“He doesn’t,” Cassian said. “You do.”
Mara took the map back from him and folded it along lines already softened by other hands.
“An admirably inexpensive distinction.”
She walked toward Customs House Nine.
The route carried them past dry docks bright with welding arcs and into the older margin of the port, where commerce had retreated but ownership remained. Warehouses leaned into the wind behind chained doors. Rust spread down corrugated walls in long orange tears. Beneath the quay, water struck the flood-channel grilles with the slow patience of a prisoner testing bars.
Cassian kept half a pace behind Mara. It gave him a view past her shoulders and left his right hand free. The lane narrowed between the port wall and a row of condemned weigh stations. No workers. No moving cranes. Too many windows with salt filming the glass.
Mara glanced at a painted warning on the wall.
UNSTABLE SUBSTRUCTURE. AUTHORIZED PERSONNEL ONLY.
“Does that mean anything here?” she asked.
“It means the Authority knows where to send the invoice after the floor collapses.”
“Comforting.”
“The invoice won’t be.”
Customs House Nine stood over the flood channel on pilings blackened by a century of tide. It had once been handsome. Stone lintels, copper roof, arched loading bays. The windows were now plated with iron, and one corner had settled low enough that the gutters ran uphill.
A new electronic reader had been bolted beside the old brass lock.
Cassian stopped at the bottom of the steps.
Mara looked back. “Do you object to doors?”
“I object to new equipment on abandoned buildings.”
She studied the reader. Its face was clean, the screws uncorroded. “Installed within six months.”
“Three.”
“What gives you that figure?”
“The sealant hasn’t yellowed.”
Her eyes moved from the sealant to him. He could feel the question forming and watched her decide not to spend it yet.
She drew the replacement route from her coat. A narrow credential strip had been printed along its edge. When she held it beneath the reader, the device gave a courteous green pulse.
The lock released.
Cassian caught the door before she touched it.
“Behind me.”
“I hired you to discourage murder, Mr. Vale. Not to perform every hinge personally.”
“The hinge has fewer opinions.”
He opened the door six inches.
Cold air slid out, carrying wet stone, old paper and the metallic scent of tidewater. No fresh sweat. No fuel. No tobacco. He eased the gap wider and checked the floor.
A filament ran ankle-high across the entrance.
Mara saw him go still. “Alarm?”
“Maybe.”
He crouched without touching it. The filament disappeared through a drilled hole in the skirting board. Clear polymer, not wire. Too thick for a signal line.
He followed it with his eyes to a steel bracket fixed above the door. A counterweight hung there, holding back the arm of an old fire bell.
“Mechanical warning,” Mara said.
“Anyone inside hears the bell.”
“Anyone outside?”
“The dead are poor witnesses.”
He took a folding knife from his pocket, lifted the filament onto the flat of the blade and stepped over it. Mara followed with measured care, one hand braced against the doorframe. She wore sensible black boots, scuffed at both toes. He had known people raised on the Rise who would have thrown those boots away for looking used. Mara placed hers precisely between rot stains and did not ask him whether the floor would hold.
Inside, the customs hall had been stripped to stone counters and iron cages. Gray daylight entered through narrow gaps around the window plates. Water ticked below them.
The corridor to the records room descended rather than climbed.
“That seems wise,” Mara said.
“Building paper archives below the tide line?”
“Building anything below the tide line in Blackwater.”
They passed inspection booths with their glass smashed inward. Pencil marks remained on one wall, recording heights and dates. Children, Cassian thought at first. Then he saw the numbers beside them were tide levels.
At the stairwell, Mara knelt and touched a damp footprint on the stone.
Cassian had already seen it. Broad work boot, deep heel, toe angled outward.
“Recent,” she said.
“Since last tide.”
“Authority issue?”
“Half the city buys the same boot.”
“You disappoint me. I had hoped footwear solved crimes.”
“It mostly creates them.”
He went down first.
The lower level had been built as a tide chamber before it became storage. Brick vaults opened off a central passage, their doors raised on stone thresholds. Brass pipes ran overhead beside newer cables. At the far end, a red lamp glowed above a bulkhead.
Mara checked the room numbers against her route. “Archive C.”
The marked door stood open.
Cassian raised one hand. She stopped without argument. That obedience unsettled him more than her usual resistance. It meant she had seen something too.
A strip of white paper lay across the threshold, dry despite the sweating brick.
He approached along the wall. The archive beyond held rows of compact shelving mounted on floor tracks. A terminal glowed on a desk. Its screen showed columns of dates, credential numbers and clearance codes.
No person waited inside.
Mara exhaled through her nose. “That paper was placed to show whether the door moved.”
“It moved.”
“By us.”
“No.” Cassian pointed to the lower hinge. A second fragment of the same paper had been crushed beneath it. “Before us.”
Her mouth tightened. She stepped around the threshold marker and went to the terminal.
Cassian checked behind the shelving. Empty. The room had only one entrance, unless the drain grille in the corner concealed a tunnel narrow enough for a child.
Mara did not touch the keyboard at once. She took a slim camera from her satchel and photographed the screen, the cable ports, the dust around the terminal base. Then she removed a pencil and laid it against the edge of the desk.
“What is that for?” he asked.
“Scale.”
“You carry a ruler.”
“The pencil is less threatening to people who dislike auditors.”
“You’ve met people who like auditors?”
“No. That is why I carry both.”
She worked without hurry, recording the machine before using it, preserving the order of every object. Cassian found himself watching her hands. Not because they were delicate. They weren’t. Ink stained the side of her middle finger, and a pale ridge crossed one knuckle. He watched because she gave each action its own full attention. In a city built on men rushing others into mistakes, Mara Quill refused to be hurried.
It was a dangerous quality.
He wanted to stand closer to it.
The terminal accepted the audit credential printed on her route. A menu appeared.
ACCESS HISTORY.
DOCUMENT TRANSFER.
TIDE STORAGE CONTROL.
Mara selected the first option.
A valve struck open somewhere under the floor.
Cassian heard the change before the water came: the deep iron knock, then the rising roar inside the wall.
“Back,” he said.
Water burst through the drain grille.
It hit the nearest shelving unit hard enough to shudder the steel tracks. Black harbor water spread across the floor, carrying weed and white chips of shell.
Mara reached for the terminal cable.
Cassian seized the back of her coat and pulled her onto the raised threshold as the water climbed over his boots.
“Do not tear that,” she snapped.
“It’s trying to drown you.”
“It contains the access history.”
“So do your photographs.”
“Only the visible page.”
The red lamp over the bulkhead began to flash.
TIDE INTAKE OPEN.
Mara twisted out of his grip and vaulted back into the room.
Cassian swore once and followed.
She was not going for the terminal. She went to the wall cabinet beside it and ripped the inspection hammer from its clips.
The water reached her calves.
“Valve housing,” she said.
She pointed with the hammer. A brass pipe ran along the wall into a square iron box. Its manual control wheel had been removed, leaving the spindle exposed.
Cassian understood.
He took the hammer from her, jammed its forked claw across the spindle and leaned his weight into it. Nothing moved.
Mara braced both hands over his, not asking permission. Her shoulder locked beneath his arm. Together they forced the spindle a quarter turn.
The hammer slipped. Its edge opened Cassian’s palm.
Blood slicked the handle.
Mara adjusted her grip without flinching, wrapping her fingers around his wrist instead. “Again.”
The word struck harder than the water.
He planted one boot against the cabinet. She braced against him, all bone, wool and stubborn leverage. The spindle groaned through another turn.
The roar weakened.
They forced it shut by degrees until the pipe gave one final shudder and fell quiet.
Water sloshed around their knees.
Mara released him and caught the terminal as the desk shifted. The screen flickered but held.
“You’re bleeding on the evidence,” she said.
“You’re welcome.”
She tore the clean inner strip from the bottom of her blouse and wrapped his palm. The gesture was quick and competent. Her fingers pressed the cloth into the cut, then knotted it tight enough to hurt.
Cassian looked at the narrow line of bare skin now visible above her waistband and made himself look back at the room.
“Pressure for ten minutes,” she said.
“We may not have ten.”
“Then bleed efficiently.”
The water began draining through the same grille that had admitted it. Somewhere else in the building, a pump coughed to life.
Mara returned to the terminal. Its display had changed. The access-history page now filled the screen.
She went very still.
Cassian stepped beside her.
The first line carried Edrin Quill’s customs credential.
The second did too.
And the third.
The list continued beyond the screen, each entry stamped with the same location: HOUSE NINE, ARCHIVE C.
Mara scrolled.
Every Thursday. Four ten in the morning.
The oldest visible entry came from ten months earlier. The newest was dated the previous night.
Cassian counted the intervals twice, though there was no need.
Mara’s hand remained on the key. The terminal light made the tendons in her wrist stand out.
“Could the record be fabricated?” she asked.
“Yes.”
“Would fabrication require local access?”
“Not necessarily.”
“But the reader upstairs logged an entry.”
“We haven’t checked its memory.”
“Answer the question I asked.”
Cassian looked at the rows of dates. “A credential can be copied.”
“My father’s credential was recovered from his body.”
He said nothing.
She scrolled to the bottom again. Last night. 04:10. Clearance granted. Archive C opened for six minutes and twelve seconds.
Mara took three photographs, then a fourth with the pencil held against the screen. Her movements remained exact. Only after she lowered the camera did Cassian see that she had cracked the pencil between her fingers.
A soft clang sounded above them.
The fire bell at the entrance.
Once.
The filament had broken.
Cassian switched off the terminal display and drew Mara behind the first shelving unit. Water dripped from their coats. His bandaged hand pulsed against the knife grip.
Footsteps crossed the customs hall overhead, slow enough to belong to someone who knew they had nowhere else to go.
Mara leaned near his shoulder, her breath controlled against his wet collar.
From the passage came the green pulse of the lower bulkhead reader accepting a credential.
Then the lock began to turn.