housing seated two centimeters higher, the weight redistributed forward. He adjusted it once, then looked at Leonardo.
"Show me the motion."
"Extend the arm slightly. Relax the wrist first — then a precise forward flex. Not forceful. The mechanism reads the motion, not the force."
The flex was small. Barely perceptible to anyone watching the hand. The blade emerged with a controlled click and then nothing — steel clearing the housing in the same moment as the sound, the whole deployment taking less time than a full breath. No warning. No sound after the initial click that would register from more than two feet away.
He stared at it in the lamplight.
[HIDDEN BLADE — FUNCTIONAL — CODEX-UPGRADED BONDING PROCESS: INITIATED PASSIVE EFFECT: +5% SYN FROM CARRIED ITEM INTEGRATION: 32%]
"It's perfect," he said.
Leonardo accepted this with a slight incline of his head — neither dismissing it nor performing modesty about it, which Trent had come to recognize as his natural state regarding work he'd done correctly.
"The arrangement," Trent said. He retracted the blade and extended it again, building the muscle pattern. "I want to formalize it. You receive funding and access to documents — technical, encoded, similar to what was in the housing. In exchange: technical support as needed and your silence about my presence in Florence."
"A patron relationship."
"A working one. Both sides benefit."
Leonardo broke off a piece of bread and ate it without looking at it, which meant he was thinking rather than eating.
"The documents," he said. "There are more of them. Elsewhere."
Not quite a question.
"Several. Not immediately available. Some I know where to find eventually."
"That's a careful answer."
"It's an accurate one." Trent held the blade extended and watched the lamplight catch the brass housing. "I won't tell you I can deliver what I can't yet reach. When I can reach it, I will."
Leonardo set the bread down.
"I'll accept." A pause. "On one condition that I'm not asking you to fulfill now. When the shape of whatever you're actually doing becomes something you can say aloud — not the partial truths about grief and changed priorities, but the actual truth — I want to know it." He met Trent's eyes with the direct, rapid attention of someone who has already decided something. "I've watched people hide things for twenty years. You're better at it than most. But whatever is happening to you is not grief, and I'm not going to pretend I believe it is."
"I know you don't believe it," Trent said.
"I'm not pressing it now. I'm asking you to remember that I asked."
He reached into the drawer of the drafting table, tore three blank pages from a sketchbook, folded them, and held them out.
"For field notes," he said. "A clear mind needs clear records. Your father believed that."
[ALLIANCE FORMALIZED — TECHNICAL ASSET: LEONARDO DA VINCI TRUTH DEBT: REGISTERED — DEFERRED NOTE: THIS DEBT WILL BE CALLED EVENTUALLY. HAVE AN ANSWER READY.]
Trent tucked the pages inside his coat beside the conspiracy documents. Giovanni's tight, precise handwriting on one; three blank pages on the other. The same instinct behind both.
The back door opened on the pre-morning grey. The alley was clear. He checked twice and went through.
Outside Florence he collected the horse from the farmstead south of the Porta Romana, the farmer's wife handing the reins over without a word and accepting the coin the same way, the transaction conducted with the mutual discretion of a well-established arrangement. Then south, then west, into the Tuscan landscape doing its January thing — stripped fields, grey-green hills, winter light that was more presence than warmth.
The blade's weight was a constant new point of awareness against his left forearm. Heavier than nothing. Lighter than expected. Foreign in the way new tools are foreign before use wears them into the hand.
[INTEGRATION: 32% FREERUNNING ROUTES — FLORENCE: 28% NOTE: MONTERIGGIONI TERRITORY — SYNCHRONIZATION POTENTIAL: MODERATE]
The gates were open when he arrived. Left gate stuck as usual. The guard with the white beard leaning on his spear in the afternoon cold.
And in the courtyard, arms crossed, wearing the training gambeson over a shirt that showed the healed rib wound's outline in slight thickening of the fabric, Federico Auditore stood with a wooden practice sword held loosely at his side.
He watched Trent ride in without uncrossing his arms or changing his expression. The unreadable quality of it was its own language, and Trent had been learning to read it.
I waited, it said. I'm still angry. I'm still here.
Both things simultaneously and without contradiction. That was Federico.
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