By two o'clock in the morning, the lab was empty and the door was locked.

Wade had gone at one. Elias had sent him away without explanation, and the young technician had gone without asking for one, pausing at the double doors with his jacket half on to glance back at the pale figure beside table one. "You sure you don't want company, Doc?" he had said. "It's been a long week." Elias had said no. He had said it gently, and Wade had nodded and gone, and the doors had sighed shut behind him, and the long room had settled into its hum.

Now there was only the rain against the high windows, and the ventilation, and the soft breath of the refrigeration units. The overhead lights were off at the far end and burning white over the center of the room. The body of Warren Kray lay on the steel table beneath them, naked and gray and very still, with a white sheet folded at his waist.

Elias stood at the wash station. Three minutes. He scrubbed his forearms until the skin burned, and dried each finger on a paper towel, and drew on the three layers of gloves one after another. The ritual was slower tonight. His hands had a deliberate, heavy care to them, as if he were dressing for a ceremony whose outcome he already knew.

He did the external examination first, because that was the correct order, and because he needed the routine.

The incision was fourteen centimeters long. It began just below the left mastoid process and ended at the hollow of the throat, cutting the external carotid, the jugular, and a portion of the sternocleidomastoid, and it was entirely clean. The edges were as sharp as a drawn line. There was no tailing at the start, no ragged flourish at the finish. Whoever had made it had done it in a single stroke, with a blade no longer than three inches and no thicker than a pencil, and had done it with the kind of ease that came only from practice. Elias measured the depth. He measured the angle. He took six photographs and made four notes, and then he stood for a long while with the measuring tape in his hand and worked through the geometry.

The cut ran downward from left to right, at a slight incline. That meant the assailant had stood in front of the victim and slightly taller than him. Kray had been five foot ten. The angle of descent, the length of the stroke, the placement of the blade: he did the sum twice in his head, and then a third time on paper, and arrived at the same figure each time.

A hair over six foot two. Give or take an inch.

He wrote it on the pad beside the table. He looked at the number for a moment. Then, slowly, he turned the page over so that he would not have to see it.

The stomach contents gave him the time. A light meal, mostly digested: fish, some wine, a little bread. Consistent with a dinner taken at seven and finished by eight-thirty. Consistent, therefore, with death around nine-forty, which was what the core temperature had suggested at the scene. The numeral V had been cut after death, as the others had, two shallow strokes with a steady hand, pressed just deep enough to mark the skin and no more. There were no defensive wounds. No fingernail damage. No bruising on the wrists or arms.

Kray had stood still. He had stood on that pier under the third lamp, in the rain, and let someone come up close to him and open his throat. There was no other explanation, and it did not make sense, and Elias turned it over and over in his mind until the thought frayed.

At a quarter past three he laid down the tape and sat.

He had found out by accident. That was the thing he never told anyone, because there was no one to tell. He had been twenty-one years old, in the first-year anatomy lab at medical school, working on a cadaver that the students had named Margaret because nobody could bear to call her anything worse. His glove had torn at the thumb. He had not noticed until he rested his hand against her forearm to steady the dissecting tray, and felt the skin, cool and papery and slightly damp, against his own.

Sixty seconds. An old woman, in a narrow bed, in a room that smelled of lavender, dying in her sleep with a window open and a curtain moving. There had been no fear in it. There had only been a long, slow, tender dimming, like a lamp being turned down by a hand that knew how. He had come back to himself on the floor with the professor leaning over him and a circle of white faces overhead, and had said that he had not eaten that morning.

He had worn gloves ever since. For six years he had refused it, the way a man refuses a door that opens onto a drop. And then, three years ago, he had taken a job in a city he did not know, in a basement where the dead came in every night with nobody to speak for them, and he had understood that a gift you would not use was only a wound with better manners. So he used it. Sparingly. Reluctantly. With his teeth shut and his eyes closed and the price paid in full afterward, on the tile, in the dark.

It had never once been for a man like Warren Kray.

It was the steel stool beside the table. The same one. He lowered himself onto it with his hands on his knees, and looked at the dead man's face, and then at his own left hand.

It lay on his thigh like something borrowed. Black leather, unmarked, the cuff pressed flat against the wrist. He knew what lay underneath it: three inches of surgical cotton and a thin layer of nitrile and, beneath that, a hand that was pale and ordinary and only four days from its last collapse.

Twice in four days.

He had never done it twice in four days. Frank Lowry had nearly killed him, in some quiet, chemical way. He had spent the next twenty-four hours with a core temperature of ninety-four and a pulse that would not settle, and he had not fully warmed since. It had been a mistake to go to the wharf. It had been a mistake to stand in the stairwell. And it would be a far greater mistake to do this now, with the lab dim and the door locked and nobody within three floors who could hear him fall.

A sane man would have closed the file. He would have sent Kray down to the cooler and waited until morning, and gone to sleep on the cot with his shoes on.

He thought of nine days.

He thought of a pale dead face beneath a streetlamp, and a mouth a little open, as if it had been about to say something.

He thought: Thomas Mercer.

It was not a name Kray had said. It was a name Elias had said to himself, somewhere on the drive across the river, without knowing why. He had said it twice. It had sat in his mouth like a coin. A councilman who had signed every permit on a waterfront. A man in a rumpled shirt who had said the whole thing was wrapped up in four days. He did not know what they had to do with each other. He only knew that two things he had not wanted to look at had, for the first time in twelve years, moved into the same room.

There was one way to see a face.

He took off the disposable glove first. It came away with a wet sound, and he dropped it into the bin. Then the leather. He worked it loose from each finger in turn, and held the empty shell for a moment in his other hand, black and supple and warm from his skin, before setting it gently on the counter beside the tape. Then the nitrile.

His hand lay in the white light, pale and damp and trembling very slightly.

"I am sorry," he said aloud, to no one. "I do not want to do this."

It was true. He never wanted to. It was the one thing about it that never changed.

He laid his bare palm against the incision in the dead man's throat.

For a heartbeat there was only cold.

Then the lab went out like a candle, and the rain came in.

Sixty.

Wet. Wet through the soles of his shoes, wet at the collar, wet down the back of his neck. He is walking along the river. The boards of the pier are slick underfoot and the string of lamps overhead makes each puddle shine like a coin. He has a phone in his hand, the screen still lit, and he reads the message again although he knows it by heart. I have what Thomas Mercer kept. Pier 44. Nine-thirty. Come alone.

Fifty-two.

He is afraid. He is so afraid that his mouth tastes of pennies. He tells himself he is here to buy it, whatever it is. He will pay. Men like him always pay. He has a checkbook in his pocket and a hundred thousand in a locked drawer at home, and he has told himself for twelve years that the matter was finished. They had been so sure. There were six of them, six men around a table with a bottle of very old brandy, and they had all been told it was buried.

Forty-four.

Footsteps.

They come from behind the pier house at the end of the boards, unhurried and soft. A figure steps out of the dark into the edge of the lamplight. A tall man, broad across the shoulders, in a long black waxed jacket with the hood drawn up. The rain runs off it in bright strings. His face is a shadow. His hands are gloved. In the right one he holds something small and bright, low against his thigh, the way a man holds a pen.

"Warren Kray," says the voice.

It is very calm. It is quiet and level and without anger, a voice that might be reading a name off a list. Kray knows he has heard it before, and cannot think where.

Thirty-six.

"Who are you?" His own voice comes out thin. "Is this about money? Because I can pay. Whatever he's offered you, whatever they told you. I can double it."

"Do you remember a fire?"

It is the smallest question. It goes into him like a knife. His heart slams, once, hard enough to hurt. For a moment the whole wet night disappears and he is standing in a paneled room with gold curtains, with a glass in his hand, hearing a man say in a low, pleasant voice that the thing was handled and nobody would ever trouble them again.

"Thomas," he whispers. "Thomas Mercer."

"Yes."

Twenty-seven.

"It was not supposed to..." The words tumble out of him. "They said it would be clean. Nobody was supposed to be in the house. It was only supposed to be Thomas. They said the boy was away, they said it was only..."

"I know."

The hooded head tilts, very slightly. There is something in the movement that is almost gentle.

He steps forward. It is not a rush. It is not a lunge. It is the graceful, unhurried motion of a man crossing a room to close a window, and Kray does not move, because he cannot. Because every muscle in his body has gone to water. The bright thing flickers once in the lamplight. There is a line of heat across the side of his throat, bright and brief, like the touch of a hot wire.

Nineteen.

He hears a sound, a soft wet sound, and does not know it is himself.

A gloved hand closes on his shoulder. It is steadying him. It is holding him up. He feels his knees go, and the hand goes with him, lowering him to the boards with enormous care, the way you would set down something breakable. His coat is warm. His collar is warm. He is kneeling in the rain, and the warmth is going down his chest, and the lamp above him swims and doubles.

Eleven.

The cold comes up from his feet. He is so tired. He has never been so tired in his life. His head tips back against a supporting arm, and he lets it, because there is nothing else to do, and far away a car passes on the road above the river, its headlights sweeping across the wet planks in a long pale arc.

Five.

The light goes over the hooded face like a hand.

The hood has slipped. It has fallen back in the lowering, and the rain runs down the face beneath, plastering dark hair against a strong brow. The eyes are steady. The jaw is set. The expression is not cruel. It is not triumphant. It is calm, and tired, and almost tender, the face of a man who has done a hard thing and will do it again.

Kray knows him. He has seen that face across a crowded briefing room. He has seen it on the evening news, in the front row of a press conference, standing quietly behind a podium with his hands folded. He knows it, and the knowing is the last thing he feels.

"It is all right," says Captain Luke Harrow, very softly. "It is almost over."

Three.

Rain.

Zero.

Elias came back into his body like a man thrown from a height.

He was on the floor. He did not remember falling. The tile pressed against his cheek, and it was colder than anything he had ever felt, and his whole body was convulsing in long hard shudders that seemed to come from somewhere below his ribs. His bare hand lay open on the tile beside his face. The fingers were blue. His teeth chattered so violently that he could hear them in his skull.

Above him, the overhead light swung slowly in and out of focus.

He could not breathe.

He tried. He dragged at the air, and it went in thin and scraping, and did not seem to reach anywhere. He could feel his heart, slow and heavy and very far away, each beat a long hollow thud with a longer silence after it. The cold had gone right through him. It had settled in his marrow and was spreading outward like ink in water, and he lay on the floor of his own laboratory and understood, with perfect clarity, that this was not the same as the other times.

It is almost over.

The voice went through him, and through him again. He knew it. He knew it as he knew his own name. He had heard it in a cold room, saying please. He had heard it on a ledge above the harbor, saying I am right here. He had heard it in a stairwell, low and level, telling him he need not answer. It was the same voice. It was the same quiet, patient, unhurried tenor, and it had said those words to a dying man with exactly the tenderness it had used to ask if it might take an envelope.

Luke.

The name came into his mind with the force of a blow. He had never thought it before. In three years he had never once thought of the man by his first name, and now it rose up in him unbidden, bright and terrible, like a word in a language he had just begun to understand.

Luke Harrow.

A black waxed jacket in the rain. A hand on a railing, an inch from his own. A cup of tea set on the hood of a car, six feet away, and a man who had turned his back so he would not be seen to watch.

The room tilted. He felt himself sliding, slowly, into some long gray tunnel, and fought it, and was not strong enough.

And beneath the terror and the cold and the roaring in his ears there was something else. A small, steady, unbearable thing, and it was his father's name.

Thomas Mercer.

He had heard it said aloud in the last minute of a dying man's life. It had been spoken with terror, and with guilt, and with something that was not quite surprise, and it had been answered by a single word.

Yes.

He did not know how to hold both things. The man who had put a coat around his shoulders. The man who had cut a throat as though closing a window. The man who had known his father's name, and had said it, and had meant it.

They did not belong in the same body. They could not. One of them had to be a lie.

His eyes were closing. He tried to keep them open, to fix them on the ceiling tiles and the swinging light, but the edges of the room were folding in, soft and dark and very quiet. He could hear the rain. He could hear, from very far away, his own breath rattling in his throat.

There was a telephone on the desk.

He could see it from the floor, a small gray shape at the edge of his vision, about nine feet away. Beside it, propped against the lamp, stood a plain white card he had not thrown away. He had only ever looked at it once. He did not need to look at it now. The digits had come to him of their own accord, eleven of them, in a slow steady line, as a prayer comes to a man who has not prayed in years.

Call me, the voice had said. Any hour. I will answer.

He dragged his bare hand across the tile. It moved perhaps six inches. It left a faint wet smear behind it, and he stared at that, at the small smear on the floor, with a kind of dull wonder. Then his fingers curled, and went still, and would not go on.

He could not make a call. He could not have said one word into it. And he would not have called, in any case, because the only number he knew by heart was the number of the man whose face he had just seen in a dying man's eyes.

He lay there, nine feet from the telephone, and laughed. It was a thin, cracked, dreadful sound, and it hurt.

"Elias," he said to the ceiling. His lips barely moved. "You are a fool."

And then, somewhere beyond the dimness, a door.

It was the double doors at the far end of the lab. He knew the sound of them as he knew the sound of his own pulse: the long hydraulic sigh, the soft bump of the rubber seal. He had locked them. He was certain he had locked them. But light was falling across the floor in a long pale wedge, and with it, footsteps. Slow. Even. Unhurried.

A shape moved against the glare. Tall, dark, broad across the shoulders. He could not make out the face. He could not make out anything. The light was too bright, and his eyes would not focus, and the shape came toward him across the tile without haste and without pause, and Elias lay still and watched it come.

He thought he ought to be afraid.

He was. He was more afraid than he had ever been in his life. But he was also so cold, and so tired, and some animal part of him, small and stubborn and ashamed, had already begun to turn toward the approaching warmth.

The footsteps stopped beside him.

Something came down over him, soft and heavy and warm. A fragrance rose around him, faint and dark and clean, and he knew it at once, because he had smelled it in a cold room and wrapped himself in it and refused to give it back. Rain. And wood. And something beneath both that belonged to no one else in the world.

Cedar.

"Elias," said a low voice, very close.

He did not hear what came after. The darkness closed over him like water, and he went down into it, and the last thing he knew was the warmth of the coat, and the sound of his own name.