The manuscript was wrong.

Mina Whitmore had known it for three weeks, but she had only admitted it tonight, at eleven-forty-two on a Wednesday, sitting on the floor of her late grandmother's bookshop with the offending pages spread around her like evidence at a very literary crime scene. She had printed it out specifically to read it on paper, convinced that the problem was digital, that screens were the issue, that if she could just hold the words in her hands she would finally understand what was missing.

The words were missing. That was what was missing.

She gathered the pages into a stack and set them on the reading chair beside her, the one with the faded green cushion that Agnes had owned since before Mina was born. The shop was quiet at this hour. It was always quiet at this hour, which was why she had taken to coming here in the evenings after her shift at the university library, letting herself in with the key she had never returned and sitting among the shelves until something clicked or she ran out of tea, whichever came first.

Tonight she had run out of tea two hours ago. Nothing had clicked.

The problem, she knew in the specific way that writers know things they would rather not know, was the ending. She could not write it. She had written twelve different versions and deleted eleven of them, and the twelfth was sitting in the stack beside her and was so aggressively mediocre that she had printed it out not to fix it but to look it in the eye and admit defeat. Her protagonist, a woman who had spent three hundred pages learning to trust another person, arrived at the final chapter and simply stood there. Waiting. As though she, too, was not sure what she was supposed to do next.

Mina rested her head against the bookshelf behind her and looked at the ceiling.

"You and me both," she said, to the protagonist, to herself, to the particular silence that Agnes's bookshop produced at night. It was different from the silence of other buildings. Fuller, somehow. As though the books were not empty but waiting, the way a theater waits before the lights go down.

She had been twenty when Agnes died. Twenty-one when she finished her literature degree at a university that had seemed more interested in her tuition fees than her actual education. Twenty-two now, which felt like an in-between number, a year that existed to be passed through rather than lived in. She had a part-time job shelving books at the university library, which was the kind of irony she might have found funny if she were in a better mood. She had a flat that cost slightly more than she could afford on a part-time salary, which she supplemented with freelance proofreading. She had a best friend named Clara who sent voice messages at eleven in the evening about nothing in particular, long rambling recordings that Mina listened to on the bus and which were, she had come to understand, one of the primary reasons she had not entirely given up on the novel. Clara believed in the novel with the uncomplicated conviction of someone who had not read a single page of it.

She had a half-finished novel that had been half-finished for fourteen months.

And three days ago, a literary agency had contacted her. Not a rejection, which she was used to. A request: they had seen her submission from a year prior, the first fifty pages and a synopsis that she had spent two weeks perfecting, and they wondered if she had completed the manuscript. They would be happy to read the full thing.

She had not replied yet.

She was going to reply on Monday.

She pulled her knees to her chest and looked at the bookshelves around her, at the particular geography of Agnes's collection. Her grandmother had organized them in a system that made perfect sense to Agnes and no one else: not alphabetically, not by genre, but by what she called emotional neighborhood. Books that felt similar lived together regardless of their category. A Victorian ghost story sat beside a contemporary love story because Agnes had decided both were about the terror of being seen. A poetry collection about grief was shelved next to a cookbook because both, she said, were about nourishment.

Mina had thought it was eccentric when she was a child. She understood it now in a way that made her throat feel tight.

She stood up and started tidying, mostly because sitting still felt like giving up. She worked her way along the shelves, straightening spines, pulling out volumes that had been pushed too far back, doing the small maintenance work that the shop no longer needed but that she performed anyway because it gave her hands something to do while her mind turned over the problem of the ending that would not come.

She was on the third shelf from the bottom, in the far corner that Agnes had called the quiet section, when she found it.

It was tucked between a collection of Icelandic folktales and a battered paperback translation of a French novel whose title had been worn off the spine entirely, and it was so unremarkable in appearance that she might have missed it if her hand had not caught its spine in the process of straightening the folktales. A book bound in dark brown leather, smooth with age. No title on the spine. No author. No markings of any kind on the outside.

She pulled it out and opened it to the first page.

Blank. She turned another page. Blank. She fanned the pages with her thumb and found that every single one was empty. Not torn out, not faded, not worn with use. Simply never written in. The pages were the thick, slightly rough kind that suggested quality, paper made to last, and they had a particular smell that she could not quite place, older than the book itself somehow, as though they had been waiting long enough that time had worked its way into the fibers.

A blank book in Agnes's shop was not unusual. Her grandmother had kept dozens of them over the years. But this one felt different in a way that Mina noticed before she could articulate. It had a particular weight, slightly more than its size suggested. And when she held it the leather was warm under her palms, not the ambient warmth of a room but something more specific, the warmth of something that had been recently held by someone else.

She sat down on the floor with it the way she had always sat on the floor when she found a book she was not sure what to do with.

She had been a writer her entire conscious life, which meant that when she encountered a blank page, her instinct was not to leave it blank. She took the pencil she kept tucked behind her ear and opened the book to the first page, and she wrote the sentence that had been sitting at the front of her mind for three weeks, the sentence that was supposed to be the opening line of the ending she could not write.

It was the most natural thing she had ever done and she would not understand why for some time.

The words appeared on the page in her own handwriting, ordinary grey pencil on cream paper. And then the page began to glow.

Not metaphorically. Not the warm-metaphor kind that writers used to describe particularly good prose. The page actually, physically, luminously glowed, a soft gold light emanating from the paper itself, spreading outward from her written sentence toward the edges of the page like something warming from a center point. The warmth she had felt through the cover intensified and moved through her fingers, up her wrist, her arm, her shoulder.

Mina stared at it.

She was a practical person in the way that writers sometimes were, which was to say she believed in the reality of things she had observed and was reluctant to discount experience simply because it contradicted prior expectation. She stared at the glowing page for exactly three seconds, adjusting her understanding of what the world contained.

Then the door opened.

Not the shop door, which was locked. Not any door that had previously existed in Agnes's bookshop. A door that was simply there, between two shelves, where there had been wall a moment before, old wood gone dark with age, glowing at its edges with the same gold as the page. It swung open silently into a darkness that moved, that breathed, that pressed against the lit shop the way water pressed against glass: a darkness that had weight and depth and a smell that reached her across the distance, old paper and rain on stone and something floral she had no name for, and an air pressure that was different from the air inside the shop in a way she felt in her chest before she understood it.

She stood up.

She was aware, with great clarity, that this was a very bad idea. The awareness was complete and she held it for approximately one second, and then the floor of Agnes's bookshop was not under her feet anymore.

The fall was not what she expected. She had expected a drop, a stomach-lurching descent, the kind of fall that ended with impact. Instead she fell sideways, or perhaps through, the direction becoming irrelevant as the light in the doorway expanded to fill everything around her. The sounds of the London street outside the shop disappeared, replaced by a silence so complete it had texture. The temperature changed, not colder but different, as though the air itself was made of different components. The light was wrong, not dark and not bright but something in between that did not correspond to any hour she recognized.

She landed on stone.

Not hard, not gracefully, somewhere in the middle: her palms hit first, then her knees, then she was on all fours on what was unambiguously cobblestone, large irregular blocks of pale grey worn smooth by years she could not begin to count. She stayed like that for a moment, cataloguing: hands unhurt, knees complaining mildly, the stone solid and cold and very real under her palms. She was not dreaming. She had dreamed enough about endings and blank pages to know the texture of her own dreams, and this was not it.

She looked up.

She was in a narrow alley between two buildings of honey-colored stone, both several stories tall, connected above her by a wooden beam from which a painted sign hung: a blue flame on a dark ground. The sky was dark but not the city-dark she knew, not the orange-tinged permanent twilight of London at night, but a proper dark with depth and with stars, stars she could see even through the narrow aperture between the rooflines, bright and close and arranged in patterns she did not recognize.

From somewhere nearby came sounds: voices, the rhythm of a street with people still in it, the precise clip of horse's hooves on stone, a bell in the middle distance with a tone she had never heard before.

Mina sat back on her heels.

She looked at the space behind her where the door had been. Stone wall. Rough-faced, old, with moss growing in the lower joints. Nothing else. The warmth of the passage had already dissipated into the cool night air.

"You are not supposed to be here."

The voice came from her left. She turned.

The man standing at the entrance to the alley was perhaps twenty-four, tall and lean in a coat of deep navy that reached to his knees, a charcoal waistcoat visible beneath it, a white shirt with its collar slightly open. His hair was dark brown and slightly disordered at the front in the particular way of someone who had been outdoors long enough for the wind to have opinions about it. His eyes were the color of sky in the minutes before it decides whether to clear or cloud over, a blue-grey that belonged to neither category fully. He was holding a paper bag from what was evidently a bakery, and he was looking at her with an expression she would spend considerable time trying to classify.

She would eventually settle on: a problem he had not budgeted for.

"You are not supposed to be here," he said again, as though repetition might revise the facts.

Mina got to her feet.

She was, she felt, entitled to take a moment. She was on her knees in an alley in an unfamiliar city, having fallen through a door that should not have existed, in what she was increasingly certain was not England or any adjacent country. The stars were wrong. The stone was wrong. The quality of the air was wrong in a way she was still identifying. She was allowed to stand up slowly.

"Where is here?" she asked, when she was standing.

The man looked at her. The bakery bag crinkled in his grip.

"Bellgrave," he said. "Capital city of Avelune." He said it with the particular flatness of someone who had said it many times and found it less extraordinary with each repetition. "You should not be here."

"You keep saying that."

"Because it keeps being true."

She looked around again, at the lantern hanging at the alley's entrance, a glass sphere containing something that burned gold and steady without any visible flame. At the roofline against the starred sky. At him, with his coat and his careful hands and his expression of a man working through a problem he had hoped to avoid.

"I fell through a door," she said.

"Yes."

"You do not seem surprised."

A pause. One of those reviewed pauses. "No," he said.

That was the second thing she noticed about him. The first had been his hands, which was a strange thing to notice first, but she was a writer and writers noticed strange things first: the way his hand held the bakery bag, careful and controlled, the way the other moved at his side, slightly more deliberate than a natural swing, the hands of someone who handled fragile things for a living and could not entirely turn it off. The second was the pauses, the way he spoke as though each sentence had been cleared by some internal review process before being released, and sometimes that process took longer than expected.

Both observations pointed to the same thing: this was a very careful man. She noted this in the way she noted everything she would need later.

"I need to find a way back," she said.

"Yes." No surprise in that either. "I will help you find lodgings for tonight. Tomorrow we can discuss your situation."

He began walking toward the street, not looking back. She registered that he had not asked her how she had gotten there.

She followed him.

The street opened up around them, wider than the alley, lamplight pooling on the cobblestones at intervals and leaving the spaces between them dark. Buildings of the same honey-colored stone, three and four stories, their upper floors lit with the warm light of habitation. A woman passed them going the other direction, her coat a deep burgundy, her mind clearly elsewhere. A man sat outside a doorway smoking something that smelled of dried flowers.

No cars. No traffic sounds. No electrical hum. The absence of it was louder than she expected.

She fell into step beside Cassian, her shoes not quite right for the cobblestones, and she let the city work on her in the way that new cities did: the specific weight of unfamiliarity, the brain trying to file new sensory data into existing categories and finding the categories insufficient. She was afraid, she supposed, in some background register, but the fear was quiet compared to the curiosity, which was very loud.

"What is your name?" she asked.

He glanced at her. Another pause.

"Cassian," he said. "Cassian Vey."

"Mina Whitmore."

He did not respond to this. But when she said her name, his hand tightened briefly on the bakery bag. A small thing, barely a movement. She catalogued it without comment.

They stopped outside a narrow building three streets from the alley. A sign above the door showed a painted open book, faded at the edges.

"My shop," he said. "Antiquarian books. There is a room upstairs, small but functional. It is available." He said available with a particular neutrality that suggested, to her writer's ear, that the room had been available for a specific reason that he was not going to volunteer. "It is better than the alternative."

"What is the alternative?"

"Nothing," he said, and opened the door.

She went in.

The shop was small and deep, floor-to-ceiling shelving on every wall, and the shelves were full of books the way that Agnes's shop had been full of books: completely, without apology or empty spaces. The similarity caught her somewhere in the chest before she had time to process it. Different stock, different smell, cedar and old leather instead of Agnes's particular vanilla and must, but the density was the same, the sense of being surrounded by inhabited worlds rather than merely adjacent to them.

Cassian moved through the dark shop without turning on lights, navigating by memory, a man who had walked this path thousands of times.

"Second floor," he said. "First door on the left. The window sticks, but the latch works if you lift while you turn."

She stood in the middle of his dark bookshop with her pencil still tucked behind her ear and the leather-bound book in her hands and she looked at the shelves around her and thought about Agnes's handwriting and the door between the shelves and the way his hand had tightened when she said her name.

He knew she was coming, she thought. Or he knew that someone was coming. One of those was true, and she did not yet know which one, and she was going to find out.

She took the stairs.

The room was small, as promised. A bed with a quilt in blue and white, a window with thick curtains, a chest of drawers in dark wood, a lamp on the bedside table that lit when she touched it without any switch she could find. Clean and spare and slightly cold in the way of rooms that had been empty for some time, kept rather than used.

She tried the window. It stuck. She lifted the latch and turned it simultaneously and it gave.

Outside was the cobblestone street, the hanging lanterns, the dark sky with its wrong stars bright above the roofline. Somewhere below, she could hear Cassian moving through the shop, the soft sound of footsteps she was already learning to recognize.

She sat on the edge of the bed and held the leather-bound book and looked at it for a long time.

Her sentence was still there, in pencil, slightly smudged where her palm had met it.

She had written: The ending was always there. She had simply been looking for it in the wrong world.

She had thought, when she wrote it, that it was the opening of the ending she could not find. She was beginning to wonder whether it was something else entirely, whether it was a sentence that described not fiction but fact, and whether Agnes had known that too, and whether that was why the book had been on the shelf.

She thought about Monday. About the agency email, still unanswered in her inbox. About Clara's last voice message, which she had listened to on the bus three days ago: thirty-seven seconds of Clara describing a disagreement she had with her upstairs neighbor about the appropriate time to run a blender, which had made Mina laugh out loud in the quiet of the bus and drawn a look from the man in the seat across the aisle.

She thought about a city she did not know, with stars she did not recognize, and a man with careful hands who had not been surprised to find her in his alley.

She lay back on the bed with the book against her chest and the lamp still on and she looked at the ceiling of the room that had been available, specifically, for reasons she did not yet know.

She fell asleep before she could decide whether she was frightened.

She was, she thought, on the edge of something. The kind of something that would look, in retrospect, like it had always been going to happen. She had read enough books to know what that felt like from the outside.

It felt considerably stranger from the inside.