Seln shoved Mara through the split gate before the first shrine-man found the ladder mouth.
Cold hit her face hard enough to sting.
Not cellar cold.
Not sea cold.
Old cold. Worked cold. The kind that had been told to stay in one place until it forgot how to be weather.
Mara caught the right side of the opening with her torn arm, nearly lost her footing, and heard Seln above her say, "Do not answer the first voice twice."
Then the old gate started closing.
Stone dragged over stone behind her. The sound had weight in it. Final weight.
Mara turned just enough to see Seln through the narrowing seam.
Smoke-black face. Wrapped hand. Eyes still too clear.
"You coming?" Mara snapped.
"Not cleanly."
That could mean ten things and none of them useful.
"When the tide turns, stand still," Seln said. "If the mark burns cold, you're already wrong."
The opening narrowed to a blade of black.
"Seln."
Something moved above the abbess. A boot. Lantern spill. Men finally reaching the shaft.
Seln bared her teeth in something too sharp to be called a smile.
"Bring the living back."
The gate shut.
Dark took the space where the city had been.
Mara stood still for one ugly breath and let her eyes fail.
No use pretending there was enough light.
The descent below Gate-House Four was not a stair.
It was a shaft cut around a spine of old chain and black stone.
It dropped in loops too wide to be a well and too deliberate to be a cave.
Narrow walks clung to the inner wall in broken sections. Some were wood, dark with old water. Some were bell-metal grates gone green. Some were only iron pegs and hope.
Far below, water moved.
She could hear it touching things that were not riverbank and not harbor wall.
Toma's voice had come from down there.
That was all Mara needed.
She pressed her left hand to the stone and let the shard rest against it.
The route answered at once.
Live descent.
Broken descent.
False drop.
Old keeper line.
And deeper still, a thin pull that made the scar in her chest tighten.
Toma.
Faint.
Ahead.
Mara started down.
The first stretch was bad work rather than impossible work.
She climbed an iron ladder fixed into the shaft wall, then crossed a bent grate where every third slat had peeled away from its nails.
Her arm protested every shift of weight.
The new burn in her palm protested more.
Three linked half-rings sat black in the center of her hand.
When she curled her fingers, they pulled.
When she gripped the rail, they hurt.
When she stepped toward the wrong side of the shaft, they woke.
Not hot.
Cold.
A needle-cold bite under the skin, as if the mark were trying to pull her hand backward by the bones.
Mara stopped on the warped grate and tested it.
One half-step toward the dark left turn ahead.
Cold.
One half-step toward the narrow chain walk hugging the inner wall.
Heat.
Not much.
Enough.
"So that's how we're doing this," she muttered.
Lawful step by lawful step.
The city could not have built a more annoying guide if it had tried.
She took the inner walk.
The shaft widened as she descended. The last clean stonework gave way to older work under it, then older work under that. Harbor masons she knew. Synod repair seams she recognized. Then neither.
The deeper layers had been set by people who expected weight beyond human use.
White pins as thick as wrist bones fixed chain housings into the wall.
Bell-metal hoops big enough to lift carts hung over empty space.
Old service tags, punched in scripts Mara did not know, swung on wire loops eaten half through by salt.
And here and there, jammed into the black stone at careful intervals, narrow cages the size of a man's torso.
Not cells.
Too small.
Witness brackets, maybe.
Or the city had once stored its dead standing up.
Mara did not waste time deciding.
She kept the shard low in her left hand and used the license burn only when the route got too quiet.
That happened sooner than she liked.
The live pull toward Toma faded near the first landing.
Not gone.
Swallowed.
The dark below breathed once, and five new routes appeared where there had been one.
All downward.
All plausible.
All wrong in different ways.
Mara closed her eyes.
One voice in her head sounded like panic.
Take the fastest.
Another sounded like the city.
Take the cleanest. Trust the one that looks designed.
She hated both of them.
She put her burned palm flat against the wall beside the split and held still until the pain settled enough to sort itself.
Cold on the outer stairs.
Cold on the center drop.
Cold on the smooth-cut run with the pretty handrail.
Heat on the ugly chain bridge that looked half-collapsed and wet besides.
"Of course," Mara said.
The true route was the one that looked like a dockworker's grudge.
She crossed the chain bridge sideways, boots feeling for each narrow plank between the links.
Below her, black water slid through the chamber.
Not high.
Not flooding.
Just moving in a circle too patient to be natural.
As she reached the far side, something knocked once down in that water.
Bell on bone.
Mara froze.
Then Toma said, very faint and very fast, "Don't take the next voice."
She spun so hard her arm lit with pain.
"Toma?"
Nothing.
Only water.
Only chain.
Only the old chamber carrying sound where it pleased.
Mara bit down on the next word before it came out.
Do not answer the first voice twice.
That was what Seln had said.
Fine.
Good.
Useful for once.
She moved on.
The descent opened into a long cut chamber where the ceiling had fallen away into darkness too high above to matter. Black water ran along both sides of the walkway. At first she took the pale shapes in the channels for broken stone.
They were not stone.
They were ribs.
Not fresh.
Not clean.
White arcs set into the walls like braces, each one chained down with bell-metal clamps and old law nails hammered through the joints.
Anchor work.
Or failed anchor work.
Mara's scar pulled tight under her shirt.
The shard grew hot in her hand.
The whole chamber felt like standing in the throat of something that had been forced to swallow iron until swallowing became architecture.
This was no worker route.
No hidden prison.
No saint-cellar scaled up.
It was a grave.
Not for people.
For attempts.
For bindings that had gone wrong and been buried under better stone.
The realization should have slowed her.
It sharpened her instead.
If the city had buried this much under Rookfall, then Toma was not being hidden in an accident.
He had been taken through a route made for older crimes than any priest at Fifth Stair would ever dare say aloud.
Something moved on the water to her left.
Not a wave.
A face.
Pale.
Mouth open.
Gone before she could stop herself from seeing it.
Mara kept walking.
Two more steps.
Three.
Then the chamber tide turned.
The sound changed first.
The water did not rise. The rules did.
Every chain in the room tightened with one long metallic breath.
The black channels along the sides began pulling light out of the stone instead of reflecting it.
The walkway under Mara's boots softened, not into mud but into uncertainty, as if each plank wanted permission to become a different shape.
She stopped at once.
Stand still.
The burn in her palm went sharp with heat.
Good.
Still right.
Then the first false voice came.
"Mara," Toma said from directly ahead, close enough to touch. "Quick."
Too close.
Too easy.
The second came from behind her.
"This way."
A man's voice this time. Clerk-trained. Calm. Useful. The sort of voice built to lead frightened people into rooms that locked afterward.
Then the third came from below the walkway itself.
Her own voice.
"I already found him."
Mara's stomach turned.
She wanted to run from all three.
Instead she pressed the branded palm to her chest until the half-rings bit through cloth and skin and forced herself to sort what hurt.
The false voices tugged at her scar.
The true route pulled lower, meaner, and almost straight down through the chamber floor.
Not through the water.
Past it.
The burn in her palm flared toward the right-hand wall.
Mara looked.
There, half-hidden behind one of the chained ribs, a vertical line of iron pegs descended into shadow.
No rail.
No platform.
Just old maintenance descent punched into the wall where ordinary eyes would miss it.
The tide kept turning.
The walkway in front of her bulged once like something breathing under it.
Done.
Enough.
Mara ran for the wall.
One plank softened under her right boot and gave two inches downward. Black water slapped through the gap.
Her torn arm almost failed when she caught the first peg.
The palm mark screamed heat into her bones.
She nearly let go.
Did not.
She went down the iron line fast and ugly.
She scraped her knee, banged her shoulder, and swallowed a curse when rust opened under her weight and one peg twisted out of true.
Above her, the tide chamber answered with a sound like a drowned bell being dragged over teeth.
Below her, the air got colder.
Not empty cold now.
Occupied cold.
A cold full of old metal, old brine, and something dusty enough that it had not seen honest air in generations.
She dropped the last six feet and landed badly on a slope of black stone and crushed shell.
The chamber below was smaller.
Worse.
No water ran here.
It waited.
Pools lay in the floor in shallow oval cuts, each one ringed with chain grooves and nail-holes where something had once been fastened down above it.
Broken bell frames leaned against the wall.
Tags and slips had fused together into dark clumps under the old damp.
Three heavy mooring chains ran from the far end of the room into a central block of white bone driven half into the floor.
Mara went still.
Not because of fear.
Because the pull toward Toma and the pull from the bone block met in the same place.
That should not have happened.
She moved closer anyway.
The shard had stopped whispering route names.
Now it only hummed.
The sound ran through her fingers and teeth together.
Step by step, the details sharpened.
The white block was not one bone.
It was a knot of them.
Worked. Filed. Driven together with black pins and wrapped in chain so old the links had sunk halfway into the surface.
Failed binding.
Or something left behind when a binding broke and the city built over the hole instead of filling it.
At the chain knot's base lay a final line of metal links different from the rest.
Not iron.
Not bell-metal.
White-boned and polished by too much pressure.
One link had turned toward her.
Mara crouched.
Her arm trembled with the motion. Her palm throbbed. Her scar had gone tight enough to make breathing annoying.
Still worth it.
She wiped grime off the link with the heel of her hand.
At first she thought it was scoring.
Wear.
Tool scrape.
Then the shard went sharp in her grip and the line answered her back.
Not a full word.
Not spoken.
Known.
Sorn.
Carved into the white link in a cut too old for any living clerk and too deliberate to be chance.
Mara stared at it.
The city had kept her family poor on purpose.
That she knew.
The city had kept them close to the harbor on purpose.
That she knew too.
This was worse.
This meant the line had not just been managed around the wound.
It had been fastened to it.
Somebody, long before her pay slips and Toma's dock shifts and the sacred lies above, had put the Sorn syllable into the chain holding this grave together.
And from somewhere deeper than the bone block, past the chain and black pools and old failed law, something gave one answering pull on the route to Toma.
Not voice this time.
Invitation.
Or warning.
Mara tightened her grip on the shard and looked into the dark beyond the chain.
Then she saw the next descent waiting under it.