The sea is more than water, her elder brethren taught her, warned her, chided her. It is home and harm and hungry, and you should not face it alone. Her siblings were older, ever knowing better, boisterous and boasting braver, but even they worried, scolded and fretted when she swam out too far alone into deep waters.

It will love you, but it will not always be kind, her eldest sibling bit out, snapped to mask their anxiety. There can be no bearings, in the deep-deep down, no anchors to denote where the sky lies.

When her people sleep, they rest wedged into some secure rock or crevice, tails looped around tails so no one is lost while dreaming.

You cannot be a shoal of one, my dearest, my youngest and bravest, the oldest of their shoal had said, when she told her she was planning on taking the rising when the waters warmed. Ascending landward on the tide swell, letting the shimmering scales of her tail split into skin.

She had not used the name Sasha at that time because that was a landward name she chose with care. Her folk gather names like a garland of pearls, to be constantly strung longer through life as age advances them; names for qualities, for momentous events, for hopes and desires. Her first name, gifted by her shoal, was guttural. It starts at the back of her throat, trails off into a susurration through gills. Mer is a difficult language to learn, though not impossible.

Tim tried. There is no one singular language of those who skirt the deepwaters, so he attempts to mimic her dialect. His pronunciation stumbling, he makes tentative sentences with the butchered grammar of fry. Martin’s grammar is even worse, though he picks up the eddies and waves of the sounds easier.

Jon, like most things in life, takes it as a challenge. One day, almost stubborn with nerves, to perform his task to perfection, he pushes out a juvenile approximation of her first name. Clipped and textbook and the stress in the wrong places, but Sasha smiles, showing her sharpest teeth in delight. Instructs him where to hold the hum at the back of his throat, how to roll the third phoneme upwards like an air bubble. Jon repeats it and repeats it, quietly smug and pleased at his achievement, and the sea in her soul rocks fondly at the sight.

She broached landward in the rising two moons after her age of maturation. She was one of a handful to come to shore. A sibling in Brighton who she phones every week, another two in Holyhead. Her first shoal traverses to warmer waters when the season shifts, and she would feel the rock-hollow absence of them if it was not for Tim, inviting her to participate in a hundred-and-one inane activities that keep her from feeling swept out; Jon, with his libraries of questions and intrigues, his quick-silver tongue; Martin, who sometimes swims a little further out from them but who finds her small knick-knacks in charity shops and craft markets and leaves them on her desk for no reason other than he has thought of her.

She makes three necklaces, plain with a strong chain, a single pearl attached. And on a day where her folk traditionally string garlands of seaweed and mangrove roots and colourful plants from coral reefs in a celebration of family –  there is no one word in her language for this idea; it poorly translates into hierarchies like sibling and brethren and elders, but these are not concepts that fit it exactly – she gifts them to the shoal that will anchor her in the depths of the sea, and bestows upon them names. Most Mer names are wishes for quick fins, calm waters, safe shores, and so she wishes these for them in a language they are not quite proficient in yet.

Her landward shoal is smaller than is traditional. But she loves them as treasures of her heart, and thinks she understands what her siblings told her, about anchors.

--

His parents, both harpies from local nests, are perplexed when his wings start coming in.

Must be a colouring from your mum’s side, his dad hums thoughtfully when Tim’s primaries grow in long and shining like struck bronze. He runs a careful finger down the central line of the rachis, and the wing shudders and jumps, the feathers still sensitive, and Tim complains that it’s ticklish. His wings are too small to fly away as his dad dives in, captures him in careful arms, corkscrewing upwards a little off the ground with Tim squirming and squealing and squawking in play, but they flutter and flap nonetheless.

The wing span’s from your dad’s side, no-one from my nest ever went more than five foot, his mother says, rubbing at the dark brown of his downy secondaries. Tim stretches them out wide, eager to boast at their length, the tips of his longest feathers reaching past his arms held out wide.

Danny’s wings are smaller. Magpie like, bold lines of white broken up by blue and black, the same as his parents. Tim’s wings, broader, a colour like beaten brass that tips into gold at the ends, draws attention, but he’s never been embarrassed. His family never treated him differently, so he didn’t dwell on it.

He can fly, though he doesn’t often. After his parents died, and after… after Danny, he moved to London, where there’s tighter airspace regulations and permits involved, so he mostly doesn’t bother. This doesn’t mean never, however. He has learned, while working in the Archives, that from the ground, his wings have enough lift to pick up both Jon and Sasha by at least a foot. He thinks he could probably manage Martin as well, if it wasn’t for the unfortunate fact that Martin is mildly allergic to a whole host of things, including feather dander, meaning he gets a bit watery eyed whenever he gets too close to Tim’s wings, and he’s a sniffing, red-eyed mess come  moulting season.

Anyway, he can always fly when he leaves the city. When it’s been too long since Sasha’s scales touched seawater, she invites him out to the coast. Jon apparently has had enough of the coast to last a lifetime, and Martin gets funny about large bodies of water, so it’s often the two of them. She swims out, the greenish scales of her tail catching the sun-struck water, and he, above, feeling the breeze brush through his cramped wings, follows her wake. When she breaches the surface in a playful arc, he swoops down, trying to catch her at the same time as she tries to splash him.

“You never thought to look into it?” Jon asks. Always brewing with questions. Tim is obligingly holding out one of his wings, and Jon, who takes everything like a project, has books out and webpages up but with no further clue as to why his colouration and span differ so from his parents.

Tim shrugs. “Doesn’t matter really, does it?”

Jon hums, clearly not agreeing, and Sasha rolls her eyes fondly,  and that is the end of that.

-

Marysia had hoped her child would not take after her husband. She’d lit candles and attended masses during her pregnancy, worn the beads of her rosary smooth. Her child had been born on land, miles from shore, and her husband had been a grounded man, who had folded up his pelt on their wedding night for her and swore to wear no other soul than his human one.

But then her husband leaves, the box where he kept his second soul empty, and Martin is eight years old, and he wakes up one morning glassy-eyed and complaining of nausea, his lip bleeding from where his sharpening teeth have ripped the skin, and she knows her prayers were not answered.

It is not unknown, for the second soul of some folk to flourish later. But it is a rough awakening, to have one’s body grow a new skin out of itself, and Martin is off school for over a week, riddled with fever and fervour, constantly parched, crying and sweating out salt-water.

She watches his skin prickle with grey and black fur, blotching with white over his stomach as he coils up under his covers, throws them off only for his limbs to reduce to shivering. His brown eyes have gone black-shot, his cries a mix of language and barks, and Marysia fears she will lose her only child to the sea.

It will be hard for him to fit in, she tells herself. It would be best to choose one, and he has his friends and family and her on land, and who knows where his father is now, and surely it would be cruel, an unnecessary agony for him to endure some other foreign pull away from all he knows.

She does what she thinks is a kindness, though that is neither excuse nor forgiveness. After nine days, his fur has come through, sleek and soft, his whiskers twitching, and she helps him peel it off as one would do clothes, revealing sweat-sheened limbs, his eyes slipped back into brown again. His gaze still distant and feverish, he tries to cuddle into her, and she soothes him while she finishes stripping off his pelt and folding it neatly.

While he sleeps, she burns it in a fire in the back yard.

When he comes back to himself, she lies and tells him that he’s been sick with a bad fever. And he trusts her, and never questions it. He doesn’t understand that she’s burnt a part of him up, scattered the ashes to the winds, but it was for the right reasons. To keep him safe, and happy, and with her.

He grows up human-limbed and cloven-souled, and she never tells him the truth.

--

Sasha floats in an ever-dark, stolen away and hidden. There is a knot, a cage-trap around her legs, which have fused into her tail although there is no water. The sea, far away, like the wail in a conch shell, throbs in her soul as she strains and shouts and snarls in the wrapping of spider’s webs.

The sea is the only thing with her in the dark.

Sound has a particular quality, underwater. She hears it first, an echo that shivers through her, like being thrummed on the backdraft of some shallow wave. And then it is a wash of insistence. A command.

The compulsion uses her names, landward and seaward and it pulls and demands her attention, and she shrieks and cries back, struggling in the depths. She is being called home, up up up to breach the surface, and she cannot help but answer.

There is a crack and the sea splits, and she is choking on cold and dusty air.

“Sasha!” someone is saying. “God, is she – she’s not – ?”

“Get that stuff off her, come on. Sasha. Sash, love, can you hear us?”

A series of thuds as she splutters. A twisting, gnarling screech, and several swear words.

“Jesus!”

“Shit – shit, get her out of the way.”

“Boss, move, give me the – ”

The screech degrades into a glitching, warping scream. There is the multi-layered sound of compressed air, and crackling fire,the woosh and stench of something burning.

In time, she cracks her eyes open to the punch of light. Her tail flaps weakly. Someone is pulling great strands of silk that has clumped like poorly soldered iron around her limbs, making visceral noises of disgust. She’s cold-stream shivering, surrounded by broken wood and chippings.

“Hey, hey, we got you. We got you. You with us, Sash?”

The faint scratch of feathers against her cheek. Furnace-warm arms are holding her.

Jon is kneeling down in front of her. Holding an axe and stinking of smoke, and she knows, she knows, that it was his voice she heard, although she doesn’t yet understand why.

Martin throws a blanket over her as she shivers, her tail shrivelling and bisecting into legs. He has silk in his hair, and his fingers are trembling, but his face is broken with a look of such relief.

“It’s you,” he says, and his hand touches at his throat, at the necklace she made for him. “It’s you. It’s really you.”

It’s Martin in the end that carries her out of the tunnels, tucking the blanket completely around her. He is talking in the scatter-gun way he does when he is anxious, babbling, and she can’t bring herself to listen. He smells of soot and saltwater, and she’s never noticed that before.

She falls asleep, curled up into his hold, drained and shaken, but feeling utterly safe.  

--

Jon is human. Completely, one hundred percent, although Sasha had joked once that way way back there must have been some Spinx in the family. Tim’s long suspected that Martin’s not quite human, no matter how he presents, but that’s Martin’s business, not his. Some folks have lineages that are rare, or mistrusted, or misunderstood, and Tim’s not one to pry.

Jon, though. Human through and through. Which is why he’s so worried.

“I shouldn’t have been able to do that,” Jon says. Martin’s with Sasha, making sure there’s no nasty side effects to her imprisonment in the table. Jon’s had a face on him for a while which means he’s Worrying with a capital W, and it’s taken hours for him to untangle himself into a blustered declaration to the rest of the class, spiked with nerves. “That place, it had her. It shouldn’t have… I don’t know what I did, but I told her to leave, a-and she could. And she shouldn’t have been able to.”

“And you think that you did that?”

“I – I know I did that, Tim, I felt it, o-or. I mean, I felt something!”

“Ok, alright. Alright. Let’s, let’s calm down and look at this logically.”

Jon goes over what he said while they struggled to rescue Sasha from the deep. It was something he said, he’s sure of it, which is why he is sitting cross-legged on the floor of the main archive office space with Tim, his trousers getting dusty and his temper scraping frayed, getting increasingly frustrated when he tries recreating exactly what he did with his voice, going through questions and commands and instructions and inquiries. And while Tim answers, it’s clearly not what Jon’s looking for, and he’s rubbing the hair at the back of his head in the way he does when he’s getting increasingly frustrated and is too bull-headed to walk away.

Then Jon, rolling his eyes and seething in annoyance, asks him a throwaway question, one of many he’s been trying – what’s your favourite colour? (seriously, Jon, that’s what you’re going with?!); What did you do at the weekend? (you know what I did, you and Martin were with me!).

“Why did you join the Magnus Institute?”

They both sit, frozen and horrified as Tim’s mouth opens and his words trip over his tongue in their eagerness to leave his mouth. As his eyes grow wide and water with tears as he cannot stop speaking about Danny, about the Covent Garden circus and Joseph Grimaldi. As Jon sits, ramrod-backed and cannot stop listening, a muscle jumping in his jaw.  His expression wars between frantic and panicking and hungry.

Tim feels wrung out and hollow once he’s finished. Jon’s manic with apologies. It takes both of them a long time to calm down.

“Maybe… maybe you’re a siren or something?” Tim suggests, but Jon is shaking his head.

“It’s this place, Tim. It’s those statements, when I read them. It’s … I – I think they’re doing something to me.”

Tim looks at Jon and the light strikes off his eyes in a way that it shouldn’t on a human.

He touches Jon’s arm.

“We’ll sort this,” he promises. “We got Sasha out, didn’t we? The four of us, we can get to the bottom of this, yeah?”

Jon nods, and gives a small fragile thanks, and that’s human enough for Tim.

--

Marysia told herself she was not a bad mother. That her son was simply a hard child to love, that he had all the worst trappings of his father, his brown eyes perpetually caught with a far-away look that doesn’t know where to place its longing. But even as she sickened, and he sloughed off every facet of himself in a pathetic attempt to please her, she couldn’t find anything but sorrow in her heart to look upon the man grown over familiar in face, a growth that grew deep-set and fungal into contempt.

She almost spat the truth out to him. Once or twice, with the thought that confessing might bring them closer. She wished he’d chosen the sea instead, so she wouldn’t have to look upon her amputated, half-formed child who would always be lost.

But she never did.

And Martin finds out alone, cornered in an unlocked office, his hands dropping the lighter as a thousand eyes open and watch satisfied as they pour his mother’s choices down his throat to choke him.

--

It starts when Martin starts sleeping in archive storage. When Tim watches worms burrow into Jon’s skin at the same time as they latch and gnaw and wriggle under his own. When they get Sasha back, and find Gertrude’s corpse and Jon leaves and gets hurt and hurt and hurt again, and the world around them gets smaller and meaner and there is nothing Tim can do.

He takes to storing food in their desk drawers. Nothing that will go off, or won’t keep. Tins and dried goods and non-perishables. He lines the walls of Martin’s storage room with fire extinguishers of different types, fire blankets, and spare first aid kits bulging with plasters and bandages and antiseptic wipes. He buys blankets and pillows and rope and penknives. He stress-moults constantly, and tucks his feathers out of sight, irritated and embarrassed at the sight of them,  and it occurs to him that nesting is not a healthy way to deal with this.

He wants his family safe. He used to think it was such a small thing to ask for.

He thinks about that when the bomb goes off.

He burns, and he is dying.

His rage and fear burn off into a different fury. That it has come to this, his family so threatened, that all he has to his name is his sorrow and trauma and frustration and vengeance.

Tim wants nothing more than to live. To see them safe. To rail and rage against what seeks to harm them. So he burns and he burns and burns, his wings aflame and his mouth twisted in a scream, and does not die.

They dig him out breathing from the rubble. His skin stained grey with ash and soot.