The call came in at 6:14 on Monday morning, and by seven o'clock the whole of Major Crimes had decided it was not their case.

Elias heard about it in the elevator. He had driven in alone, in the gray Volvo, thirty minutes behind a tall dark sedan that had left the tower garage before he had finished his tea, and he stepped into the elevator at the lobby with his hands in his pockets and his mind a long way off. Two uniformed officers were already inside, talking low. One of them was Pell, the freckled boy from the pier, who straightened when he saw who had come in and gave a small, nervous nod.

"Doc," he said. "Morning."

"Officer Pell."

"Did you hear about St. Jude?"

"I have not."

"A nurse." Pell glanced at the other officer and lowered his voice, though there was no need. "Fell down a stairwell. Four flights. Found at about quarter to six by the cleaning crew. She was one of theirs, you know, night shift. Everybody over there's pretty broken up." He wet his lips. "They're saying she jumped."

The elevator rose. Elias said nothing.

"Sad thing," said the other officer. "Thirty-four years old. Had a kid. I heard she had a note on her phone."

The doors opened on the basement. Elias stepped out, and the doors closed behind him with a hush, and he stood for a moment in the long yellow corridor with the hum of the lights in his ears and a small, cold, steady feeling beginning somewhere beneath his ribs. He had not yet seen the body. He had not yet seen anything. But he had worked in this building for three years, and he knew the sound of a case that was about to be decided before it was begun.

Wade was waiting at the lab door. He looked white.

"Doc," he said. "They sent her down an hour ago. It's on table two. The resident says it's a straightforward jumper. He's already got the paperwork half done." He wet his lips. "I thought you should look first."

"Thank you, Wade."

"She's... it's Becca Hale. From the ICU. I knew her a little. She used to bring doughnuts to the night crew when we were short." His voice cracked on the last word. "I'm sorry. I know it's not professional."

Elias looked at him.

It was not a thing he did often. He looked at the boy's face, pale and young and open, with its anxious eyes and its pink-rimmed lids, and he thought of how he had not once said thank you for a night on a laboratory floor. He did not say it now. He reached out, and for a brief moment laid his gloved hand against the boy's sleeve, a foot above the wrist, over the fabric of the uniform.

"I will look," he said. "Properly."

Wade nodded, hard, and wiped his face on the back of his hand.

She lay on table two under a white sheet, and the resident hovered at her side with a clipboard like a man at the edge of a drop. He was a thin, earnest young man named Fenwick, six weeks out of training, who had not yet learned what to do with his hands. He had already completed the external examination. He had noted multiple fractures consistent with a fall from height. He had noted the pattern of injury, the crushed skull, the broken spine. He had noted the absence of any sign of struggle. In the box marked MANNER OF DEATH he had written, in a round schoolroom hand, Suicide.

"The police say there was a text," he said. "On her phone. She sent it to herself at three-oh-four a.m. It said, I can't do this anymore."

"Who found it?"

"The responding officer. It was open on the screen."

"On the phone she was carrying."

"Yes."

"Was it locked?"

"I don't know." Fenwick blinked. "I didn't think to ask."

Elias drew the sheet down.

Rebecca Hale had been thirty-four years old, and a nurse, and beautiful in a quiet, tired, ordinary way, with a broad kind brow and a mouth that had spent a great many years smiling at the frightened. Her dark hair had been braided and pinned for work. A small silver cross hung at her throat. She lay with her eyes closed, and her hands at her sides, and for a long moment he simply looked at her and did not begin.

He did not like to start too quickly. He did not like it with any of them, but with some it was worse. There were the ones who came to him with the faces of strangers, and the ones who came with the faces of the city's own dead, and then, rarely, the ones who looked as though they had only stepped out and meant to return.

"I am sorry," he said, very low. "I will be careful."

He worked for two hours.

He did it slowly, in the way he did everything, from the outside inward. He checked the fingernails and found them short and clean. He checked the palms and found them unmarked. He lifted each arm in turn and studied the skin from the shoulder to the wrist, and he had been looking for a long time before he saw it.

It was faint. The fall had done a great deal of damage, and the body was a map of ruin, so that a smaller thing might easily be lost beneath the larger. But on the soft inside of each upper arm, a hand's breadth below the shoulder, there was a cluster of small oval marks, a bluish-purple, each about the size of a fingertip.

Four on the right arm. Four on the left. Almost perfectly symmetrical.

He drew breath.

He took out the small steel ruler and laid it against the skin. He measured the spacing. Two centimeters from center to center. He measured the angle of the line they made. He studied the shape of each one, round at the edges, deeper at the center, and the way the color deepened into a faint yellow-green at the margins.

Thumbs on the outside. Fingers on the inside. A hand, closing on each arm, with force.

"What is it?" said Fenwick.

"Bruising."

"Isn't that from the fall?"

"A fall does not produce symmetrical bruises in the pattern of fingertips." Elias kept his eyes on the arm. "These were made by a person who stood facing her and took hold of her above the elbow. They were made with considerable pressure. And they were made before she died, probably within an hour."

Fenwick stared. "But there was a note."

"There was a text message. On a telephone." He straightened. "Anyone can send a text message from a telephone, Dr. Fenwick. It does not require that the person be alive."

The resident went white.

"Change the manner of death," said Elias. "Pending."

"But the police..."

"I will speak to the police."

He did not raise his voice. He did not need to. He simply stood at the foot of the table, tall and pale and perfectly still in his white coat, with the light shining on his black gloves, and the resident, after a moment, took out a pen and crossed out the word Suicide.

It was Ines who made the call.

Elias learned that afterward, from Quinn, who arrived at the lab at ten past eleven with an old leather satchel over her shoulder and a look of concentrated unease. She did not come in. She stood at the door, as everyone did now, with one hand on the frame, and looked past him at the covered table.

"Dr. Mercer," she said. "I hear you've reclassified."

"I have."

"Okay." She let out a long breath. "Good. I mean, that's, I'm glad." She came in a step and then stopped, and he saw that her eyes were red. "Her name's Rebecca Hale. Everybody calls her Becca. I didn't know her. But Ines did. The nurse from your, from when you were there. She called me at six-thirty this morning, and she was crying so hard I couldn't understand her."

"What did she say?"

"That Becca would never do it." Quinn shook her head. "That she was getting her daughter married in May. That she'd been planning it for a year. She had a dress picked out and a hall booked and a, a whole binder. She said, Becca talked about that wedding every night in the break room, for three hundred nights. She said, Detective, please. A woman doesn't do that and then jump."

"People do," said Elias, gently. "It is not an uncommon pattern."

"I know. I know they do." She wiped her eyes with the heel of her hand. "But Ines said something else. She said, Becca was scared of heights. She wouldn't even go up to the roof for the fireworks. She said she once took the stairs down eleven flights rather than ride the glass elevator."

For a moment neither of them spoke.

"I went to the captain," said Quinn. "I told him what Ines said. I thought he'd tell me it wasn't our jurisdiction, because it's, you know, a suicide, it's Patrol and the ME. But he went real quiet. And then he said, Ines looked after Dr. Mercer when he was ill." She hesitated. "He said, I would like to look into this."

Elias said nothing.

It was an odd thing to hear. It was the sort of reasoning he might have expected from a saint, or a very good liar, and he did not know which. He stood by the table with his hands folded, and the light fell across the sheet, and he thought of a man in a plastic chair with a black jacket on his knees.

"He's coming down in a few minutes," Quinn said. "He wants to see the arms."

"Very well."

"Dr. Mercer?"

"Yes?"

"Thank you." Her face was very young. "For looking."

She went out. He stood alone in the lab, and heard her footsteps going away up the corridor, and a moment later, quite distinctly, another set of footsteps coming down.

They stopped at the door.

"Doctor."

"Captain."

"I understand there are marks."

"There are."

"May I see?"

It was his lab. It was his rule. He had set it himself, in a narrow alcove on the ground floor, and for ten days it had held. He looked at the man in the doorway, with his tie knotted and his dark coat buttoned and his hands loose at his sides, and he heard himself say, "You may come in."

Luke crossed the threshold.

It was a small thing. It was one step. But the floor of the lab seemed to take a breath as he did it, and Elias felt the room alter around them, subtly, the way a house alters when a long-absent person walks through the door. He did not look. He turned his back, and pulled the sheet from the arm of the dead woman, and said, in the level voice he used for facts, "Here."

Luke came and stood at his shoulder.

He did not touch anything. He stood a careful foot away, with his hands clasped behind him, and bent his head to look. In the hard white light the planes of his face looked drawn and still. His eyes moved along the line of the arm, slowly, like a man reading a page.

"Four," he said, quietly.

"Four on each side."

"A hand."

"Two. One on either arm. The assailant stood in front of her."

"Facing."

"Yes."

"With his thumbs on the outside." Luke straightened a little. "Which means that he was taller. And that he was holding her upright. Not pulling. Holding." His voice dropped. "It is how you hold someone you are speaking to. Someone you are trying to make listen."

Elias looked at him.

It was exactly what he had been about to say.

It had come out of the other man in precisely the shape and order in which it had formed in his own mind, phrase for phrase, down to the very word. They stood side by side at the edge of a steel table, with the dead woman between them, and for a moment neither of them moved. It was an odd sensation, and not wholly unwelcome. It was like hearing one's own thought spoken aloud in a stranger's voice.

"You have seen it before," said Elias.

"A great many times." Luke's eyes were still on the arm. "In kitchens, mostly. Men take hold of women by the arms when they are frightened, and angry, and have run out of words."

"She was not pushed by a stranger."

"No." He lifted his head. "A stranger does not hold you like that. He grabs. He strikes. This was someone who needed her to look at him. Someone who cared very much what she thought, and could not bear it."

The light buzzed overhead. The hum of the refrigeration units rose and fell. Elias found that he was holding his own breath, and he let it out slowly.

"I would like to see the stairwell," said Luke.

They went down at ten that night.

It was Stairwell B, the east stair of St. Jude, a long narrow concrete shaft that ran from the fourth floor to the basement. It was rarely used. The visitors took the elevators and the staff took the main stair, and the east stairwell was kept mostly for fire drills and for nurses who wished to cry in peace. A single bare bulb burned on each landing, caged in wire, and the walls were painted a sickly institutional green that had gone gray with age. The air smelled of dust and cold iron.

Elias stood on the fourth-floor landing with a flashlight in one hand and a small steel tape in the other. He was wearing his black coat, and a pair of paper booties over his shoes, and he felt very tired.

Luke stood at the top of the flight, holding a second light. He had taken off his coat and folded it over the railing. In his shirtsleeves, with the beam of the torch thrown upward, his face was all shadows, and the long line of his shoulder looked very broad against the green wall.

"Here," said Elias. "This is where she went over."

"How do you know?"

"The police found a smear of blood on the railing at this point. And her hair clip, on the landing." He swept the light along the floor. "She fell from the gap between the fourth and third flights. Forty-one feet to the bottom."

"Forty-one feet," Luke said. "And a woman who was afraid of heights."

"Yes."

"She would not have gone near the rail."

"No."

"She would not have stood on this side of it."

"I do not think so."

They stood in the cold air, in the swaying light, and looked at each other. Neither said what both were thinking. It was a thing too plain to need saying. A woman who could not ride a glass elevator had not climbed a flight of stairs in the dead of night and thrown herself over a railing. Somebody had brought her here, or followed her, or been waiting.

Luke crouched.

He lowered the flashlight until the beam lay flat across the floor, and the concrete sprang into sudden sharp relief, every crack and grain and scuff thrown into shadow. "Look," he said. "There."

Elias bent. He had to kneel to see it. On the gray floor, perhaps three feet from the rail, there were two faint parallel scratches, each about six inches long, running toward the door.

"Heels," he said slowly.

"Dragged. She was pulled backward. Her feet were trailing." Luke's finger hovered above the marks without touching. "She was facing the door. She was facing the person who held her. And she was moving away from him, toward the rail, as he walked her."

"Walked her."

"Held her by the arms. And drove her back." A pause. "And at the rail, he let go."

Elias thought of the marks on the white skin, four and four. He thought of the way a man might hold a woman, face to face, in the half-dark, and say, in a low hard voice, listen to me. He thought of the dress in the closet and the binder on the shelf.

"It was not meant to be a murder," he said.

Luke looked up.

"It was meant to be a conversation." Elias heard his own voice, thin in the cold. "He wanted her to hear something. She would not. She said something that frightened him, or she moved to go, and he held on, and then there was the rail behind her. And then he had done it."

"And after?"

"He did not run. He took her phone. He wrote the message."

"With her own hand?"

"With her own thumb. Held." He swallowed. "He is not a stupid man. He is careful, and cold, and he planned the end of it in the space of a minute."

Luke said nothing. He remained crouched, with the light in his hand, looking at the two small pale scars on the floor. His face in the half-light was strange. There was something in it that Elias could not read, a stillness, a long gathering silence, like water running very deep.

"You say it as though you had seen it," he said.

"I have seen the arms."

"Yes." Luke rose slowly. "I suppose that is what I mean."

They worked together for another two hours.

It went without friction. It went, Elias thought, almost too well. Each of them took what the other left. He measured the distance from the rail to the heel marks and called out the numbers, and Luke wrote them in a small black notebook, and before he had finished speaking the other man had marked the spot with a strip of tape. They swept the landing for fibers. They photographed the rail. Elias said, "The door," and Luke said, "The badge reader," and they looked at each other, and went down the stairs, and found that the reader on the fourth floor had logged one card at 3:02 a.m. and another at 3:09, and that the first had been Rebecca Hale's own, and that the second had belonged to no one.

"A tailgate," said Elias.

"He came in behind her."

"Or was already inside."

"Yes."

"Cameras?"

"Not in the stairwells. Only at the doors." Luke's mouth tightened. "And the camera on the fourth-floor door was, forgive me, replaced last week. With a model that does not record at night."

"Convenient."

"For someone who knew."

They stood in the corridor outside the stairwell, in the pale hospital light, and the long floor shone with wax, and a nurse hurried past, glancing at them with a quick curious frown. Elias was aware that they stood very close together, nearer than he usually permitted. He was aware of the warmth of the other man's shoulder, a foot from his own. He was aware that he was not moving away.

It frightened him. But it was a distant fear, a faint low note beneath a larger song, and he found that he could put it aside.

It was past one in the morning when they returned to the basement.

The building was silent. Wade had long since gone home, and the lights were low, and the corridor lay empty and dim under the hum of the fluorescents. Elias unlocked the lab door and hesitated. He did not step inside. He turned. Luke stood a little behind him, with his coat folded over his arm and the notebook in his hand.

"There is tea," said Elias.

He did not know why he said it. It came out slowly, flat and a little stiff, a thing offered across a gap.

Luke looked at him.

"In the kettle. It will not take long." A pause. "It is not much."

"I would like that very much," said Luke.

They sat in the corridor.

It was not a decision. Neither of them spoke of it. Elias brought two mugs from the lab and set one on the floor, and Luke lowered himself against the wall, six feet away, with his long legs stretched out and his back against the cool yellow tile. Elias sat opposite, on an upturned crate, with his own cup held in both hands. The space between them was an arm's length and a half. The light hummed overhead. The tea was strong and hot and very plain.

For a long while they did not speak.

It was a curious thing. Elias had known silence in a great many forms. He had known the silence of the morgue and the silence of the empty flat, the cold deep silence of the stairwell where he had sat at eighteen. But this was something else. It was soft, and ordinary, and quite unafraid. They sat with their tea in the humming dimness, like two men on a night watch, and the quiet between them was a shared thing, as a blanket is shared.

"She deserved to be looked at," said Luke, at last.

His voice was low, almost to himself. He was looking into his mug.

"Carefully. By someone who would not look away." He turned the cup slowly in his hands. "Most of the dead are not. Most of them are filed. Their families are told in a few minutes, and a form is signed, and the thing is closed. I have signed a great many such forms." A faint breath. "I have always wished there were someone whose work it was to look."

Elias said nothing.

"It is what you do, Doctor." The dark eyes came up. They were tired, and clear, and very steady. "You are the one who looks. It is the thing I admire in you most."

It was said so quietly, and so simply, that it went through Elias like warmth through cold water. He held his cup, and said nothing, and could find no words at all.

He thought: he looks at everything.

It came to him very clearly, in the long dim corridor, with the tea going cool in his hands. Luke Harrow looked at everything. He looked at a scuff on a floor and a smear on a rail. He looked at the way a woman had been held. He looked at a boy who was sick on a pier and a stranger in a cold room and a pathologist in a doorway, and he saw each of them whole.

He had looked at Elias, too.

He had looked at him for a long time. Elias knew it. He had known it since a spring of three years ago, though he had not put a name to it. He had known it every time he turned a corner and found a figure at the far end of a corridor. It was the look of someone who had read every page.

He lifted his eyes. In the half-light, Luke was watching him, quite still, with a faint soft crease at the corner of his mouth.

"The mark on the left arm is the clearest," Elias said. His voice was not quite steady. "I shall take sections tomorrow. Histology will confirm that the bruising was inflicted in life. It will take two days."

"Of course."

"It will tell us that she was held. It will not tell us by whom."

"No."

"A stranger might have held her. A friend. A colleague. A lover." He swallowed. "A husband."

"Yes."

"We have no way to tell."

"None," said Luke, "that the court would accept."

The words hung in the cold air.

Elias set down his cup. He looked at it, and then at his hands, black and gloved and perfectly still on his knees. He thought of the cold steel of the table. He thought of the pale quiet face under the sheet.

There was a way. He knew it, quite clearly, as he knew his own name. It lay in the cold wet palm of his own hand. It would cost him a night of shaking on a tile floor, and a day of fever, and a week of ice in the marrow of his bones, and he had barely begun to recover from the last. He thought of Kray, ten days ago, and Frank Lowry before him. Three times in a fortnight. He did not know if his body would stand it.

But there was a woman who had been afraid of heights, and a husband who wept, and a binder on a shelf.

"I am tired," he said.

"I know."

"You should go home."

"We shall go together," said Luke. "When you are ready."

He did not rise. He sat against the wall with his mug between his palms, patient and quiet, in the long yellow light. And Elias, who had come to the end of the day with no strength left, found that he did not at all wish to be the first to move.