EIGHT MINUTES LATER he heard a key in the lock and looked up and expected to see Poulton at the door. But it wasn't Poulton. It was a woman. She looked about sixteen. She had long fair hair in a loose ponytail. White teeth in an open, tanned face. Bright blue eyes. She was wearing a man's suit, extensively tailored to fit. A white shirt and a tie. Small black shoes with low heels. She was over six feet tall, long-limbed, and very slim. And completely spectacular. And she was smiling at him.

"Hi," she said.

Reacher made no reply. Just stared at her. Her face clouded and her smile turned a little embarrassed.

"So you want to do the FAQs right away?"

"The what?" "The FAQs. Frequently asked questions."

"I'm not sure I have any questions."

"Oh, OK."

She smiled again, relieved. It gave her a frank, guileless look.

"What are the frequently asked questions?" he asked.

"Oh, you know, the stuff most new guys around here ask me. It's really, really tedious."

She meant it. He could see that. But he asked anyway.

"What kind of stuff?" he said.

She made a face, resigned.

"I'm Lisa Harper," she said. "I'm twenty-nine, yes really, I'm from Aspen, Colorado, I'm six feet one, yes really, I've been at Quantico two years, yes I date guys, no I dress like this just because I like it, no I'm not married, no I don't currently have a boyfriend, and no I don't want to have dinner with you tonight."

She finished with another smile and he smiled back.

"Well, how about tomorrow night?" he said.

She shook her head. "All you need to know is I'm an FBI agent, on duty."

"Doing what?"

"Watching you," she said. "Where you go, I go. You're classified SU, status unknown, maybe friendly, maybe hostile. Usually that means an organized-crime plea bargain, you know, some guy ratting out his bosses. Useful to us, but not reliable."

"I'm not organized crime."

"Our file says you might be."

"Then the file is bullshit."

She nodded, and smiled again. "I looked Petrosian up separately. He's a Syrian. Therefore his rivals are Chinese. And they never employ anybody except other Chinese. Implausible they'd use an American WASP like you."

"You point that out to anybody?"

"I'm sure they already know. They're just trying to get you to take the threat seriously."

"Should I take it seriously?"

She nodded. Stopped smiling.

"Yes, you should," she said. "You should think very carefully about Jodie."

"Jodie's in the file?"

She nodded again. "Everything's in the file."

"So why don't I have a handle on my door? My file shows I'm not the guy."

"Because we're very cautious and your profile is very bad. The guy will turn out to be very similar to you."

"You a profiler too?"

She shook her head. The ponytail moved with it. "No, I'm operational. Assigned for the duration. But I listen carefully. Listen and learn, right? So let's go."

She held the door. It closed softly behind him as they walked to a different elevator. This one had buttons for five basement floors in a line beneath 3, 2, and 1. Lisa Harper pressed the bottom button. Reacher stood beside her and tried not to breathe in her scent. The elevator settled with a bump and the door slid back on a gray corridor bright with fluorescent light.

"We call this the Bunker," Harper said. "It used to be our nuclear shelter. Now it's BS."

"That's for damn sure," Reacher said.

"Behavioral Science. And that's a very old joke."

She led him to the right. The corridor was narrow, and clean, but not public-area clean. It was a working place. It smelled faintly of sweat and old coffee and office chemicals. There were notice boards on the walls and random stacks of stationery cartons in the corners. There was a line of doors in the left-hand wall.

"Here," Harper said.

She stopped him in front of a door with a number on it and reached across him and knocked. Then she used the handle and opened it up for him.

"I'll be right outside," she said.

He went in and saw Nelson Blake behind a crowded desk in a small untidy office. There were maps and photographs taped carefully to the walls. Piles of paper everywhere. No visitor chair. Blake was glowering. His face was red with blood pressure and pale with strain, all at the same time. He was watching a muted television set. It was tuned to a political cable channel. A guy in shirtsleeves was reading something to a committee. The caption read Director of the FBI.

"Budget hearings," Blake muttered. "Singing for our damn supper."

Reacher said nothing. Blake kept his eyes on the television.

"Case conference in two minutes," he said. "So listen up for the rules. Consider yourself somewhere between a guest and a prisoner here, OK?"

Reacher nodded. "Harper already explained that."

"Right. She stays with you, all the time. Everything you do, everywhere you go, you're supervised by her. But don't get the wrong idea. You're still Lamarr's boy, only she stays here, because she won't fly. And you'll need to get around some. Whereupon we need to keep an eye on you, so Harper goes too. The only time you're alone is when you're locked in your room. Your duties are what Lamarr tells you they are. You wear your ID at all times."

"OK."

"And don't get ideas about Harper. Thing with her is, she looks nice, but you start messing with her, then she's the bitch from hell, OK?"

"OK."

"Anything else?"

"Is my phone tapped?"

"Of course it is." Blake riffed through papers. Slid a thick finger down a printout. "You just called your girlfriend, private office line, apartment, mobile. No answer. "

"Where is she?"

Blake shrugged. "Hell should I know?"

Then he scrabbled in the pile of paper on his desk and came up with a large brown envelope. Held it out.

"With Cozo's compliments," he said.

Reacher took the envelope. It was stiff and heavy. It contained photographs. Eight of them. They were color glossies, eight by ten. Crime scene photographs. They looked like stuff from a cheap skin magazine, except the women were all dead. The corpses were displayed in limp imitations of centerfolds. They were mutilated. Pieces were missing. Things had been inserted into them, here and there.

"Petrosian's handiwork," Blake said. "Wives and sisters and daughters of people who pissed him off."

"So how come he's still running around?"

There was silence for a second.

"There's proof, and then there's proof, right?" Blake said.

Reacher nodded. "So where's Jodie?"

"Hell should I know?" Blake said again. "We've got no interest in her as long as you play ball. We're not tailing her. Petrosian can find her himself, if it comes to that. We're not going to deliver her to him. That would be illegal, right?"

"So would breaking your neck."

Blake nodded. "Stop with the threats, OK? You're in no position."

"I know this whole thing was your idea."

Blake shook his head. "I'm not worried about you, Reacher. Deep down, you think you're a good person. You'll help me, and then you'll forget all about me."

Reacher smiled. "I thought you profilers were supposed to be real insightful."

THREE WEEKS IS a nice complicated interval, which is exactly why you chose it. It has no obvious significance. They'll drive themselves mad, trying to understand a three-week interval. They'll have to dig real, real deep before they see what you're doing. Too deep to be feasible. The closer they get to it, the less it will mean. The interval leads nowhere. So the interval makes you safe.

But does it have to be maintained? Maybe. A pattern is a pattern. It ought to be a very strict thing. Very precise. Because that's what they're expecting. Strict adherence to a pattern. It's typical in this sort of case. The pattern protects you. It's important. So it should be maintained. But then again, maybe it shouldn't. Three weeks is a pretty long interval. And pretty boring. So maybe you should speed it up. But anything less would be very tight, given the work required. Soon as one was done, the next would have to be prepared. A treadmill. Difficult work, on a tight schedule. Not everybody could do it. But you could.

THE CASE CONFERENCE was held in a long low room a floor above Blake's office. There was light brown fabric on the walls, worn shiny where people had leaned on it or brushed against it. One long wall had four recesses let into it, with blinds and concealed lighting simulating windows, even though the room was four stories underground. There was a silent television mounted high on the wall, with the budget hearings playing to nobody. There was a long table made of expensive wood, surrounded by cheap chairs set at forty-five degree angles so they faced the head of the table, where there was a large empty blackboard set against the end wall. The blackboard was modern, like it came from a well-endowed college. The whole place was airless and quiet and isolated, like a place where serious work was done, like a postgraduate seminar room.

Harper led Reacher to a seat at the far end from the blackboard. The back of the class. She sat one place nearer the action, so he had to look past her shoulder. Blake took the chair nearest the board. Poulton and Lamarr came in together, carrying files, absorbed in low conversation. Neither of them glanced anywhere except at Blake. He waited until the door closed behind them and then stood up and flipped the blackboard over.

The top right quarter was occupied by a large map of the United States, dotted with a forest of flags. Ninety-one of them, Reacher guessed, without trying to count them all. Most of them were red, but three of them were black. Opposite the map on the left was an eight-by-ten color photograph, cropped and blown up from a casual snapshot taken through a cheap lens onto grainy film. It showed a woman, squinting against the sun and smiling. She was in her twenties, and pretty, a plump happy face framed by curly brown hair.

"Lorraine Stanley, ladies and gentlemen," Blake said. "Recently deceased in San Diego, California."

Underneath the smiling face were more eight-by-tens pinned up in a careful sequence. The crime scene. They were crisper photographs. Professional. There was a long shot of a small Spanish-style bungalow, taken from the street. A close-up of the front door. Wide shots of a hallway, a living room, the master bedroom. The master bathroom. The back wall was all mirror above twin sinks. The photographer was reflected in the mirror, a large person bundled into a white nylon coverall, a shower cap on his head, latex gloves on his hands, a camera at his eye, the bright halo of the strobe caught by the mirror. There was a shower stall on the right, and a tub on the left. The tub was low, with a wide lip. It was full of green paint.

"She was alive three days ago," Blake said. "Neighbor saw her wheeling her garbage to the curb, eight forty-five in the morning, local time. She was discovered yesterday, by her cleaner."

"We got a time of death?" Lamarr asked.

"Approximate," Blake said. "Sometime during the second day."

"Neighbors see anything?"

Blake shook his head. "She took her garbage can back inside, the same day. Nobody saw anything after that."

"MO?"

"Exactly identical to the first two."

"Evidence?"

"Not a damn thing, so far. They're still looking, but I'm not optimistic."

Reacher was focusing on the picture of the hallway. It was a long narrow space leading past the mouth of the living room, back to the bedrooms. On the left was a narrow shelf at waist height, crowded with tiny cactus plants in tiny terra-cotta pots. On the right were more narrow shelves, fixed to the wall at random heights and in random lengths. They were packed with small china ornaments. Most of them looked like dolls, brightly painted to represent national or regional costumes. The sort of things a person buys when she's dreaming of having a home of her own.

"What did the cleaner do?" he asked.

Blake looked all the way down the table. "Screamed a bit, I guess, and then called the cops."

"No, before that. She has her own key?"

"Obviously."

"Did she go straight to the bathroom?"

Blake looked blank and opened a file. Leafed through it and found a faxed copy of an interview report. "Yes, she did. She puts stuff in the toilet bowl, leaves it to work while she does the rest of the house, comes back to it last."

"So she found the body right away, before she did any cleaning?"

Blake nodded.

"OK," Reacher said.

"OK what?"

"How wide is that hallway?"

Blake turned and examined the picture. "Three feet? It's a small house."

Reacher nodded. "OK."

"OK what?"

"Where's the violence? Where's the anger? She answers the door, this guy somehow forces her back through the hallway, through the master bedroom, into the bathroom, and then carries thirty gallons of paint through after her, and he doesn't knock anything off those shelves."

"So?"

Reacher shrugged. "Seems awful quiet to me. I couldn't wrestle somebody down that hallway without touching all that stuff. No way. Neither could you."

Blake shook his head. "He doesn't do any wrestling. Medical reports show the women probably aren't touched at all. It's a quiet scene, because there is no violence."

"You happy with that? Profile-wise? An angry soldier looking for retribution and punishment, but there's no uproar?"

"He kills them, Reacher. The way I see it, that's retribution enough."

There was silence. Reacher shrugged again. "Whatever. "

Blake faced him down the length of the table. "You'd do it differently?"

"Sure I would. Suppose you keep on pissing me off and I come after you. I don't see myself being especially gentle about it. I'd probably smack you around a little. Maybe a lot. If I was mad with you, I'd have to, right? That's what being mad is all about."

"So?"

"And what about the paint? How does he bring it to the house? We should go to the store and check out what thirty gallons looks like. He must have a car parked outside for twenty, thirty minutes at least. How does nobody see it? A parked car, or a wagon, or a truck?"

"Or a sport-utility, rather like yours."

"Maybe totally identical to mine. But how come nobody sees it?"

"We don't know," Blake said.

"How does he kill them without leaving any marks?"

"We don't know."

"That's a lot you don't know, right?"

Blake nodded. "Yes, it is, smart guy. But we're working on it. We've got eighteen days. And with a genius like you helping us, I'm sure that's all we're going to need."

"You've got eighteen days if he sticks to his interval, " Reacher said. "Suppose he doesn't?"

"He will."

"You hope."

Silence again. Blake looked at the table, and then at Lamarr. "Julia?"

"I stand by my profile," she said. "Right now I'm interested in Special Forces. They're stood down one week in three. I'm sending Reacher to poke around."

Blake nodded, reassured. "OK, where?"

Lamarr glanced at Reacher, waiting. He looked at the three black flags on the map.

"Geography is all over the place," he said. "This guy could be stationed anywhere in the United States."

"So?"

"So Fort Dix would be the best place to start. There's a guy I know there."

"Who?"

"A guy called John Trent," Reacher said. "He's a colonel. If anybody's going to help me, he might."

" Fort Dix?" Blake said. "That's in New Jersey, right?"

"It was last time I was there," Reacher said.

"OK, smart guy," Blake said. "We'll call this Colonel Trent, get it set up."

Reacher nodded. "Make sure you mention my name loud and often. He won't be very interested unless you do."

Blake nodded. "That's exactly why we brought you on board. You'll leave with Harper, first thing in the morning."

Reacher nodded, and looked straight at Lorraine Stanley's pretty face.

YES, MAYBE IT'S time to throw them a curve. Maybe tighten the interval, just a little bit. Maybe tighten it a lot. Maybe cancel it altogether. That would really unsettle them. That would show them how little they know. Keep everything else the same, but alter the interval. Make it all a little unpredictable. How about it? You need to think.

Or maybe let a little of the anger show, too. Because anger is what this is about, right? Anger, and justice. Maybe it's time to make that a little clearer, a little more obvious. Maybe it's time to take the gloves off. A little violence never hurt anybody. And a little violence could make the next one a little more interesting. Maybe a lot more interesting. You need to think about that, too.

So what's it to be? A shorter interval? Or more drama at the scene? Or both? How about both? Think, think, think.

LISA HARPER TOOK Reacher up to ground level and outside into the chill air just after six in the evening. She led him down an immaculate concrete walkway toward the next building in line. There were knee-high lights set on both sides of the path, a yard apart, already turned on against the gloom of evening. Harper walked with an exaggerated long stride. Reacher wasn't sure if she was trying to match his, or if it was something she'd learned in deportment class. Whatever, it made her look pretty good. He found himself wondering what she'd look like if she was running. Or lying down, with nothing on.

"Cafeteria's in here," she said.

She was ahead of him at another double set of glass doors. She pulled one open and waited until he went inside in front of her.

"To the left," she said.

There was a long corridor with the clattering sound and the vegetable smell of a communal dining room at the end of it. He walked ahead of her. It was warm inside the building. He could sense her at his shoulder.

"OK, help yourself," she said. "Bureau's paying."

The cafeteria was a big double-height room, brightly lit, with molded-plywood chairs at plain tables. There was a service counter along one side. A line of personnel, waiting with trays in their hands. Big groups of trainees in dark blue sweats, separated by senior agents in suits standing in ones and twos. Reacher joined the end of the line, with Harper at his side.

The line shuffled up and he was served a filet mignon the size of a paperback book by a cheerful Spanish guy with ID around his neck. He moved on and got vegetables and fries from the next server in line. He filled a cup with coffee from an urn. He took silverware and a napkin and looked around for a table.

"By the window," Harper said.

She led him to a table for four, standing empty by the glass. The bright light in the room made it full dark outside. She put her tray on the table and took her jacket off. Draped it on the back of her chair. She wasn't thin, but her height made her very slender. Her shirt was fine cotton, and she wore nothing underneath it. That was pretty clear. She undid her cuffs and rolled her sleeves to the elbow, one by one. Her forearms were smooth and brown.

"Nice tan," Reacher said.

She sighed.

"FAQs again?" she said. "Yes, it's all over, and no, I don't especially want to prove it."

He smiled.

"Just making conversation," he said.

She looked straight at him.

"I'll talk about the case," she said. "If you want conversation. "

"I don't know much about the case. Do you?"

She nodded. "I know I want this guy caught. Those women were pretty brave, making a stand like that."

"Sounds like the voice of experience."

He cut into his steak and tasted it. It was pretty good. He'd paid forty bucks for worse in city restaurants.

"It's the voice of cowardice," she said. "I haven't made a stand. Not yet anyway."

"You getting harassed?"

She smiled. "Are you kidding?" Then she blushed. "I mean, can I say that without sounding big-headed or anything?"

He smiled back. "Yes, in your case I think you can."

"It's nothing real serious," she said. "Just talk, you know, just comments. Loaded questions, and innuendo. Nobody's said I should sleep with them to get promotion or anything. But it still gets to me. That's why I dress like this now. I'm trying to make the point, you know, I'm just the same as them, really."

He smiled again. "But it's gotten worse, right?"

She nodded, "Right. Much worse."

He made no reply.

"I don't know why," she said.

He looked at her over the rim of his cup. Egyptian cotton button-down, pure white, maybe a thirteen-inch collar, a blue tie knotted neatly in place and rising gently over her small mobile breasts, men's trousers with big darts taken out of them to curve in around her tiny waist. Tanned face, white teeth, great cheekbones, blue eyes, the long blond hair.

"Is there a camera in my room?" he asked.

"A what?"

"A camera," he said again. "You know, video surveillance. "

"Why?"

"I'm just wondering if this is a backup plan. In case Petrosian doesn't pan out."

"What do you mean?"

"Why isn't Poulton looking after me? He doesn't seem to have much else to do."

"I don't follow."

"Yes you do. That's why Blake assigned you, right? So you could get real close to me? All this vulnerable little-girl-lost stuff? I don't know why? So maybe if Blake wants to stop banging on about Petrosian, he's got something else to twist my arm with, like a nice intimate little scene, you and me in my room, on a nice little videocassette he can say he'll send to Jodie."

She blushed. "I wouldn't do a thing like that."

"But he asked you to, right?"

She was quiet for a long time. Reacher looked away and drained his coffee, staring at his own reflection in the glass.

"He practically challenged me to try," he said. "Told me you're the bitch from hell, if anybody puts the moves on."

She was still silent.

"But I wouldn't fall for it, anyway," he said. "Because I'm not stupid. I'm not about to give them any more ammunition."

She was quiet another minute. Then she looked at him and smiled.

"So can we relax?" she said. "Get past it?"

He nodded. "Sure, let's relax. Let's get past it. You can put your jacket back on now. You can stop showing me your breasts."

She blushed again. "I took it off because I was warm. No other reason."

"OK, I'm not complaining."

He turned away again and watched the dark through the window.

"You want dessert?" she asked.

He turned back and nodded. "And more coffee."

"You stay here. I'll get it."

She walked back to the serving counter. The room seemed to fall silent. Every eye was on her. She came back with a tray bearing two ice cream sundaes and two cups of coffee. A hundred people watched her all the way.

"I apologize," Reacher said.

She bent and slid the tray onto the table. "For what?"

He shrugged. "For looking at you the way I've been looking at you, I guess. You must be sick of it. Everybody looking at you all the time."

She smiled. "Look at me as much as you like, and I'll look at you right back, because you aren't the ugliest thing I ever saw either. But that's as far as it's going to go, OK?"

He smiled back. "Deal."

The ice cream was excellent. It had hot fudge sauce all over it. The coffee was strong. If he narrowed his eyes and cut out the rest of the room, he could rate this place about as highly as he had rated Mostro's.

"What do people do here in the evenings?" he asked.

"Mostly they go home," Harper said. "But not you. You go back to your room. Blake's orders."

"We're following Blake's orders now?"

She smiled. "Some of them."

He nodded. "OK, so let's go."

SHE LEFT HIM on the side of the door without the handle. He stood there and heard her footsteps recede across the carpet outside. Then the thump of the elevator door. Then the whine of the car going down. Then the floor fell silent. He walked to the nightstand and dialed Jodie's apartment. The machine cut in. He dialed her office. No answer. He tried her mobile. It was not in service.

He walked to the bathroom. Somebody had supplemented his toothbrush with a tube of toothpaste and a disposable razor and a can of shaving cream. There was a bottle of shampoo on the rim of the tub. There was soap in the dish. Fluffy white towels on the rack. He stripped and hung his clothes on the back of the door. Set the shower to hot and stepped under the water.

He stood there for ten minutes and then shut it off. Toweled himself dry. Walked naked to the window and pulled the drapes. Lay down on the bed and scanned the ceiling. He found the camera. The lens was a black tube the diameter of a nickel, wedged deep in a crack in the molding where the wall met the ceiling. He turned back to the phone. Dialed all the same numbers again. Her apartment. He got the machine. Her office. No reply. Her mobile. Switched off.