Neon Halo: Hymns For The Hollow

The censer swung from Sister Vespera's chain, trailing a ribbon of grey smoke that coiled toward the vaulted ceiling. Elara counted the pendulum strokes, the way her mother had taught her to count the swing of a salvage crane. Seven. Eight. Nine. The incense stung her eyes, thick and sweet, carrying the cloying undertone of rendered fat and something chemical beneath.

"Again," Vespera said.

Elara opened her mouth. The Enochian syllables felt like swallowing broken glass in reverse, each consonant dragging against the roof of her mouth, each vowel falling upward into the soft palate. Za-sah-vee-lohm. Keh-nor-eth-peh-lyon. The parasite coiled tighter behind her sternum, and she felt it taste the air through her, curious, amused.

"Better." Vespera set the censer down on the basalt altar. Candlelight caught the silver threading in her wimple, the deep lines bracketing her mouth. "You are holding the throat too tight. The hymn is not a shout. It is a lid placed gently on a boiling pot."

"I wasn't shouting."

"You were bracing. Bracing is a shout the body makes when the mind refuses." Vespera tilted her head. The gesture reminded Elara of a crow examining a beetle, deciding where to strike. "The angel inside you does not fear volume. It fears precision."

The cathedral of the Halo Dominion rose around them in tiers of polished obsidian and moth-eaten velvet. This chamber, the Chamber of Still Voices, sat at the heart of the structure, beneath the great spire that Elara had once seen from the salvage yards of District Nineteen, a black needle pricking the perpetual overcast. Now, from within, the spire's architecture pressed down like a weight on her shoulders. Every surface had been scrubbed to a dull gleam. Every window had been bricked over except for one high clerestory that admitted a single blade of light, falling across the altar where Elara knelt.

Lazarus waited by the sealed door. He stood with his arms crossed, watching the lesson with an expression Elara had learned to read as the particular kind of attention he gave to things that might kill him. He had not spoken since they had descended the eleven flights of stairs from the courtyard, and his silence had a texture to it, the silence of a man calculating exit routes.

Vespera circled behind Elara. Her habit whispered against the flagstones.

"The Hymn of the First Containment was composed during the first schism, when the Archon Seraphiel manifested in the choir of the Third Cathedral and sang the congregation into ash. Thirty-seven voices, snuffed in a single chord." Vespera's hand settled on the crown of Elara's head. The touch was cool, clinical. "The High Oracle of that age did not flee. She listened to the seraph's appetite, the way one listens to a child's breathing in a sickroom. Then she wrote the counter-melody. The child went to sleep. It has slept, in one vessel or another, for four hundred years."

"You make it sound merciful," Elara said.

"Merciful is a word for children and their nurses. The Hymn is a lock. What sleeps behind it does not love us for singing it to rest." Vespera's thumb pressed against Elara's temple, finding the pulse. "Feel the creature. Do not recoil. Acknowledge it."

Elara closed her eyes. The parasite unfurled at the attention, tendrils of cold sensation spreading through her chest, tasting the incense, the candle wax, the iron-rich tang of her own blood. It had no language she could parse, but it had moods. Right now it was patient. Right now it was listening.

"The opening phonemes bind the appetite," Vespera said, withdrawing her hand. "The middle measures bind the will. The closing measures bind the name. You will sing all three in the Enochian reverse register, which means every syllable is pronounced with the tongue pressed against the rear of the mouth and the breath drawn inward. You will feel as though you are swallowing the song. That sensation is correct. You are putting the angel inside the music rather than outside it."

Elara sang. Zah-kree-ah-lohm. Veh-noth-eth-pyre. The syllables tasted of copper and old stone. Behind her sternum, the parasite shivered. Its amusement curdled into something more cautious.

"It heard you," Vespera said softly. "Now it is deciding whether you meant it."

Lazarus shifted his weight. The sound of his boot heel against the flagstone rang flat in the chamber.

"If the hymn is supposed to suppress the appetite," he said, "why does she look like she's trying to hold a door shut in a windstorm?"

Vespera did not turn. "Because that is precisely what she is doing, Master Crowe."

"Then teach her to hold it harder."

"I am teaching her to hold it with finesse, because brute force is what the angel expects. It is what every host before her has attempted, and it is what every host before her has failed to sustain. The muscle tears. The will frays. The door splinters. But a song." Vespera raised one finger. "A song is the only thing the parasite cannot bite through, because a song is not a wall. A song is a current. It carries the creature with it rather than opposing it."

Lazarus's jaw worked. "Pretty theory. Has it held in practice?"

Vespera finally looked at him. Her smile was the small, exact smile of a woman who had buried more men than he had frightened. "I am still alive, Master Crowe. I have contained three seraphim in my tenure, and I have written the closing measures of the Hymn of Quiet Wings. I have been bitten, burned, and hollowed by the process. I am not pretty. I am functional. There is a difference."

The candle nearest the altar guttered. Elara's breath caught. The parasite had grown still inside her, as if it too were listening to the exchange, weighing which of these two posed the greater threat.

She sang the second verse. Lo-phe-nor-eth-shal. Veh-krim-ah-zolon. The Enochian syllables climbed her throat like a ladder, each rung placed beneath the last, and the parasite followed the climb, curious, cautious, tasting each rung for rot.

"There," Vespera murmured. "You felt it. The hesitation."

"I felt it stop listening to you."

Vespera's eyes narrowed a fraction. "That is the same thing, child. When the angel stops listening to the world, it begins listening to the music. That is the hinge. That is where the lock engages."

Elara's knees ached against the basalt. The cold had seeped through the fabric of her borrowed novice's robe, into the scar tissue along her shins, the souvenirs of a hundred salvage runs through the twisted architecture of the lower districts. The incense had thickened until she could taste it on the back of her tongue, sweet and chemical and somehow old, the way the air in the deepest vaults of a crashed spire grew old when no one had walked through it for a century.

"Sing the closing measures," Vespera commanded. "Bind the name."

"What name?"

"The one it is calling itself this hour. Every parasite has a name, though it changes them as a cuttlefish changes color. You will not speak the true name. You will speak the cage you build around it, and the cage must be made of sound."

Elara had heard of the Naming. The heretics in the rust communes spoke of it in whispers around their driftwood fires, the way one speaks of a thing one does not wish to attract. The Dominion taught that the names of the seraphim were forbidden, that to speak them was to invite the attention of the higher choirs. Elara had always suspected that this was a convenient myth, a way of keeping the congregations ignorant of the vocabulary the oracles used to keep their monsters leashed.

She sang. The closing measures fell upward through her, syllables forming a lattice of sound around the cold presence in her chest. Sah-mel-ior-voth. Kren-ah-byol-mesh. The parasite did not resist. It did something worse. It accommodated itself, tucking its edges into the spaces between the notes, and for one sickening moment Elara felt the song and the creature align, two clocks ticking the same second.

Vespera exhaled. The sound was small and satisfied, the breath of a woman who has just fit a key into a lock.

"Enough," Vespera said. "You will damage the instrument if you push further on the first day."

Elara let the song die in her throat. The silence that followed was loud enough to ring. The parasite settled behind her sternum, still and watchful, and she could not tell whether it had been caged or had simply chosen to pretend.

Lazarus pushed off the wall. "How often does she have to sing it?"

"Three times daily, at the turning of the hours. Once at dawn, once at the zenith, once at the close. The rhythm matters more than the volume. The angel inside her is learning the intervals the way a caged bird learns the spacing of its bars. In time, the song becomes the shape of the day, and the day becomes a longer cage."

"And if she misses a measure?"

Vespera was quiet for a moment. The candlelight swayed.

"Then we will know within the hour, Master Crowe. The appetite will return. The angel will begin to sing in its own register, which is the register that unmakes the voices of men. You have heard it once, I think. The night you came to us with the girl on your back, bleeding from every orifice and asking for sanctuary you did not believe in."

Lazarus did not flinch. His expression did not change. But his hands, Elara noticed, had curled into fists at his sides.

"I remember," he said.

"Then you will ensure she does not miss a measure."

The chamber door opened. The sound was a low groan of iron against stone, and the draft that followed carried the smell of machine oil and ozone, the under-breath of the spire's industrial guts. A novice in a grey habit entered, head bowed, carrying a tray of bread and a small clay pot of water. She set the tray on the altar step, glanced once at Elara with eyes the color of skimmed milk, and withdrew without speaking.

Vespera turned back to Elara. "Eat. Rest. Return at the zenith hour and we will continue with the second hymn, the Hymn of Quiet Wings. It is more difficult. It is also more necessary, because it binds the parasite not to a single hour but to a shape, and the shape is the one thing the creature cannot chew through."

Elara reached for the bread. The parasite stirred, interested in the yeast, in the warmth of the crust. She pulled her hand back.

"It will take your food if you let it," Vespera observed. "It will take everything you let it. That is what appetite means. You are not starving the angel, child. You are teaching it the table manners of a host who will not be consumed."

Lazarus moved to stand beside Elara, between her and Vespera. The positioning was not lost on either woman. He offered his hand, and after a moment Elara took it, letting him pull her to her feet. Her knees cracked. The basalt had been colder than she had realized.

"The second hymn," Lazarus said, his voice low enough that only Elara could hear. "What does it bind?"

"Shape," Elara answered. "She said the shape."

"That's not an answer."

"No," Elara agreed. "It isn't."

She took the bread and bit into it. The parasite settled, patient as a cat on a windowsill, and somewhere in the cathedral above them, a bell began to toll the half hour, the iron voice of it rolling through the bricked-over windows like a stone dropped into deep water.

The bread tasted of ash and something faintly sweet, like honey left too long in a closed jar. Elara chewed mechanically, her jaw working even as her attention drifted upward, toward the vaulted ceiling where the bell's last reverberation was still dying in the stones.

Vespera did not move to leave. She remained on her basalt seat, hands folded in her lap, the pale lamps of her eyes fixed on some middle distance that seemed to satisfy her. Patient as the architecture. Patient as the thing inside Elara's chest, which had subsided to a slow, watchful pulse beneath her sternum.

Lazarus ate standing, his back to the nearest wall, his body positioned so that he could see both Vespera and the doorway through which he had entered. He broke his bread into precise quarters and consumed each quarter in three bites, an old soldier's habit, the kind of rationing that lived in the hands long after the necessity had passed. When he had finished, he licked the salt from his thumb and did not speak.

Elara set the heel of the bread down on the bench beside her. The crust had gone soft where it touched the wood. She did not want the rest. The parasite, sated or at least distracted, had loosened its grip on her throat, and she found that she could breathe more easily now, the air moving in and out of her without that faint, dragging resistance, as though her lungs had been wrapped in wet linen for hours and the linen had only just been wrung out.

"The zenith hour," she said, more to herself than to either of them. "How long do I have?"

Vespera stirred. The lamps of her eyes turned, the pale light moving in their sockets without the corresponding movement of her head, and fixed on Elara. "Three hours. Perhaps four. The bell in the upper spire will sound when it is time. You will know the sound, when you hear it. It is not the same bell that marks the hours of the faithful."

"How will I know?"

"You will know," Vespera repeated, and the repetition was not evasion so much as a door being closed very gently. "Rest, child. Your body is a temple under occupation, and the priests have been absent too long. When the bell sounds, you will come to me. You will not need to be shown the way. The hymn will find you."

She rose, and the motion was strange, too fluid for a woman of her evident age, as though the joints of her knees and hips had been oiled with something other than the ordinary lubrication of flesh. Lazarus's hand moved to the knife at his belt, a reflexive tightening of his fingers around the grip, but he did not draw. Vespera did not seem to notice, or if she noticed, she did not regard it.

"The second hymn will require something of you," Vespera said from the threshold. "The first hymn required your voice. The second will require your attention. I would not recommend that you spend the intervening hours in loud company."

Lazarus let out a short breath, a sound that might have been a laugh in another man, in another century. "You heard the lady," he said when Vespera's footsteps had receded down the corridor. "Loud company is off the menu."

"I thought you were loud company," Elara said.

"I'm exceptional." He let go of the knife grip. "Also, I don't count. I've been around too long. I'm furniture."

"You're not furniture."

"No," he agreed, and something moved behind his eyes, a flicker of the thing he carried, the thing he did not name, the thing that had made him what he was. "I'm not furniture. I'm worse than furniture. Furniture doesn't have opinions about what's about to happen to you."

The cathedral settled around them. Somewhere far above, the regular tick of a mechanism, perhaps a clock, perhaps something older, marked out the seconds in a thin, dry percussion. Elara found herself listening to it, the way one listens to a heartbeat in a quiet room, measuring the spaces between.

"Tell me about the second hymn," she said.

Lazarus shook his head. "I don't know the hymns. I never learned them. The Dominion doesn't teach the hymns to the people who enforce the hymns. We're meant to be impressed, not informed."

"But you have suspicions."

"I have suspicions about everything. It's a professional hazard." He sat down on the bench beside her, leaving a careful distance between his shoulder and hers. "She said the hymn binds the parasite to a shape. Shapes can be prisons. Shapes can be leashes. Shapes can be masks. I don't know which one she's building, and I don't like not knowing."

Elara looked down at her hands. The brand-mark on her left wrist, the Mark of the Faithful Consumer, the small sigil that the Dominion pressed into the skin of every child born within the city, glowed faintly in the dimness of the basilica. She had been branded at seven days old, in the Temple of First Breath, by a priest who had smelled of incense and something sharper, something like the chemical tang of a cauterizing iron. She did not remember it. Her mother had told her, later, that she had not cried. That she had simply looked up at the priest with her strange, clear eyes and watched him work, as though she had been waiting for it.

"The shape," she said slowly. "If the parasite has a shape, then the thing inside me has a shape too. Already. It just doesn't know it yet, or I don't know it yet."

"Or both."

"Or both," she agreed.

The basilica's silence was not empty. It was full of the small, persistent noises of a building that believed itself to be alive: the creak of timbers, the slow drip of condensation somewhere in the upper vaults, the faint hum that rose from the floor itself, a vibration so low it was felt more in the bones than heard in the ears. Elara closed her eyes and let the sound wash over her. The parasite listened with her. It had no ears, but it listened.

She thought of the cathedral above them, the megachurch, the place where the Dominion gathered its faithful to hear the Oracles speak. She had been there once, as a child, brought by her mother on the Feast of the First Light, the Dominion's highest holy day. She remembered the size of it, the way the ceiling had soared upward into a darkness that seemed to have no end, and the way the air had tasted, sweet and heavy, as though the building itself was breathing. She remembered the thousands of brand-marks glowing in the dimness like a field of pale flowers, and the way the sound of the congregation's hymn had risen up to meet the dark, and the way she had felt, in that moment, that the dark was answering.

She had been wrong, of course. The dark had not been answering. The dark had been listening.

"Elara." Lazarus's voice was quiet. "Are you sleeping?"

"No." She opened her eyes. "I'm remembering."

"Dangerous pastime."

"I know."

She shifted on the bench, drawing her knees up to her chest, wrapping her arms around them. The parasite moved with her, accommodating the new shape of her body, settling into the curve of her spine the way a cat settles into the crook of an arm. It was less uncomfortable than it had been an hour ago. She was not sure if that was because the creature was growing gentler or because she was growing accustomed.

"Tell me about the Surfaceborn," she said.

Lazarus did not answer for a long moment. When he did, his voice was very flat, very controlled, the voice of a man who had learned to speak about certain things only by speaking about them as though they belonged to someone else. "There's nothing to tell that you don't already know. The Dominion tells the story every year, on the Feast of the Cleansing. The Surfaceborn were sinners. They turned away from the light. They worshipped the old things, the things that lived in the dark before the Halo came. They were purged. The faithful were preserved. The city was saved."

"That's the story the Dominion tells."

"It's the only story there is." He paused. "I was there, Elara. I was one of the ones who did the purging. Whatever else I am, whatever else I've become, I was there. I don't get to have a different story."

The confession sat between them on the bench like a third presence. Elara did not turn to look at him. She understood, without being told, that he had not spoken these words to many people, and that the speaking of them had cost him something that he would not easily get back.

"The Surfaceborn," she said, and kept her voice as level as his. "You think they were innocent."

"I think they were people. I think they were afraid. I think the Dominion gave us an enemy because it needed an enemy, and we gave them what they needed because we were afraid too." He stopped. "I think I am not the person to tell you what they were. I am the person who will tell you that whatever the Dominion says they were, the Dominion is lying. I know that much. I know it because I was the lie's right hand for twenty years, and I know the shape of a lie from the inside."

The brand-mark on Elara's wrist pulsed faintly, a slow rhythmic brightening and dimming that matched the pulse of the parasite in her chest. She looked down at it. The sigil was simple, a circle bisected by a single vertical line, the Dominion's mark, the mark that every citizen of the city wore from their seventh day onward. She had never thought about it, before. It had simply been a part of her, like the shape of her own hand.

Now she looked at it and saw, for the first time, that the mark was not merely a brand. It was a sigil. It meant something. It had been designed to mean something, by someone, for a purpose that the wearers were not meant to understand.

"The brand-marks," she said. "They're not just brands, are they?"

"No," Lazarus said. "They are not."

"They're what's keeping the city running. The Halo. The light. The whole system. The marks are part of the circuit."

"Yes."

"And the parasite. The thing inside me. It's part of the same system."

"Yes."

Elara was quiet for a long time. The basilica breathed around them. The clock in the upper vault ticked its patient, indifferent tick. Somewhere in the cathedral above, a door opened and closed, and footsteps passed, and were gone.

"The second hymn," she said at last. "She said it binds the parasite to a shape. If the brand-marks are part of the circuit, and the parasite is part of the circuit, then the shape it's being bound to is the shape of the brand-mark. The sigil. The Dominion's mark."

Lazarus turned to look at her. In the dim light, his face was all planes and hollows, the topography of a man who had not slept well in a long time. "That's a guess," he said. "A very good guess, probably. But a guess."

"I know."

"And if you're right, then what Vespera is doing is not binding the parasite to a shape. She's binding you to a shape. To the Dominion's shape. To the sigil. She's making the brand-mark a part of you, in a way that goes deeper than skin."

"I know," Elara said again.

The word was very small in the great stone room. The basilica received it, and did not echo it back, and the silence that followed was the silence of a building that had heard a great many small words and had learned not to repeat them.

"Then why are you still here?" Lazarus asked. "The door isn't locked. The way out is the way you came in. I can get you to the surface, if that's what you want. I can get you out of the city, if you can survive the waste. It's not a good life, the waste, but it's a life. It's yours."

Elara looked at him for a long moment. The brand-mark on her wrist pulsed, and the parasite pulsed with it, and the two pulses were not quite synchronized, but they were close, closer than they had been an hour ago, as though the creature inside her was learning the rhythm of the mark, or the mark was learning the rhythm of the creature, or both of them were learning something together that neither of them had known before.

"Because the door is locked," she said. "You know that as well as I do. The parasite is in me. It's part of the circuit. If I run, I take the circuit with me. I take the brand-mark's piece of the Halo with me. The city will notice. The Dominion will come. And they will not come with hymns."

Lazarus nodded slowly. "Then we stay."

"Then we stay," Elara agreed. "And I learn the second hymn. And I find out what shape Vespera is trying to put me in, and I decide whether I am willing to wear it."

"And if you're not?"

She looked down at the brand-mark on her wrist. The pale light of it rose and fell, rose and fell, the slow heartbeat of a city that did not know it was a parasite, that did not know its light was a leash, that did not know the hymns it sang were the songs of its own devouring.

"Then I teach the parasite to eat something other than me," she said. "And I find out what happens when the Halo goes dark."

The basilica was silent. The clock ticked. The bell in the upper spire was silent still, but it would not be silent for long, and when it spoke, the second hymn would begin, and the shape of the world would begin, in some small way, to change.

Lazarus reached out and took her hand. His fingers were cold, and the calluses on his palm caught against her skin, and she did not pull away.

The silence between them stretched thin enough to snap. Lazarus did not release her hand. Elara did not pull away. The brand-mark on her wrist pulsed once, twice, its pale luminescence catching the faint sweat along his knuckles, and somewhere above them, the basilica's clock struck the quarter-hour with a sound like a bone breaking in a dark room.

Then the choir began.

Not the distant murmur that had threaded through the first hymn. Not the subliminal hum that most of the faithful mistook for the breath of God. This was close, too close, rising from the catacomb levels below them in waves of layered voices that climbed the stairs and spilled into the nave like black water finding cracks. A soprano. A tenor. A bass that seemed to come from the floor itself, vibrating up through the flagstones, through the soles of their boots, through the bones of their feet.

Lazarus's hand tightened on hers. "Down," he breathed. Not a question.

They moved. Past the broken pews. Past the overturned offering basins. Down the narrow side aisle toward the vestry door that Elara had spotted during her first panicked survey of the basilica. Behind her, the choir grew louder, more distinct, and she could pick out the words now, Latinate and ancient, the same words that had been carved into the arches over every shrine she had ever passed, the same words the acolytes chanted at every station of the Halo's great wheel of light.

She did not understand the language. She understood the rhythm. The hymn was a summoning, and the summoning was a key, and the key was turning in a lock she could feel in her teeth.

The vestry door was unlocked. It opened onto a narrow stair that dropped into a darkness that smelled of damp stone and old incense and something else, something metallic and sweet, the scent of recent blood poorly cleaned. Lazarus went first. She followed, pulling the door shut behind her, and the hymn above them became a muffled pulse, a heartbeat heard through walls.

The stair spiraled down. Their boots whispered on stone worn smooth by centuries of feet that had climbed toward the light, not descended into the dark. Elara kept one hand on the wall for balance. The brand-mark on her wrist provided just enough glow to see the next three steps, and just enough to blind her when she glanced down at it, which she could not help doing, again and again, like touching a bruise.

The stair ended in a low corridor. Lazarus stopped so abruptly she nearly collided with him. In the faint brand-light, she saw what he had seen: a figure standing at the far end, perfectly still, its robes the deep crimson of a High Oracle, its face hidden by a silver mask shaped like a weeping saint.

"Sister Vespera," Elara said. The name came out steadier than she felt.

The figure tilted its head. When it spoke, the voice was smooth, measured, and very, very old, the voice of a woman who had listened to too many confessions and believed none of them. "Child. You have come further than I expected. The hymn usually calls them back before they reach the lower galleries."

Lazarus's hand dropped to the worn grip of the salvaged blaster at his hip. "Don't," Vespera said, without looking at him. "I am not here to fight. I am here to witness. The Oracle above me wishes to know if the second hymn will take root in the new vessel, or if the root will rot."

Elara's throat was dry. She swallowed, tasting the same ozone she had tasted on Lazarus's skin after his first blackout, the same ozone that had clung to her own mouth after the dream of the second hymn. "You knew I would come down here."

"I knew the hymn would guide you. The hymn knows what it wants. The hymn is older than I am, older than the basilica, older than the city above us. The hymn is the parasite's appetite given voice." Vespera's masked face turned toward the faint glow at Elara's wrist. "And the parasite has chosen well. A salvager who has seen the underside of the Halo's miracles. A heretic who has already tasted the forbidden truth. The ideal soil for a deeper root."

Lazarus took a step forward, placing himself between Elara and the Oracle. His voice was the cold Transatlantic drawl she had first heard in the ruins of a transit station, the voice that had once read out execution orders and now read out the names of the dead to no one. "She is not soil. She is not a vessel. She is the woman who pulled me out of a collapse zone when she had no reason to, and she is the woman who decided, in a room above us, to teach the parasite to eat something other than her. You are not witnessing anything. You are trying to reclaim a piece of property the Dominion considers lost."

Something shifted behind the silver mask. Elara could not read the expression, but she could feel the change in the air, a tightening, the way the air tightened before a storm broke the surface of a still sea.

"You are the enforcer," Vespera said, still not looking at him. "Lazarus Crowe. Formerly of the Ninth Purgation Cohort. I have read your file. I have read the files of every enforcer who ever questioned the necessity of the purges, and they all ended the same way. They questioned. They were silent. They were useful again." A pause, deliberate, surgical. "When did you stop being silent?"

Lazarus did not answer. His hand stayed on the blaster. Elara watched the muscle in his jaw jump, once, the only sign that the words had landed.

"The second hymn," Elara said, cutting through the silence before it could calcify into something that could not be broken. "You put it in my head. You shaped it. You want me to sing it at the consecration of the new shrine in the upper basilica. What happens when I sing it? What does the parasite do? What do you do?"

Vespera was silent for three of Elara's heartbeats. Then, slowly, she raised one hand and lifted the silver mask from her face.

The face beneath was old. Older than Elara had expected, older than any High Oracle she had ever seen permitted to remain in office, the skin papery and mapped with the faint silver tracery of old brand-marks, dozens of them, layered like the rings of a tree, each one a hymn learned, a root taken, a piece of the parasite integrated into flesh and bone. Her eyes were the pale grey of the Halo's own light, and they did not blink.

"I was the first," Vespera said. "The first to take the mark willingly. The first to learn the first hymn. The first to teach the parasite to eat something other than me. I taught it to eat my grief. I taught it to eat my doubt. I taught it to eat my daughter, who died in a surface famine while I was learning to sing." Her voice did not waver. "The parasite is grateful. The parasite gives me what I ask. The parasite has given me one hundred and forty-three years of life, and it will give me one hundred and forty-three more, if I keep feeding it, if I keep singing, if I keep shaping the next vessel, the next root, the next hymn."

Elara's stomach turned. The ozone taste in her mouth thickened. She understood, suddenly, with a clarity that felt like a blade sliding between her ribs, what the second hymn was. It was the same bargain, offered again, with better packaging. Feed the parasite your grief. Feed it your doubt. Feed it someone you love, and in return, it will give you a longer leash, a brighter light, a more beautiful cage.

"And the Surfaceborn," Lazarus said, his voice low and rough. "The purges. The children in the collapse zones. That was the parasite's appetite too."

Vespera's pale eyes moved to him at last. "The parasite does not distinguish between appetites. I taught it to eat my grief. The Dominion taught it to eat the Surfaceborn. Both were efficient. Both were praised. The hymns do not judge the shape of the offering, only that an offering is made." She turned back to Elara. "You can refuse the second hymn. The mark will fade. The parasite will release you. You will live out your short, un-extended life in the ruins above, with this man, with whatever scraps of meaning you can stitch together from the wreckage. Or you can accept. You can learn the hymn. You can sing it at the consecration. And when you sing it, the parasite will show you the shape of the Halo, the real shape, the shape the Elders have hidden for a thousand years. You will see the wheel. You will see the cogs. You will see the thing at the center that the Halo is built to serve."

Elara's mouth opened. No sound came out. Beside her, Lazarus had gone very still, the kind of still she had only seen in him once before, in the transit station ruins, when he had been deciding whether to kill the salvagers who had cornered them or to trust the woman who had offered him a way out.

"And then what?" Lazarus asked, his voice stripped of everything but the question.

Vespera replaced the silver mask. When she spoke again, her voice was smooth once more, the confession folded back beneath the surface like a blade returned to its sheath. "Then she decides. As I decided, one hundred and forty-three years ago. As every vessel decides, when the shape of the truth is finally visible. Some of us sing. Some of us go silent. The parasite does not mind. The parasite is patient. The parasite will outlast every decision we make, because the parasite is the only thing in this city that has never once lied about what it wants."

The brand-mark on Elara's wrist pulsed, slow and steady, in time with the muffled hymn still rising from the catacombs below. She looked down at it. She looked at Lazarus. She looked at the masked figure at the end of the corridor, the first vessel, the oldest root, the woman who had fed the parasite her own daughter and called it grace.

"No," Elara said.

The word fell into the corridor like a stone into still water. Vespera did not move. Lazarus exhaled, a long, slow breath that carried with it the last of the tension that had been holding his shoulders rigid.

"No?" Vespera repeated, the word almost curious.

"I am not your next vessel. I am not your next root. I am not going to learn the second hymn so the parasite can show me the shape of its truth, because I already know the shape of its truth. The truth is that the Halo is a leash. The truth is that the hymns are the songs of its own devouring. The truth is that the Elders have been feeding it the Surfaceborn for a thousand years, and you have been feeding it your own grief, and you have both decided that this is a reasonable exchange." Elara's voice was rough, and fast, and it did not waver. "I am going to walk out of this basilica. I am going to take Lazarus with me. I am going to find the cogs. I am going to find the thing at the center. And I am going to teach the parasite to eat the leash, or I am going to break the wheel, or I am going to die trying, and the parasite can decide for itself which of those outcomes it prefers."

Vespera was silent for a long moment. Then, slowly, she stepped aside, clearing the corridor behind her. "Then walk," she said. "The door at the end opens onto the surface. The surface is where the Surfaceborn died. The surface is where the purges were cleanest. The surface is where the Halo's light does not reach, and the parasite cannot follow, not yet." A pause, and when she spoke again, her voice was softer, almost gentle. "But the hymn is already in you, child. The root is already taking. When you hear the bell ring at dawn, you will feel it rise. And when it rises, you will have to choose again."

Elara took Lazarus's hand. His fingers were cold, and the calluses on his palm caught against her skin, and she did not pull away. They walked past Vespera without looking at her. At the end of the corridor, the door was iron-banded and heavy, and it opened onto a flight of stone steps that climbed toward a sky the color of old lead.

Above them, the bell in the upper spire began to ring. The second hymn rose in Elara's throat, unbidden, a melody she had never learned and could not unlearn, and she felt the brand-mark on her wrist flare once, bright enough to cast a shadow, before the cold air of the surface swallowed the light, and the two of them stepped out into the ruins of a city that had never stopped singing, and began, for the first time, to listen.