The first Apple session lasted nine minutes and produced a nosebleed at minute seven.
Leonardo sat at the vault table with a lamp and his sketchbook and the specific watchfulness of a man who had agreed to observe something he found profoundly inadvisable, and he noted the moment Trent's breathing changed, the moment his free hand stopped being still, the moment his eyes went from focused to the wrong kind of unfocused, and he said stop in a voice that cut through whatever the Apple was doing.
Trent removed his hand.
The vault was only the vault.
The blood from his left nostril reached his upper lip before he caught it with his sleeve.
"Seven minutes," Leonardo said. He was writing the number and a series of physical observations in a column headed with the session number. "What did you see."
"Options." Trent pressed the back of his wrist to his nose. "Sequences. What happens if I stand at the left pillar versus the right. What Lorenzo does when the signal sounds versus what he doesn't do." He tried to organize it. "The Apple doesn't show the future. It shows probabilities. It shows the weight of what each choice carries."
"At what degree of resolution."
"High. Uncomfortably high."
"And the projection — the outward projection, the one that other people can see — can you isolate that from the probability cascades?"
"Working on it."
The second session, two days later, lasted eleven minutes. The nosebleed came at nine. The outward projection worked for three minutes before Trent's attention split between sustaining it and managing the probability cascade that ran underneath everything the Apple showed.
Leonardo drew the duration and quality in his sketchbook with the same careful notation he gave to Codex pages.
"You're maintaining two cognitive tasks simultaneously," he said, after. "One is directing the projection. One is filtering the information you don't want. The cognitive load of both is competing for the same—" He searched for the right word. "The same available capacity. Which means you need to make the filtering automatic so the projection has full attention."
"How."
"Repetition. Until the filter is habit rather than effort." He paused. "In the time available."
The third session, on April twenty-second, lasted fourteen minutes. At twelve minutes, Trent established a coherent outward projection — three specific memory-images from Giovanni's ledger, made visible in the air above the Apple's surface, clear enough that Leonardo could read the text without moving his chair. He held it for two minutes before the cascade overwhelmed the filter and he had to break contact.
[ISU INTERFACE — BASIC PROJECTION CONTROL: ACHIEVED SUSTAINABLE DURATION: 4 MINUTES — ESTIMATED WARNING: COGNITIVE LOAD AT MAXIMUM — EXTENDED USE RISKS DISASSOCIATION NOTE: THIS IS THE CEILING WITHOUT FURTHER INTEGRATION NOTE: IT IS ENOUGH. USE IT AS IF IT IS ENOUGH.]
The nosebleed came at thirteen minutes. He had learned to expect it.
Federico had been to the Duomo three times.
Not on the same day — once as a merchant's assistant helping deliver candles to the sacristy (Mario's mercenary network had a contact with the relevant cleaning arrangements), once as a foreign visitor wanting to view the Brunelleschi dome from inside, once as a plainly dressed Florentine attending midday prayers.
He came back to the Monteriggioni study each time with sketches.
"Three positions," he said, spreading them on the map. "Left pillar cluster, thirty feet from the altar. Right side aisle, midway between main entrance and transept. The main entrance itself — wide enough to operate without being immediately visible to guards at the altar." He tapped each position. "Sightlines from the left pillar cluster cover Lorenzo's traditional position and the area identified in Giovanni's documents as Baroncelli's placement. Right side aisle has a clear view to the crossing, which is where the mercenary from Perugia would need to approach Giuliano."
Trent looked at the sketch. Back in January, Federico had argued against waiting for anything — he'd wanted to move against the Pazzi immediately, on pure force and anger. Two months of work later, he was producing detailed architectural scouting reports without being asked, organizing the information in the format the planning table needed.
"Not bad. For a banker's plan." He'd said that about the San Gimignano approach, back in February, and had meant it as a fond insult that acknowledged Trent's way of seeing things while still preferring his own. He hadn't said it this time. He'd just spread the sketches.
"The entrance position is yours," Trent said. "Emergency extraction if everything collapses. You don't engage unless you have to."
Federico looked at him.
"You don't engage unless you have to," Trent said again.
"I heard you the first time." He folded the sketches. "What am I supposed to do while you stand in the middle of a cathedral holding a glowing ball?"
"Watch. Run interference if anyone approaches before the projection completes. Get Lorenzo out if the Pazzi guards move toward him before the plan activates." He paused. "Trust the plan."
"The last time I trusted a plan—" He stopped. "The warehouse worked."
"Yes."
"It also nearly got us killed."
"Yes."
Federico put the folded sketches in his coat. "Left pillar cluster," he said. "You take the right side aisle. I take the entrance. Mario's people cover the exits. Claudia's assets watch from outside."
"Yes."
"Good." He looked at the map for a moment. "What's the contingency if the Apple doesn't produce something visible enough. If it just looks like a man having a fit in the middle of Easter Mass."
Trent had thought about this for four days.
"Then we fight our way to Lorenzo and tell him to his face what the Pazzi have arranged and we live or don't on the basis of whether he believes us in time." He paused. "That's the contingency for everything. If the plan fails, the contingency is the same as if we'd had no plan."
Federico was quiet for a moment.
"Not bad," he said. Flat, without the fond-insult register — just the plain assessment. "For a banker's plan."
Claudia's report came the morning of April twenty-fourth.
The Salviati contact had confirmed what Trent had suspected: the Archbishop of Pisa had sent no correspondence to Lorenzo in the two weeks prior to Easter. Rodrigo Borgia's insulation was complete — nothing was traveling through the clerical channel that could be intercepted and used as a distraction.
Claudia delivered this with the clipped precision of an operative who had tried a thing and was reporting that the thing had not worked, and was already indicating the next option.
"The distraction plan is off the table," she said. "But I have four assets positioned in Florence who will be watching Pazzi household activity from dawn tomorrow. If anything changes — if the operation gets moved, if there are additional participants we haven't identified — I'll have a rider at the Monteriggioni gate within the hour."
"The eastern wall section," Mario said. He was looking at the courtyard. The scaffolding was down now — the stonecutters Claudia had hired three weeks ago had finished the repair, and the section that had been crumbling since before January stood solid and fresh-mortared alongside the older stone. "Finished yesterday."
Claudia looked at it for a moment.
"They did good work," she said, and moved back inside.
Cristina was at the Ponte alle Grazie at the tenth hour of the evening.
She had been in Fiesole for three days the previous week — the family visit, the documented absence. She'd come back to find the Soderini household reduced by one: Manfredo had apparently fallen from his horse on the Fiesole road the previous Thursday, and the family was grieving, and the engagement contract was no longer operative, and the Vespucci family was expressing condolences through the appropriate channels.
She had not asked Trent for details. He had not provided them.
What she had asked for, in the note that had reached the tanner's shop three days ago, was a final meeting before Easter Sunday.
She arrived at the bridge looking like someone who had been composing herself for the last two hours and had arrived at the composition. The cloak, the hood back, the specific posture of a woman who has decided how she's going to hold herself and is holding herself that way.
"You did it cleanly," she said.
"Yes."
"His family thinks it was the horse." A statement, not a question.
"The horse was involved."
She absorbed this. Filed whatever she concluded. Looked at the river.
"Tomorrow," she said.
"Yes."
"And you're going into the Duomo with—" She stopped. She knew the shape of the plan because he'd told her the shape — not the Apple, she didn't know about the Apple, but the intervention, the public evidence, the Medici arrangement. "What are your actual odds."
Trent looked at the water. The Arno moved below in its four-hundred-year way, indifferent, carrying the city's reflection in pieces.
"Better than nothing," he said. "Worse than certain."
"That's not an answer."
"It's the honest answer."
She turned to face him. The lamp from the north bank reached her face at an angle that showed the fear clearly — not panic, not the edge of breaking, but the deep background fear of someone who has committed to a course and is now living in the distance between the commitment and the outcome.
"If you die," she said.
He didn't answer.
"If you die," she said again, "I need you to have known something." She didn't look away. "Not the plan or the mission or the information I gave you. Something else."
"I know," he said.
She kissed him the way people kissed when they understood the mathematics of the situation — not with the warmth of something that expected continuation, but with the weight of something that had decided to be true regardless. Brief. Complete.
When she stepped back, her face was composed again.
"Come back," she said.
"I will."
She crossed the bridge and didn't look back.
Trent stayed at the rail for a moment, in the cold, with the specific awareness of the Apple in its case in the safe house behind him and the Duomo's profile visible against the dark sky across the river, the dome that had been Florence's for thirty years and would continue to be, depending on tomorrow.
He went back to the safe house and reviewed the plan until the lamp guttered.
He did not sleep.
The April dawn came at the angle it always came — east over the Santa Croce district, touching the dome first, the way dawn in Florence always touched the dome first because it was the highest thing, because Brunelleschi had built it to receive exactly that light at exactly that angle in exactly the right season.
The bells of Santa Maria del Fiore rang out across the city for Easter Mass.
Trent listened to them from the safe house roof, where he'd climbed when the pre-dawn preparation was finished and there was nothing left to do except exist in the last minutes before the operation was irrevocable.
The Apple was in his coat. Giovanni's seal was in his coat. The Hidden Blade was on his forearm, Codex-upgraded, Leonardo's work back in February, the first concrete evidence he'd had that the plan might actually work — that the chain of competent people, assembled piece by piece from the wreckage of January, could build something that functioned.
[EASTER SUNDAY — APRIL 26, 1476 INTEGRATION: 88% ALL ASSETS POSITIONED NOTE: THIS IS THE DAY GIOVANNI DIED TRYING TO PREVENT NOTE: YOU ARE HERE NOTE: BEGIN]
The bells were still ringing.
He climbed down from the roof and walked toward the sound.
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