Prologue

The Sea’s First Lie

My mother taught me that the ocean returns every debt except the ones it collects in blood.

She said it while teaching me to dive beyond the reef, one hand clamped around the back of my harness and the other pointing toward the blue-black drop where sunlight ended. I was sixteen, furious at being afraid, and determined never to let her know it.

“Count your breaths,” Captain Adisa Baptiste told me through the old brass comms. “Panic makes the sea larger.”

“The sea is already larger.”

Her laugh crackled in my ear. “Then make yourself precise.”

Twelve years later, I still counted.

Four breaths while I checked my regulator. Four while I tested the seal at my wrists. Four while the salvage boat climbed the back of a storm swell and slammed into the trough hard enough to rattle my teeth.

The Hurricane Archipelago spread around us in fragments—green islands, white surf, black cloud. Somewhere beneath that water lay the wreck of the Siren’s Wake and the reason three experienced captains had refused to bring me here.

I had come anyway.

“Last chance to reconsider,” called Tomas from the wheelhouse.

“You said that at the dock.”

“I was younger and more optimistic at the dock.”

Lightning opened the horizon. For an instant, the water ahead became transparent, and I saw something impossible moving beneath the surface: four pale lines running parallel through the deep, long as city streets.

Claw marks.

Then darkness closed over them.

I fastened my helmet and looked at the photograph tied inside my wrist guard. My mother stood on the deck of her final command, one boot on a coil of rope, her grin daring the world to disappoint her. Behind her flew the red-and-gold flag of the Baptiste salvage fleet.

That fleet had gone down one year ago.

The official report blamed a hurricane. I had read every page until the ink softened beneath my fingers. Storm surge. Structural failure. Tragic loss of life.

No mention of the salt found crystallized inside the drowned crew’s lungs.

No mention of the crown-shaped fracture cut into my mother’s compass.

No mention of the Abyssal Court.

I stepped onto the dive platform.

A sound rose from beneath the hull.

Not whalesong. Not steel under pressure. A man’s voice, too low to be words, singing through seventy feet of water.

Every grain of salt dried on the deck lifted into the air.

Tomas crossed himself. “Imani.”

The floating salt turned toward me.

Thousands of crystals hung between my body and the sea, bright as stars. They arranged themselves into a crown with four broken points. At its center appeared an eye the color of deep water.

The voice spoke inside my bones.

BRING BACK WHAT SHE STOLE.

“My mother stole nothing.”

The eye narrowed.

Every instrument on the boat failed at once.

The engine died. The compass needle spun. A wave rose without wind, a vertical wall of black water curling over the stern. Tomas shouted, but the sound vanished beneath a sudden pressure in my ears.

I grabbed the rail.

In the heart of the wave stood a man.

He was impossibly tall, bare-chested beneath a mantle of translucent scales, with salt-white scars crossing brown skin. Wet black hair swept from a face made severe by grief. A crown of jagged crystal hovered above his head without touching it.

He looked less like a king than a sentence waiting to be carried out.

His gaze dropped to the photograph inside my wrist guard.

For the first time, his expression broke.

“Adisa’s daughter,” he said.

“You knew her.”

“She broke the dawn.”

The wave crashed.

Cold swallowed me. My tether snapped taut, then tore free. I spun through green darkness, battered by debris, unable to find the surface. Training narrowed the chaos into facts. Regulator secure. Air supply eighty percent. Left shoulder bruised. Current east by southeast.

Count your breaths.

One.

The pressure changed.

Two.

A hand closed around my waist.

Three.

The man from the wave pulled me against him. Underwater, his eyes were not human. Silver rings moved through the irises like ripples spreading from a dropped stone. He touched two fingers to the side of my helmet.

His voice entered cleanly through the glass.

“If you open that wreck, the storm will know your name.”

I drove my dive knife toward his ribs.

He caught my wrist with insulting ease.

“Good,” he murmured. “You have her temper.”

I kicked free and fired my emergency lift bag. The inflated bladder dragged me upward. When I broke the surface, the storm had vanished.

Sunrise burned coral and gold across a perfectly calm sea.

The salvage boat floated fifty yards away, engine running, every instrument restored. Tomas hauled me aboard while swearing in three languages. Of the wave, the crown, and the impossible man, there was no sign.

Only a white crystal remained inside my clenched fist.

It was warm as living skin and shaped like the broken point of a crown.

Across its surface, letters formed in wet salt.

CAEL MERCER, KING BELOW THE GALE.

Then a second line appeared.

BEFORE THE NEXT DAWN, ONE OF YOU WILL DROWN.

I closed my hand until the crystal cut my palm.

Blood touched salt.

Far beneath us, something vast opened its eyes.

Three nights later, the Siren’s Wake went down in an unnatural squall.

And I went diving for the king who had warned me away.