Beneath the Stone

How much weight could a rotten floor carry before it took down the fortress above it?

I leaned over the stone basin in my sea-quarter cell and rinsed the Atlantic brine from my scraped knuckles. The well water stung like lye on open flesh. Cold salt crusted along my collarbone, gritty with sulfur dust from the Iron Reach. My left ribs throbbed every time my lungs expanded, bruised from the impact of Cador's heavy shoulder against the basalt ledge.

I dried my hands on a frayed strip of linen. Across the rough slate table sat my six-ounce lead sounding weight. The metal bore a fresh, flattened gouge along its base. That was where it had struck Cador’s knife wrist.

A human woman did not usually break the bones of a shifter warrior. Not with a fishing lead and five fathoms of braided cod line. Yet Cador was currently chained in the salt-pillar pens below the seawall, awaiting judgment under Kadek's decree.

And I was still breathing.

A sharp rap sounded against the oak planks of my door.

I did not jump. Living among wolves taught you that sudden movements invited teeth. I picked up my brass dividers, sliding them into the leather sheath at my belt.

"Enter," I said.

The door swung inward with a dry creak. Young Branoc stood on the threshold, his posture stiff, holding a wide earthenware bowl and a bundle of dry parchment. He wore a clean wool tunic, his dark hair damp around the temples. His hazel eyes darted from my face to the lead weight on the table, then down to my boots.

"The Alpha sent these," Branoc said. His voice was unusually formal.

"Did he?"

"Lamp oil, sheepskin vellum, and the bitter kelp salve." Branoc stepped inside, setting the bowl on the stone bench by the hearth. The pungent odor of boiled kelp, tallow, and ground saltwort filled the small room. "Old Maura mixed the salve herself. She said to rub it into your ribs before the swelling stiffens."

"Tell Maura I appreciate her charity."

Branoc hesitated, his fingers curling against his wool hem. "It isn't charity, Tressa. You took Cador's footing from under him. The whole lower yard saw the tide take him."

"Cador didn't watch where he stepped," I said, keeping my tone flat. "The shelf was rotten. Any apprentice surveyor could have seen the sulfur veins."

"No one else saw them," Branoc countered quietly. "He outweighed you by eighty pounds. He intended to feed you to the rip current."

"He was clumsy."

"He was fast," the boy insisted. He glanced toward the corridor, lowering his pitch. "The pack is talking. Some say you used mainland witchcraft. Some say the Alpha cast a blood mark on your lead line."

I let out a short, dry breath that tugged painfully at my bruised side. Witchcraft? No. Just simple fluid mechanics and three hundred years of coastal hydrography. But on an island where problems were solved with jaws, basic arithmetic probably looked like sorcery.

"Let them talk," I said. "What else did Kadek say?"

"He is inspecting the southern storm gates with Marek," Branoc said, shifting his weight. "He said you have until dusk to finish the composite survey of the sub-level weir. Then you are to bring the master charts up to his high den."

My pulse ticked in my throat. The high den was the Alpha's private quarters at the crown of Dun Keresek. Outsiders were not invited there. Mainlanders were certainly never permitted past the guard tier.

"Understood," I said.

Branoc lingered at the door for two beats. He looked at the floor, then met my eyes with an earnest nod. "I haven't forgotten the cliff ledge at the Black Reach, Tressa. If Cador's kin come looking for trouble, I have a spear."

"Keep your spear in the armory, Branoc," I told him gently. "I have enough lead weights."

The boy’s mouth twitched with a wry grin before he stepped back into the corridor and pulled the heavy oak door shut behind him.

Silence settled over the room, broken only by the rhythmic crash of the surf against the outer foundations forty feet below.

I did not waste a second.

I stripped off my damp wool vest and smeared a glob of Maura's kelp salve over my side. The paste was cold, greasy, and smelled like dead tide pools, but within seconds a deep, numbing heat seeped through my bruised ribs. The sharp ache dulled to a manageable thrum.

I pulled on a dry tunic, laced my cuffs, and set to work.

I lit the twin oil lamps, placing them on either side of the slate table to eliminate shadows. I wiped the stone slab clean with a dry rag. Then I unrolled the bundle Branoc had delivered: four sheets of heavy, salt-cured sheepskin vellum, scraped smooth and chalked to take charcoal and ink.

Next came my personal tools.

From beneath the loose floorboard under my cot, I retrieved Kellan's wooden field kit. My hands moved with practiced precision. The brass drafting calipers, the bone burnisher, the lead plumb bob, and the small tin containing Kellan's cakes of pressed lampblack ink.

Beside the fresh vellum, I laid out three separate records:

First, my field slate from this morning's survey on the Iron Reach reef, covered in greasy grease-pencil soundings and azimuth bearings.

Second, the rough coastal sketch from last night's gale at Sub-Level Weir 04, marking the submerged drainage mouth and its inward undertow.

Third, the piece of vellum on which I had copied Kellan's hidden datum line—the precise sequence of numbers and hash marks my brother had carved into the window sill of this room three months ago before he vanished.

I sat on the wooden stool, resting my forearms against the cool slate.

Kellan had not carved those coordinates at random. He had been a Senior Surveyor of the Mainland Admiralty. He never wasted a single stroke of the chisel. If he risked his life to leave a datum mark beneath his mattress, it was the baseline for a master chart.

"Let's see what you found, Kellan," I murmured to the empty room.