Chapter 1: The First Song

Mira Kairen was fairly certain she'd spend her first night aboard the Gray Current retching over the rail, not committing treason against the entire ocean. But life had always preferred handing out the worse of two options.

She stood at the bow, both hands locked on the rail, honestly trying not to think about the rolling deck under her feet, or about the fact that until last week the biggest body of water in her life had been the washtub at the Careth orphanage. The moon gave off just enough light to turn the black water into black glass laced with silver cracks. And the wind — the miserable thing — kept blowing straight into her face, as if it wanted to make sure she'd remember its smell: salt, tar, and something else, deep and cold, that Mira couldn't put a name to.

Three days ago she'd been nobody — an orphan with no surname to speak of, if you didn't count the one a nurse at the orphanage had given her because "Kairen" sounded sturdier than "foundling number twelve." Three days ago she'd been mopping floors for gruel, dreaming of the sea the way only someone who's never seen it can dream. Now the sea was right there beneath her, vast and indifferent, and Mira was starting to suspect it had no intention of returning her affection.

"Don't stare at it like that," Tobb muttered beside her — the cabin boy, all of fourteen, only two years younger than Mira herself, though he carried himself like a grizzled old salt who'd seen more of the world than any landlocked orphan ever would. "It likes being stared at. Starts showing off."

"The sea isn't a girl at a dance, Tobb."

"You can't swim, and you're still arguing with the ocean."

He had a point about the swimming, which made it worse. In three days aboard, Mira had learned two unflattering facts about herself: that she got miserably seasick in the first hours of rough weather, and that nobody had ever taught her to swim, because there'd been no sea at the orphanage and even less inclination among the caretakers to invest time in a child unlikely to survive to a respectable adulthood anyway. Both facts now seemed especially well-suited to someone who'd volunteered for a merchant ship.

She turned away from Tobb and glared at the water with doubled stubbornness — just to prove she wasn't afraid. Not of the sea, not of the rolling deck, not of whatever might be lurking out there in the dark past the rail. That was exactly when she did something stupid.

She hummed.

Not a whole song — just three notes, a scrap of a lullaby she'd either invented herself at age six or heard from someone she couldn't remember. The tune had lived in her so long she'd stopped wondering where it came from; she just hummed it when she was anxious, when she was lonely, when the nurse blew out the candle and left the room in darkness. Three notes, quiet, under her breath, just to stop hearing the creak of the rigging and the slap of waves against the hull.

The water stopped slapping.

At first Mira decided she'd imagined it — just a lull, a trick of the wind. Then she noticed the rigging had gone quiet too, as if the ship itself were holding its breath along with her. Even the sails overhead, which a minute ago had been snapping in the wind with their usual annoying persistence, now hung motionless, as if some invisible hand had caught the edges and was holding them still. And then the water around the Gray Current, as far as the eye could see, began to glow.

Not a flash — slowly, from below, as if someone down in the depths were lighting a thousand tiny lanterns one by one. Pale green light spread across the surface of the now dead-calm water in concentric rings from the ship's hull, growing brighter the farther out it went, because the silence around it had become total and unnatural. Mira watched, transfixed, as the light reached all the way to the horizon, tracing the line where black sky met water that was no longer quite so black.

"Mira," Tobb whispered, and there wasn't a trace of teasing left in his voice. He backed away from the rail as if the glowing water might reach up onto the deck and grab him by the ankle. "Mira, what did you do?"

"Nothing!" She jerked back from the rail so hard she nearly fell. "I just — I was humming. Everyone hums."

"Not after dark. Not at sea." Tobb's voice shook harder than it had any right to for a boy who, a minute ago, had been bragging about sea monsters twice the size of the ship. "Haven't you heard old Hasso's rule at all?"

She hadn't. She'd spent her whole life in that orphanage until last week and knew about as much of sailors' superstitions as she knew about court etiquette — which was to say nothing, except that such things surely existed and surely could get her killed.

Boots pounded across the deck — heavy, certain, recognizable with a single stomp of the sole. Captain Darnveil appeared at the bow faster than Mira could invent a single plausible explanation for the glowing ocean at her back. Behind him, disheveled and clutching a lantern, hurried Boatswain Gretta, and behind her two more sailors whose names Mira hadn't yet learned but whose faces had gone whiter than canvas.

The captain was a tall man with a streak of gray in his black beard, and eyes the same color as the water around the ship — only without the glow, just dark gray, tired, and very, very watchful. He looked at the water. Then at Mira. Then back at the water, and the second glance seemed to cost him more than the first.

"Everyone below," he said, without raising his voice, and yet the whole crew, spilled out on deck by the unnatural silence, obeyed as if he'd bellowed at the top of his lungs. Sailors jostled at the hatches; someone muttered prayers, someone else crossed themselves toward all four directions at once, as if unsure which way the danger would come from. "Now. Everyone except the cabin boy and the girl."

When the deck had emptied, the captain finally turned to face Mira fully. Gretta stood a little apart, arms crossed over her chest, her gaze flicking between the captain's face and the glowing water with equal alarm.

"How did you end up on this ship?"

"Boatswain Gretta said she needed extra hands and that I didn't ask stupid questions," Mira answered honestly, trying to keep her voice from shaking as visibly as Tobb's had. "Seems she was wrong about the questions part."

Something twitched at the corner of the captain's mouth — not a smile, but a distant relative of one.

"What did you do to the water?"

"I don't know," Mira said, and it was the plain truth. "I hummed three notes. Just to stop thinking about the seasickness. Is that against some law?"

"Worse," said Captain Darnveil, watching the glowing rings slowly, reluctantly begin to fade at the far edge nearest the ship. The light retreated as unhurriedly as it had arrived, leaving the water calmer than the wind warranted — almost unnaturally calm, if you looked closely. "It's against the sea."

He didn't explain any further — just issued a few more orders in a grim voice, sent Tobb below with a warning that a week of galley duty awaited anyone who breathed a word of what they'd seen, and told Mira to stay within Boatswain Gretta's sight "until we decide what to do with you." The words sounded ominous enough that Mira didn't sleep at all that night, lying in her hammock in the cramped crew's quarters, straining at every creak, waiting to be thrown overboard at dawn. She tried to imagine what it would be like — swimming in the open ocean without a single chance of getting out — and found, oddly, that she feared it less than she should have. As if some part of her was certain the water wouldn't let her drown.

That thought frightened her nearly as much as the sea itself.

Instead of an execution at dawn, she was simply called to scrub the deck, as if nothing had happened. Gretta shoved a mop and bucket into her hands with the same everyday briskness as if last night hadn't occurred at all, and spent the whole day running her through small errands — fetch a line, help with knots, carry water to the cook. But something had happened, and Mira could feel it: in the way some sailors now gave her a wide berth, as if she carried a plague rather than a mop; in the way someone spat over their shoulder whenever she passed; and in the way the sea around the ship stayed strangely calm all the next day, calmer than the wind called for — as if something far below were holding its breath. Listening. Waiting to see if she'd sing again.

By evening, scraping old tar off the planks at the stern, Mira caught herself watching the horizon out of the corner of her eye more often than she watched her own work. It felt like the water was watching back.