The elevator from the twenty-first floor descended in a silence that Hajin had expected to feel like victory.

It did not. It felt like standing at the foot of a staircase with a heavy box in his arms and discovering that there was no step where he had put his foot.

"She took it," Taewon said beside him. He was holding two paper cups from the lobby café, one in each hand, and he had been holding them in the same position for so long that the coffee had begun to cool. "I want to be sure I have this right. You laid out an entry with a forged vendor, and a girl's initials on it, and she looked at it, and said it was her responsibility."

"She signed the authorization."

"She didn't explain it."

"People who are guilty don't."

"People who are guilty," said Taewon, "usually explain it very quickly." He held out one of the cups. "Americano. I got you the hot one, in case you decide to eat something this week."

Hajin took it. The paper was warm against his palm and he did not drink.

He went over the room again, as one goes over a fall. The fluorescent hum. The line of the entry, nine million six hundred thousand won, that he had read aloud as he had rehearsed it, with the courtesy he had practiced like a scale. He had been so sure of what would come next. She would colour, or stiffen, or raise one of those cool eyebrows. She would say that it was an unfair accusation, or that the figure was a clerical matter, or that she resented being questioned in front of her own staff. He had a counter ready for every one.

She had said: *The responsibility is mine.*

And then, to the old man who had proposed it for the minutes, *Noted*, in that dry flat voice with the weight on the last consonant, and the cold had gone down the back of his neck like a drop of water, and he had sat there with his mouth a little open, like a boy who has run at a wall and passed straight through it.

"The intern," he said, abruptly. "The one at the corner. Did you see her face?"

"I saw it."

"She was terrified."

"She was," said Taewon.

"She was meant to be. That was how I knew it was real. If Ahreum had let her take it, it would have proved what Yurim said, that she gives and withholds as she pleases and does not care who pays." He drank at last, scalding, and welcomed the burn. "Instead she took it herself."

"Yes."

"It's a tactic."

"If you say so."

"It is a tactic, Taewon."

"I said, if you say so." The doors opened onto the lobby with a soft chime, and Taewon stepped out ahead of him with the other coffee, and said over his shoulder, in his mildest voice, "You do know you've been looking at the same spot on the floor for six floors."

The lobby of Seol Tower was a cathedral of pale marble, four storeys high, with a ceiling of frosted glass that turned the grey morning into something like milk. At the long reception desk a pair of attendants in dark uniforms stood nodding at visitors. At the security counter by the revolving doors an older man in a navy jacket sat watching a bank of small screens, and next to him stood a woman in a grey suit with a folder under her arm.

Hajin stopped behind a pillar before he knew he had decided to.

Seol Ahreum had come down from somewhere. She had her hair pinned and her face composed, exactly as she had been upstairs, and nothing in her bearing suggested that she had spent the past hour allowing herself to be flayed. She had stopped at the counter with the air of a woman on her way to somewhere else.

"Mr. Gu."

The old man rose halfway, and she lifted two fingers, and he sat again. "Director Seol. Good morning."

"Did Jiwon sit the exam?"

A slow, creased smile broke over the guard's face. "Last Friday, Director. All five hours."

"And how did she find it?"

"She says the maths was kind. She says the language section made her cry in the toilets." He laughed. "She is waiting for the results now. She is not eating. Her mother is beside herself."

"She will be fine," said Ahreum. "The nervous ones usually are." She shifted the folder to her other arm. "Tell her that the Fund's reading rooms on the sixth floor are open until midnight during results week. If the dormitory is loud."

"Director, she is not a scholarship"

"They are open to anyone who needs a quiet table." Her tone did not change. "Please give your wife my regards."

She inclined her head and walked on, across the marble, toward the lifts. She had not smiled once. She had not touched the old man's arm, or lingered, or made a single gesture that anyone could have called warm. She had simply known the name of a girl he had mentioned, perhaps, once, in passing, in the spring.

Hajin stood behind his pillar with a cup going cold in his hand.

It did not fit. He turned the piece this way and that, and it still did not fit. Yurim had said that she was cold. Yurim had said that she decided in an instant who mattered and who did not, and that the people who did not matter found out within a week. That was the woman he had come to destroy, the one with the clipped voice and the long indifferent gaze. He had no place in his plan for a woman who asked after a guard's daughter's exam.

"Performance," he said under his breath.

"I didn't say anything," said Taewon, who had come up beside him.

"I know."

"I was going to say something."

"I know that too."

He would have forgotten it by afternoon, if the afternoon had let him.

It was a small thing at first. At eleven he went to the executive pantry on fourteen for tea, and the young attendant who poured it, a thin, earnest boy called Jinwoo with a name tag slightly crooked, bowed more deeply than the office required and said, in the rush of a person who has been waiting to tell someone, "Mr. Yoon, forgive me, I wanted to say thank you."

"For what?"

"Not to you, sir. To, ah. I mean, Director Seol asked after my mother's knee. After the operation. She asked how it was healing and whether the physiotherapist was coming on time." He rubbed the back of his neck. "I only mentioned it once, in March, when she passed me in the corridor. I didn't think anyone was listening."

Hajin took the tea.

"I see," he said.

At twelve, crossing to the car park to collect a file he had left in the back seat, he found the Seol family's driver polishing a door handle that did not need polishing. Mr. Kwak was sixty, with iron-grey hair and a way of standing that suggested he had once been a soldier. When he saw Hajin, he straightened, and then, because he was the kind of man who could not keep a thing inside, he said, "You are the one doing the project with the Director, sir? Tell her thank you, if you see her, would you. She moved the Tuesday meeting up an hour so I could make my daughter's recital. I never asked. She just did it, and said nothing."

"I am not sure I'll be seeing her," said Hajin.

"Oh, you'll see her, sir," said Mr. Kwak, comfortably. "She is always there."

The third was at a quarter to one, on the service stair, where a small woman of sixty or so in a lilac cleaner's smock was carrying a bucket in her left hand and holding her right wrist to her chest. She stepped aside to let him pass and bowed as she did so, and as he went by she murmured to nobody, in the dazed, grateful way of someone repeating a story to herself, "She remembered my husband's name. Fourteen years in the building, and she remembered his name."

He went down two more flights before he realized that he had stopped breathing evenly.

"You've gone quiet," said Taewon, falling into step beside him at the bottom. "Is it the coffee?"

"A guard. A pantry boy. A driver. A cleaner."

"What?"

"Nothing."

Taewon was silent for a moment. "You know," he said, in a voice so casual that it could only be deliberate, "you did that thing last month. With the tutoring accounts. For the cleaning staff's children, at this building and the one on Namdaemun. You had the free tier extended to every child on the payroll lists. It cost Maru nothing. You called it a rounding error."

"It was a checkbox."

"I know it was a checkbox."

"I did it in the course of another task. It was convenient."

"You do that," said Taewon, "a lot." He did not elaborate.

At ten past one, his phone buzzed in his breast pocket. He drew it out.

*Saw the review. Wow. She's already cleaning up. The intern's been moved to eight, and the record's been edited. Efficient, isn't she?* A small pause in the stream of text, then a second line: *Don't let the nice-boss routine fool you. It's the oldest trick in our family. x*

He read it standing in the middle of the service corridor with his thumb hovering over the screen.

The intern had been moved. He had watched it happen himself, an hour earlier, from the glass wall of the fourteenth-floor pantry: a thin girl in plastic hair clips, hugging a cardboard box to her chest, being escorted to the lift by Secretary Min with an air of cautious festivity. She had looked dazed and faintly radiant. She had looked, he had thought at the time, like a person who had been pulled out of water.

And the record had been edited. Of course it had. That was what a clever woman did when she was caught: she accepted the blame in public, and then she scrubbed the trail in private.

It was a reasonable reading. It was exactly the reading Yurim had given it, and it settled in him, smooth and cold and sufficient, like a stone dropped into a well. He should have felt the satisfaction of a theory confirmed.

Instead he found that he was typing, with his thumb, *Where is she now?*

He deleted it before he sent it.

He did not follow her. He told himself so afterwards, with some firmness. He merely happened to be in the basement, at one-thirty, because the car park lift was out of order, and he merely happened to see her ahead of him in the long, low-ceilinged corridor that led to the staff canteen.

She walked quickly and quietly, with a paper pharmacy bag in her left hand. She did not carry a folder. She wore the grey suit and the pinned hair of the morning, but her shoulders had dropped by a few degrees, and her step had the lightness of a woman who believes she is alone.

He stopped at the corner and watched through the round glass of the swing door.

The staff canteen was a bright, noisy place of steel counters and plastic trays, and it was full of people he would never have noticed: cleaners, porters, couriers, men in blue overalls, a table of kitchen girls with their hair netted. At the far end, by the windows, an older woman in a lilac smock sat alone with a bowl of rice she was not eating. It was the woman from the stairs.

Ahreum crossed the room without hesitation. Nobody looked up. She stopped beside the woman's chair and said something too low for him to catch, and the woman started and half rose, and Ahreum put the paper bag into her hands.

"The white ones after meals," he heard, because the door was thin and the room had briefly fallen quiet. "Not before. And the brace is in there as well. You are not to carry the bucket until the wrist is better."

"Director, I can't, it's too"

"It is already taken care of."

"But who"

"No one needs to be told." It was the same level voice she had used with the guard, the voice that offered nothing and gave everything. "Eat your rice, Mrs. Jeon. It is getting cold."

She turned and left by the other door.

He stood with his hand flat on the glass. A clatter of trays went up behind it, and a burst of laughter from the kitchen girls, and somewhere an extractor fan began to whine. The woman in the lilac smock had put down her chopsticks. She was holding the paper bag in both hands against her chest, bent over it, and her shoulders were shaking.

"What do you need, Mr. Yoon?"

He had not heard her come. The corridor was narrow, and a laundry trolley stood parked against one wall, heaped with folded white towels, so that the passage was barely wide enough for two. She had come around the end of it and stopped at an arm's length from him, with the bare fluorescent light falling across her face.

He had been braced for many things, and a close view of her was not one of them.

She was paler than she had been upstairs. The shadows beneath her eyes were more plainly visible, a faint violet like the stain of a bruise, and there was a little crease between her brows that he had not seen before, as of a person who had been holding a single thought very still for a very long time. Her hands hung at her sides. The right thumb moved along the seam of the left cuff once, and stopped.

He did the only thing he knew how to do. He reached for the knife.

"I was curious," he said, pleasantly, "whether the heiress eats in the staff canteen in order to practice charity, or in order to be seen practicing it."

She looked at him.

The corridor hummed. Somewhere behind her a pipe knocked twice and went quiet. The trolley's wheels ticked as the floor settled. She stood in the tube of white light with her face quite still and her dark eyes on his, and he waited for the crack of contempt, the little cold flare of the girl in the cafeteria, any proof at all that she was the person he had come to find.

What he saw instead, for perhaps one half of one second, was something he could not have named. It flickered at the very back of her gaze and was gone, as quickly as a fish turning in deep water. If he had been made to guess, he would have said it looked like hurt. He would have said it looked like someone who had been struck very gently in a place they had not thought to guard.

"Noted," said Seol Ahreum.

The cold went down his neck again, from the nape to the shoulder blade. He felt it settle, and stay.

She stepped around the trolley, close enough that her sleeve brushed his, so that he caught the faint scent of cold tea and printer paper and something else, clean and faintly dry, like the inside of an old book. Then she was past him. He heard her heels on the concrete, even and unhurried, fading toward the service lift, and the soft pneumatic sigh of the doors.

He did not turn.

"It doesn't add up," he said to the empty corridor.

He said it aloud, because aloud it sounded like a conclusion. He stood against the cold tile with his arms folded and went through the evidence, as he did with any problem. A guard. A pantry boy. A driver. A cleaner. A pharmacy bag. A girl in plastic clips. A woman who accepted the blame for something she had not obviously done, and who said *Noted* when she was struck, and who looked, when she thought no one was watching, as if she had been born tired.

Then he went through the other evidence. A cafeteria. A phone. Forty-one seconds. A voice that carried to every corner of a hall. *Pick it up. Nobody here wants to watch this.*

The two lists would not meet.

He turned his phone over in his hand, and Yurim's last line glowed up at him from the screen: *the oldest trick in our family.* It was a good line. It was exactly what a person would say if she had spent ten years watching someone use kindness the way other people use money. She had been right about the vendor. She had been right about the reserve. Why not this?

"She's very good at it," he said. "That's all. She's very good."

"Or she just remembers people's names," said Taewon.

He had come up silently along the corridor with his hands in his pockets, and he was leaning against the opposite wall as though he had been there for some time. His tired, amiable face had no expression on it at all.

"That is the same thing," said Hajin.

"It really isn't."

"Taewon."

"I'm only saying." He pushed himself off the wall. "The lift is working now. I'll pull the car round."

That night, in the kitchen of his apartment, with the lights off and only the glow of the city behind the glass, Hajin did something he had not done in years. He took a notebook from a drawer.

It was an ordinary black one, bought long ago in a stationery shop near the old school. He used it for ideas that were not yet fit for a spreadsheet. Its pages smelled faintly of the damp cardboard of his student days, and in the back was a list of names in a smaller, tighter hand, a ledger of ten years. He did not turn to it. He turned to the first clean page, and clicked his pen, and wrote the date.

Then, under it, without quite deciding to:

*Mr. Gu. Daughter's exam. Reading rooms until midnight.*

*Jinwoo. Mother's knee. March.*

*Mr. Kwak. Meeting moved. Recital.*

*Mrs. Jeon. Husband's name. Fourteen years.*

*Pharmacy bag. Brace. Not before meals.*

*N.D. Moved to eight. Box. Smiling.*

*Took blame. No explanation.*

*Noted. (Boardroom x2. Signing. Review. Corridor.)*

He stopped. He looked at the page. He had not meant to write so much. Eight lines, nine counting the heading, in his own hard upright hand, and each of them in the plain unadorned shorthand he used for facts.

He thought of the other side of the ledger, and of what Yurim would say. *Performance. A trick. Efficient.* He thought of the dull click of a theory confirming itself, and how good it had felt in a restaurant in Samcheong-dong, and how little of that feeling was left.

He thought, unwillingly, of a half second at the back of a woman's gaze.

He closed the notebook and laid his hand flat on the cover, as though it might open on its own. Outside, the city glittered to the river and beyond. Somewhere across it, past the dark rank of the towers, was a hill he had not looked at in two days.

There were more than three lines on the page now. It had begun, he realized, to look less like a list of anomalies than a list of reasons. He did not know yet what they were reasons for. He only knew that he had stopped being able to read them upside down.