The carrier sent them back to Riverworks with a boring question: which pump lot did this come from?
By breakfast Mara had three provenance forms asking versions of the same thing. Tarin, forearm freshly rewrapped, wished the gutterhound had bitten the paperwork instead.
“You wanted clean source marks,” Mara said. “Now everyone else does too.”
Jessa leaned against the doorframe. “Do I get paid for being correct yesterday?”
“No.”
“Cruel trade.”
The municipal clearance attached to the salvage job remained open until sundown. It covered the lower service chambers and the record stations tied to the condemned pump lot. Sealed machinery, infrastructure cards, and the deeper red-marked archive passages remained outside the clearance.
Mara tapped the permit with one nail.
“Read what you can read. Copy what you can copy. Bring back anything the clearance says can be removed. If a card is bolted into a wall, I don’t care if the wall has been abandoned since your grandmother was a child. It stays there.”
“I know.”
“I know you know. I also know you like sentences that begin with technically.”
Jessa pushed off the frame.
“I can hit him if he starts one.”
“That’s why you’re on the rate.”
The entrance they used sat two levels below the lane they had cleared the day before.
Old Riverworks swallowed daylight quickly. The first service stair was dry except for mineral bloom around the bolts. The second sweated cold water through the wall. By the third, every sound had a second life somewhere out in the dark: boot scrape, buckle knock, Jessa’s breath when the passage opened over a flooded chamber.
She stopped at the threshold. Tarin stopped because she had.
The water below them was black except where old instrument glass threw a weak blue-white line across it. A maintenance bridge crossed the chamber thirty feet ahead, missing two sections of rail and one entire deck plate.
Jessa’s jaw tightened.
“We take the service shelf.”
Tarin looked left. The shelf was narrower, higher, and choked with fallen conduit.
“Bridge is faster.”
“Bridge is over deep still water.”
He looked at her then. She stared back.
“You hired field judgment,” she said. “Enjoy owning some.”
“Service shelf.”
“See? Growth.”
They climbed.
Tarin had LATCH-0 wrapped at his belt and THREAD-0 in the satchel. Neither was active. After the gutterhound, his forearm complained whenever he closed his hand hard, but the cut had stayed shallow. The rest of him carried the dull emptied feeling of spent Stamina and Charge without offering a useful number.
The service shelf forced them sideways beneath rusted conduit. Halfway across, a section had pulled away from the wall and hung by an old chain over the chamber.
Jessa tested it with one boot.
“No.”
“I can hold the chain.”
“With your hand?”
“With something less stupid.”
That got him a look, but not a refusal.
Tarin drew LATCH-0, reached up, and caught the wet chain where it passed through a corroded guide ring. The adhesive clause took. For a moment the sagging shelf steadied under Jessa’s weight.
Then black veins rose through the water below.
Not ink spreading on the surface. Something under it. Lines moved toward them with purpose.
Jessa saw them first.
“Off.”
Tarin released LATCH-0. The chain dropped six inches.
A body struck the water beneath them hard enough to slap the underside of the shelf.
The old metal jumped.
Tarin caught conduit with his free hand. Pain flashed under the bandage on his forearm.
A head broke the surface where the blue-white instrument glow ended.
Long. Flat. Too wide through the jaw. Whiskers streamed from it like wet wire. For one second Tarin saw a pale throat and a black eye, then the eel folded backward into the chamber with almost no splash.
Stolen novel; please report.
The veins vanished.
Jessa had gone very still.
“That followed the card.”
“Yes.”
“Say something clever and I will push you off this shelf.”
Tarin wrapped LATCH-0 without activating it again.
“No cards.”
“Acceptable cleverness.”
They crossed the broken section with rope around the conduit and both hands on metal.
The slower route became much slower after that.
They stopped using the instrument lamps where the wiring dipped into standing water. Tarin left THREAD-0 in the satchel even when a low maintenance crawl would have been easier with a visible route constraint behind them. Jessa marked turns with chalk and short cuts of ordinary twine. At one junction she threw a loose coupling down the flooded branch before they crossed the dry one.
It hit three times.
Far below, something heavy moved toward the sound.
They went the other way.
“Inert vibration,” Tarin whispered.
Jessa looked over her shoulder.
“It’s called throwing junk. Delvers have known about it for centuries.”
“Useful tradition.”
“Write a paper.”
The record station was not much of a station anymore.
Its door had swollen in the frame. Jessa used a pry bar from the municipal tool bundle while Tarin leaned into the hinge side with his good shoulder. The door opened on a room that smelled of wet paper, rust, and old mineral dust.
A line on the wall showed where floodwater had reached sometime in the past.
Everything below it had changed color.
The current seep was only ankle-deep, fed by a thin overflow from a cracked ward housing in the next chamber. Pale fragments flaked from the housing’s inner glaze and traveled with the water like scales.
Tarin crouched before touching any of it.
The fragments held a faint, uneven resonance. Not enough to behave like an intact card. More than ordinary stone should have carried.
Jessa followed the trickle with her eyes.
“That stuff comes off the ward?”
“Looks like it.”
“And then goes where?”
The seep crossed the record room, slipped through a broken grate, and joined a mineral channel beyond the wall.
On the concrete beside the grate were old claw scratches.
Not fresh enough to read cleanly. Not distinct enough to belong to any one animal.
Something had also scraped the mineral crust from the edge in short rough arcs.
Jessa crouched beside him.
“Glass dog?”
“Could be.”
“The one from yesterday?”
“No way to know.”
“The scarred one?”
Tarin shook his head.
The scratches proved teeth or claws, nothing more. Ward glaze was shedding into gutterhound territory; that made the channel worth recording, not explaining.
Jessa stood.
“Good. I hate when you answer a scary question with a bigger scary answer.”
“I was going to say we should record the location.”
“That counts as a smaller scary answer.”
They found the pump-lot provenance in the third cabinet, exactly where the municipal index said it would be.
That should have been the end of the job.
The drawer beneath it had jammed half open after the old flood. Tarin pulled once, felt paper resist inside, and stopped before he tore anything.
Jessa wedged the pry bar against the frame.
“Legal?”
He checked the permit.
“Records tied to cleared utility assets. If it’s from this station, yes.”
“Infrastructure?”
“Paper.”
“Congratulations. Your favorite category.”
The drawer came free with a wet sucking noise.
Inside lay a split oilcloth sleeve and a packet of maintenance folios gone soft at the edges.
The top sheet had almost dissolved.
The second still carried a municipal asset serial.
Tarin knew the number.
It matched a relay plate on one of the dead pump housings they had hauled out the day before.
He read the first surviving line.
ASSET CORE 4C-117 — INTAKE HOLD
Below it, in a different hand:
SERVICE IDENTITY RETIRED — CORE RETAINED
Then another date.
REISSUED — SILT WARNING / EAST BYPASS
Another retirement.
Another reissue.
EMERGENCY RELEASE / FLOOD THIRD
Same core serial.
Same continuity mark beside each line.
Tarin stopped breathing for a moment.
Modern certification treated identity changes as provenance breaks unless a recognized replacement path said otherwise. This page did not look like a break. It looked like maintenance.
Not casual maintenance. Not safe maintenance. But routine enough that someone had left boxes for it on a municipal form.
Jessa watched his face.
“Bad?”
“Old.”
“That’s not an answer.”
“I don’t know yet.”
That satisfied her more than a theory would have.
Near the bottom of the sheet, beside the last reissue, someone had drawn a narrow hooked mark in faded violet ink.
Tarin had seen that shape before.
It appeared in the copied seam notes Orris had routed through the Basilica Registry, attached to an alignment step with almost no surviving context. Orris had refused to explain where the notation came from.
Here it sat on a flood-control maintenance record older than Quill Salvage.
Tarin kept his bare finger off the faded mark and checked the permit before touching the folio.
“This one can travel for source verification.”
Jessa handed him two clean inventory boards. “Then give it better protection than your pocket.”
They sandwiched the wet pages flat, recorded the station and asset serial, and wrapped the boards in Tarin’s driest cloth.
The last surviving line on the reverse nearly escaped him.
Not a technical instruction.
A transfer note.
CONTINUITY FOLIOS — ORIGINALS TO ANNEX ARCHIVE / THRESHOLD EIGHT
A route code followed, then a seal number that had been smeared beyond reading.
Jessa read over his shoulder.
“Threshold Eight on our permit?”
“No.”
“Then Threshold Eight can remain mysterious and dry without us.”
A low knock traveled through the wall.
Once.
Twice.
The seep at their boots trembled.
Black veins appeared in the mineral channel beyond the grate.
Neither of them had an active card.
Tarin looked at the old instrument housing on the wall.
Its blue-white glow had brightened.
Legacy current.
Connected water.
Jessa was already moving.
“Paper. Now.”
He took the wrapped boards.
She kicked the manual drain latch beside the doorway.
Nothing happened.
She kicked it again, harder.
The rusted lever dropped.
Water in the room began to fall through a floor throat with a grinding roar.
Something struck the grate from the far side.
Metal bowed inward.
Jessa did not wait to see a face.
She shoved Tarin toward the dry service crawl.
“Move.”
They moved.
No Thread marked the route behind them. No Latch held the bad steps steady. Tarin crawled with one hand around the record boards and the other on cold stone, following Jessa’s chalk marks through the dark.
At the first flooded junction she threw another coupling down the left branch.
The water erupted there.
They went right.
At the broken shelf she did not even look at the bridge.
Rope. Conduit. Hands.
The deep chamber below them stayed black until Tarin’s boot reached the far stair.
Then the ink-veins surfaced fifty feet away, circling under the weak instrument glow.
The eel had not been beaten.
It had simply lost their trail.
Outside, daylight made the wet record look less dramatic and more fragile.
Jessa sat on the low wall while Tarin checked the cloth wrap. Her heel bounced against the stone.
“We are billing Mara for danger rate,” she said.
“She’ll argue.”
“That’s how she’ll know it’s me.”
Tarin glanced back at the Riverworks mouth.
Somewhere below, old ward glaze kept flaking into mineral water. Somewhere deeper than their clearance, an archive still held the originals of whatever the wet folio had only hinted at.
He tightened the cloth around the boards without folding the paper.
“Come on,” Jessa said. “Before you decide the tunnel owes you another answer.”
He followed her uphill with the record between his hands.