Cassian opened his hand again.
The key lay across his palm, too heavy for its size. Heat had blistered the black enamel around the Vey crest. One corner was bent, but the contact teeth remained intact beneath a skin of dried blood.
He looked at Mara. "I don't know."
Her gaze stayed on him, steady despite the engine vibration shivering through the deck.
"That answer must be a novel experience for you," she said.
A white beam swept across the bonded-storage wall behind them.
Nessa swore and shoved the throttle forward. The Mercy Bell's launch wake rolled under the salvage skiff, lifting them hard enough to knock the evidence cylinder against Mara's ribs. She caught it with both arms and crouched behind the wheel housing.
"Questions later," Nessa called. "Drowning now."
Two Breakwater pursuit boats cleared the pier, low black hulls throwing silver water. No running lamps. Their search beams cut over the pilings and the stacked containers beyond.
Cassian closed his fist around the key. "East channel."
"Closed by a storm boom."
"The boom doesn't reach the bottom."
Nessa glanced at him. "My boat generally prefers the top of the water."
"Ballast tanks. Flood them."
"And become a submarine?"
"For twenty seconds."
"You Veys make terrible invitations."
A loudspeaker cracked behind them. "Salvage vessel, reduce speed and prepare to be boarded."
Nessa reached for the ballast controls.
Mara rose enough to look over the stern. Wind tore hair loose from her braid and laid it across her mouth. She pulled it free without taking her eyes from the pursuit boats.
"They are separating," she said. "One is cutting toward the east channel."
Cassian watched the nearer search beam swing ahead of them. The pilot knew the harbor and had guessed Nessa's route. Breakwater training favored containment over chase: close exits, narrow choices, collect survivors when they ran out of water.
Rusk's training.
"Not the east channel," Cassian said. "Take us under the coal conveyor."
Nessa stared at the black framework stretching from Pier Eleven to the derelict furnace quay. "That clearance is decorative."
"At low tide."
"It is not low tide."
"Exactly. The patrol cabins won't fit."
"Neither will my mast."
Cassian drew Nessa's rigging knife and crossed to the forward stay.
She bared her teeth. "Cut that and I charge you for it."
"Invoice Ash Vale."
"Broke bastard."
He sawed through the salt-stiff rope. The mast pitched as the stay parted. Nessa released the locking pin, and the whole assembly came down toward him with the speed of an axe.
Mara moved before he could warn her. She dropped the cylinder into the crook of the wheel housing, caught the loose halyard, and wrapped it twice around a deck cleat. The rope snapped tight. The descending mast stopped a handspan above Cassian's shoulder.
For one breath he saw only her knuckles whitening around the line.
Then he ducked, shoved the mast flat, and secured it.
The skiff entered the conveyor's shadow.
Steel beams passed inches above the wheel housing. Rust flakes rattled across the deck. Nessa bent nearly double over the controls, guiding the hull between concrete supports furred with mussels. The engine note sharpened.
Too sharp.
"Temperature," Cassian said.
"I see it."
Steam feathered from the engine hatch. A coolant hose had shaken loose when the mast fell. Cassian reached for it, but Mara was closer. She snatched a deck rag, folded it around the bucking hose, and forced the coupling back onto the pipe.
Hot water soaked through at once.
Her mouth tightened. She did not let go.
Cassian dropped beside her and locked the clamp with the knife hilt. The hose held. Mara pulled her hand away, palm reddened and shining.
Behind them came a metallic crash.
The first pursuit boat had tried the opening. Its cabin roof struck the conveyor beam, tearing off a search lamp. Glass burst over the water. The boat slewed broadside, blocking the second vessel.
Nessa laughed once, breathless and vicious. "Blackwater Authority. Protecting the harbor from architecture."
The skiff cleared the furnace quay and entered a channel too narrow for the patrols to turn into at speed. Nessa killed the deck lights. Fog took them.
Cassian remained crouched beside Mara.
"Your hand."
"Still attached."
"An encouraging start."
He took her wrist. She could have pulled away. She did not.
The burn crossed the heel of her palm where the wet rag had failed. No blistering yet. He poured clean water over it from the emergency bottle, slowly, keeping her hand above the deck so the runoff would not carry grease back across the skin.
Mara watched his face rather than the injury.
"You said you didn't know," she murmured.
"I don't."
"You recognized the key."
"I recognized the class."
"There are classes of master access?"
"There are classes of everything in this port. Mostly to ensure the wrong people wait outside doors."
Her fingers flexed once in his grip.
"And which class did Councilman Pell carry into the hall where my father died?"
Cassian wrapped her palm in dry gauze from the deck kit. He made the turns even, firm without pressing the burn. It was easier to look at his work than at her.
"Executive root authority," he said. "It could open any Vey-controlled gate connected to the old security grid."
"How many exist?"
"Officially? Nine."
"And unofficially?"
"That's the useful question."
"It was not praise."
"I didn't mistake it for any."
Nessa steered them between the rotting pilings beneath an abandoned net loft. "If the married couple are done comparing wounds, I need help hiding evidence of several maritime offenses."
Mara withdrew her hand. The neat white bandage looked too clean against the grime on her coat.
Cassian could still feel the tendons of her wrist beneath his fingers. What stayed with him was not that she had saved the mast from breaking his neck. It was the way she had held the scalding hose after the heat reached her skin, because releasing it would have stopped the boat.
He understood that kind of mistake too well.
They tied up beneath the loft, where torn nets hung like curtains around the skiff. Nessa set a battery lantern on an overturned bait crate. Its weak yellow light found old floats, damp rope, and the pale cylinder across Mara's knees.
Mara held out her uninjured hand.
"The key."
Cassian did not move.
"If you intend to conceal it," she said, "choose a better moment. I am tired enough to become impolite."
"You were polite before?"
"Pain has affected your judgment."
Nessa crouched beside a tool chest. "Give her the bloody thing, Ash. She'll audit your skeleton if you keep annoying her."
He placed the key in Mara's palm.
She inspected both faces beneath the lantern. "No serial."
"Not on the casing."
Cassian took a narrow screwdriver from Nessa's chest and worked it into the seam beneath the damaged crest.
Nessa slapped his wrist. "Ask before rummaging through a woman's tools."
"May I use the screwdriver already in my hand?"
"No, but your manners have improved."
The casing resisted. He warmed the metal over the lantern chimney, then twisted. The scorched enamel cracked. Mara leaned closer as the rear plate lifted away, exposing a ceramic wafer threaded with fine copper lines.
"That can identify it?" she asked.
"The pattern is the identification. The casing is ceremony."
"Naturally."
Nessa produced a salvage reader from the bottom of her chest, an old unit with a cracked screen and two contact leads. "I use it for ignition wafers. Before you ask, everything underwater eventually becomes salvage."
Cassian connected the leads.
The reader blinked, failed, then displayed a row of broken characters.
Mara shifted nearer. Her shoulder touched his. She smelled of salt, hot metal, and the medicinal wash from the deck kit.
"The third group repeats," she said.
"It's a checksum."
"No. The checksum is the last group. The third is an account structure. Four digits, divider, two digits. Vey internal ledgers use the same format."
He looked again.
She was right.
Cassian cleaned one contact with the edge of his shirt and reset the reader. This time the display resolved into six groups. No name. No conventional serial. Just a root code and a geometry mark showing which executive authorization had been used when the wafer was cut.
He read it once.
The harbor pressed against the pilings beneath them with soft, patient knocks.
Nessa's smile disappeared. "That bad?"
Mara did not ask. She had noticed his stillness.
Cassian disconnected the leads, then connected them again. The same code returned.
CV-01.
His initials. His authorization tier.
He remembered the first key issued to him at nineteen, Iona fastening its chain around his neck as though decorating a weapon. He remembered signing the root ledger. He remembered Tobias making him repeat the rule: an executive credential was not a key but a command. Every door that accepted it recorded obedience to the person whose authority had shaped the wafer.
Mara reached past him and turned the reader so she could see.
"C V," she said.
Nessa sat back on her heels. "Please tell me that stands for Cargo Ventilation."
Cassian put the screwdriver down with care.
"The key was cut from my root authority."
Mara's bandaged hand closed around the edge of the crate.
"Could Pell have stolen yours?"
"Mine was around my neck during the attack. Breakwater removed it after they detained me."
"Then this is a copy."
"A duplicate wafer."
"Made where?"
"There are three secured presses capable of cutting executive roots. All inside Vey-controlled property."
Nessa gave a low whistle. "So the dead councilman walked into a secured hall carrying your permission in his pocket."
Cassian watched the letters glow on the cracked screen.
The attack footage had shown doors opening out of sequence. Security shutters withdrawing. A service corridor accepting a command nobody in the control room admitted sending. He had spent every night since measuring his failures in seconds.
Twenty feet from Pell. Four seconds late to the first shot. Seven to the west door.
All that time, the building had believed Cassian Vey was the one asking to be let in.
Mara's voice was quiet.
"Whoever made this did not merely give Pell access."
Her finger touched the glowing code.
"They gave him your name."