Roger Nolan only smiles. Edgerton could be a problem child, but Nolan knows him to be a good detective and is therefore tolerant of his idiosyncrasies. Besides, Edgerton has more than a simple suicide on his plate: He caught the first murder of the year for Nolan's squad, a particularly vicious stabbing from the Northwest that showed no sign of going down easily.

It was the first leg of a midnight shift two weeks back that Edgerton met Brenda Thompson, an overweight, sad-faced woman who finished twenty-eight years in the rear seat of a four-door Dodge found idling at a bus stop and pay phone in the 2400 block of Garrison Boulevard.

The crime scene was largely the Dodge, with the victim slumped in the back seat, her shirt and bra hiked up to display a chest and stomach marked by a dozen or more vertical stab wounds. On the floor of the back seat, the killer had dumped the contents of the victim's purse, indicating an apparent robbery. Beyond that, there was no physical evidence in the car-no fingerprints, no hairs, no fibers, no torn skin or blood beneath the victim's fingernails, no nothing. Without witnesses, Edgerton was in for a long haul.

For two weeks, he had worked backward on Brenda Thompson's last hours, learning that on the night of her murder she was picking up money from a stable of young street dealers who sold her husband's heroin along Pennsylvania Avenue. The drugs were one motive, but Edgerton couldn't discount a straight-up robbery either. Just this afternoon, in fact, he had been across the hall in CID robbery, checking knife attacks in the Northwest, looking for even the slimmest of new leads.

That Edgerton has been working a fresh murder doesn't count for much. Nor does it matter to anyone in his squad that he took the suicide call with little complaint. Edgerton's workload remains a sore point with his colleagues, Bowman and Kincaid in particular. And as their sergeant, Roger Nolan knows that it can only get worse. It's Nolan's responsibility to keep his detectives from one another's throats, and so, more than anyone in the room, the sergeant listens to the banter with the understanding that every comment has an edge.

Bowman, for one, can't leave it alone. "I don't know what we're coming to when Harry has to go out and handle a suicide."

"Don't worry," mutters Edgerton, pulling the report from the typewriter, "after this one, I'm done for the year."

At which point, even Bowman has to laugh.

TWO.

THURSDAY, FEBRUARY 4.

It is the illusion of tears and nothing more, the rainwater that collects in small beads and runs to the hollows of her face. The dark brown eyes are fixed wide, staring across wet pavement; jet black braids of hair surround the deep brown skin, high cheekbones and a pert, upturned nose. The lips are parted and curled in a slight, vague frown. She is beautiful, even now.

She is resting on her left hip, her head c.o.c.ked to one side, her back arched, with one leg bent over the other. Her right arm rests above her head, her left arm is fully extended, with small, thin fingers reaching out across the asphalt for something, or someone, no longer there.

Her upper body is partially wrapped in a red vinyl raincoat. Her pants are a yellow print, but they are dirty and smudged. The front of her blouse and the nylon jacket beneath the raincoat are both ripped, both blotted red where the life ran out of her. A single ligature mark-the deep impression of a rope or cord-travels the entire circ.u.mference of her neck, crisscrossing just below the base of the skull. Above her right arm is a blue cloth satchel, set upright on the pavement and crammed with library books, some papers, a cheap camera and a cosmetic case containing makeup in bright reds, blues and purples-exaggerated, girlish colors that suggest amus.e.m.e.nt more than allure.

She is eleven years old.

Among the detectives and patrol officers crowded over the body of Latonya Kim Wallace there is no easy banter, no coa.r.s.e exchange of cop humor or time-worn indifference. Jay Landsman offers only clinical, declarative statements as he moves through the scene. Tom Pellegrini stands mute in the light rain, sketching the surroundings on a damp notebook page. Behind them, against the rear wall of a rowhouse, leans one of the first Central District officers to arrive at the scene, one hand on his gun belt, the other absently holding his radio mike.

"Cold," he says, almost to himself.

From the moment of discovery, Latonya Wallace is never regarded as anything less than a true victim, innocent as few of those murdered in this city ever are. A child, a fifth-grader, has been used and discarded, a monstrous sacrifice to an unmistakable evil.

Worden had first crack at the call, which came in from communications as nothing more specific than a body in the alley behind the 700 block of Newington Avenue, a residential block in the Reservoir Hill section of the city's midtown. D'Addario's shift had gone to daywork the week before, and when the phone line lit up at 8:15 A.M A.M., his detectives were still a.s.sembling for the 8:40 roll call.

Worden scrawled the particulars on the back of a p.a.w.n shop card, then showed it to Landsman. "You want me to take it?"

"Nah, my guys are all here," the sergeant said. "It's probably some smokehound laid out with his bottle."

Landsman lit a cigarette, located Pellegrini in the coffee room, then grabbed the keys to a Cavalier from a departing midnight shift detective. Ten minutes later, he was on the radio from Newington Avenue, calling for troops.

Edgerton went. Then McAllister, Bowman and Rich Garvey, the workhorse of Roger Nolan's squad. Then Dave Brown, from McLarney's crew, and Fred Ceruti, from Landsman's squad.

Pellegrini, Landsman and Edgerton all work the scene. The others fan out from the body: Brown and Bowman walking slowly in the light rain through adjacent yards and trash-filled alleys, eyes fixed on the ground for a blood trail, a knife, a piece of quarter-inch rope to match the ligature on the neck, a shred of clothing; Ceruti, and then Edgerton, crawling up a wooden ladder to the first-and second-floor tar roofs of adjacent rowhouses, checking for anything not visible from the alley itself; Garvey and McAllister splitting away from the scene to work back on the young girl's last known movements, checking first the missing persons report that had been filed two days earlier, then interviewing teachers, friends and the librarian at the Park Avenue branch, where Latonya Wallace had last been seen alive.

Just inside the rear door of 718 Newington, a few feet from the body, Pellegrini deposits the rain-soaked satchel on a kitchen table surrounded by detectives, patrolmen and lab technicians. Landsman carefully opens the top flap and peers inside at a schoolgirl's possessions.

"Mostly books," he says after a few seconds. "Let's go through it at the lab. We don't want to get into this stuff out here."

Pellegrini lifts the blue bag off the table and carefully hands it to Fasio, the lab tech. Then he returns to his notebook and reviews the raw details of a crime scene-time of call, unit numbers, times of arrival-before walking out the rear door and staring for a few more moments at the dead child.

The black Dodge morgue wagon is already parked at the end of the alley and Pellegrini watches Pervis from the ME's office make his way down the pavement and into the yard. Pervis looks briefly at the body before finding Landsman in the rear kitchen.

"Are we ready to go?"

Landsman glances over at Pellegrini, who seems to hesitate for a moment. Standing in that kitchen doorway on Newington Avenue, Tom Pellegrini feels a fleeting impulse to tell the ME to wait, to keep the body where it is-to slow the entire process and take hold of a crime scene that seems to be evaporating before his eyes. It is, after all, his murder. He had arrived first with Landsman; he is now the primary detective. And although half the shift is now snaking through the neighborhood in search of information, it will be Pellegrini alone who stands or falls with the case.

Months later, the detective will remember that morning on Reservoir Hill with both regret and frustration. He will find himself wishing that for just a few minutes he could have cleared the yard behind 718 Newington of detectives and uniforms and lab techs and ME attendants. He will sit at his desk in the annex office and imagine a still, silent tableau, with himself at the edge of the rear yard, seated in a chair, perhaps on a stool, examining the body of Latonya Wallace and its surroundings with calm, rational precision. Pellegrini will remember, too, that in those early moments he had deferred to the veteran detectives, Landsman and Edgerton, abdicating his own authority in favor of men who had been there many times before. That was understandable, but much later Pellegrini will become frustrated at the thought that he was never really in control of his case.

But in the crowded kitchen that morning, with Pervis leaning into the doorway, Pellegrini's discomfort is nothing more than a vague feeling with neither voice nor reason behind it. Pellegrini has sketched the scene in his notebook and, along with Landsman and Edgerton, has walked every inch of that yard and much of the alley as well. Fasio has his photos and is already measuring the key distances. Moreover, it is now close to nine. The neighborhood is stirring, and in the bleak light of a February morning, the presence of a child's body, eviscerated and splayed on wet pavement under a slow drizzle, seems more obscene with each pa.s.sing moment. Even homicide detectives must live with the natural, unspoken impulse to bring Latonya Kim Wallace in from the rain.

"Yeah, I think we're ready," says Landsman. "What do you think, Tom?"

Pellegrini pauses.

"Tom?"

"No. We're ready."

"Let's do it."

Landsman and Pellegrini follow the morgue wagon back downtown to get a jump on the postmortem while Edgerton and Ceruti pilot separate cars to a drab pillbox of an apartment building on Druid Lake Drive, about three and a half blocks away. Both men drop cigarette b.u.t.ts outside the apartment door, then step quickly to the first-floor landing. Edgerton hesitates before knocking and looks at Ceruti.

"Lemme take this one."

"Hey, it's all yours, Harry."

"You'll bring her down to the ME, okay?"

Ceruti nods.

Edgerton puts his hand to the door and knocks. He pulls out his shield and then inhales deeply at the sound of footsteps inside apartment 739A. The door opens slowly to reveal a man in his late twenties or early thirties, wearing denims and a T-shirt. He acknowledges and accepts the two detectives with a slight nod even before Edgerton can identify himself. The young man steps back and the detectives follow him across the threshold. In the dining room sits a small boy, eating cold cereal and turning the pages of a coloring book. From a back bedroom comes the sound of a door opening, then footsteps. Edgerton's voice falls close to a whisper.

"Is Latonya's mother home?"

There is no chance to answer. The woman stands in a bathrobe at the edge of the dining room, beside her a young girl, just into her teens perhaps, with the same flawless features as the girl on Newington Avenue. The woman's eyes, terrified and sleepless, fix on Harry Edgerton's face.

"My daughter. You found her?"

Edgerton looks at her, shakes his head sideways, but says nothing. The woman looks past Edgerton to Ceruti, then to the empty doorway.

"Where is she? She ... all right?"

Edgerton shakes his head again.

"Oh G.o.d."

"I'm sorry."

The young girl stifles a cry, then falls into her mother's embrace. The woman takes the child in her arms and turns toward the dining room wall. Edgerton watches the woman fight a wave of emotion, her body tensing, her eyes closing tight for a long minute.

The young man speaks. "How did ..."

"She was found this morning," says Edgerton, his voice barely audible. "Stabbed, in an alley near here."

The mother turns back toward the detective and tries to speak, but the words are lost in a hard swallow. Edgerton watches her turn and walk toward the bedroom door, where another woman, the victim's aunt and the mother of the boy eating cereal, holds out her arms. The detective then turns to the man who opened the door, who, though dazed, still seems to understand and accept the words thrown at him.

"We'll need her to go to the medical examiner's office, for a positive identification. And then, if it's at all possible, we'd like you all to come to headquarters, downtown. We're going to need your help now."

The young man nods, then disappears into the bedroom. Edgerton and Ceruti stand alone in the dining room for several minutes, awkward and uncomfortable, until the silence is broken by an anguished wail from the back bedroom.

"I hate this," says Ceruti softly.

Edgerton walks over to a set of dining room shelves and picks up a framed photograph of two young girls seated side by side in pink bows and lace, carefully posed before a blue backdrop. Toothy, say-cheeseburger smiles. Every braid and curl in place. Edgerton holds up the photograph for Ceruti, who has slumped into a dining room chair.

"This," says Edgerton, looking over the photo, "is what this motherf.u.c.ker gets off on."

The teenage girl closes the bedroom door softly and walks toward the dining room. Replacing the picture frame, Edgerton suddenly recognizes her as the older girl in the photograph.

"She's getting dressed now," the girl says.

Edgerton nods. "What's your name?"

"Rayshawn."

"And you're how old?"

"Thirteen."

The detective looks again at the picture. The girl waits a few moments for another question; when none is forthcoming, she wanders back into the bedroom. Edgerton walks softly through the dining room and living room, then into the apartment's tiny kitchen. The furnishings are spare, the furniture mismatched, and the living room sofa worn around the edges. But the place is well kept and clean-very clean, in fact. Edgerton notices that most of the shelf s.p.a.ce is devoted to family photographs. In the kitchen, a child's painting-big house, blue sky, smiling child, smiling dog-is taped to the refrigerator door. On the wall is a mimeographed list of school events and parent a.s.sociation meetings. Poverty, perhaps, but not desperation. Latonya Wallace lived in a home.

The bedroom door opens and the mother, fully dressed and followed by her older daughter, steps into the hallway. She walks wearily through the dining room to the front closet.

"Ready?" Edgerton asks.

The woman nods, then pulls her coat from its hanger. Her boyfriend takes his own jacket. The thirteen-year-old hesitates at the closet door.

"Where's your coat?" her mother asks.

"In my room, I think."

"Well, go find it," she says softly. "It's cold out."

Edgerton leads the procession from the apartment, then watches as the mother, boyfriend and sister squeeze into Ceruti's Cavalier for the slow ride to Penn Street, where a silver gurney will be waiting in a tiled room.

Meanwhile, on the southwestern edge of Reservoir Hill, Rich Garvey and Bob McAllister are tracing the last movements of Latonya Wallace. A report of the child's disappearance had been filed by the family about 8:30 on the evening of February 2, two days earlier, but it read like dozens of other reports filed every month in Baltimore. The paperwork had not yet reached homicide, and any investigation had been limited to routine checks by the missing persons unit at Central District.

The two detectives head first to Latonya's school to interview the princ.i.p.al, several teachers, and a nine-year-old playmate of the victim as well as the playmate's mother, who had both seen Latonya on the afternoon of her disappearance. The interviews confirm the substance of the missing persons report: On the afternoon of Tuesday, February 2, Latonya Wallace returned home from Eutaw-Marshburn Elementary School. She arrived about three o'clock and left the house less than a half hour later with her blue bookbag, telling her mother she wanted to visit the city library branch on Park Avenue, about four blocks from the family apartment. Latonya then walked to the building next door, knocking on the door of the playmate's apartment to see if she, too, wanted to go to the library. When the younger girl's mother decided to keep her daughter home, Latonya Wallace set out on her own.

Garvey and McAllister pick up the chronology at the Park Avenue library branch, where the afternoon librarian remembers the visit by the girl in the red raincoat. The librarian recalls that the child stayed only a few minutes, picking out a series of books almost at random, giving little or no thought to the t.i.tles or subjects. Thinking back, the librarian also tells the detectives that the young girl had seemed preoccupied or troubled, and had paused in thought at the library door just before leaving.

Then Latonya Wallace carried her bookbag into the daytime bustle of a Baltimore street and vanished, her pa.s.sing unseen by any known witness. The child had remained hidden for a day and a half before being dumped in that back alley. Where she had been taken, where she had stayed for more than thirty-six hours-the primary crime scene-was still not known. The detectives would begin their pursuit of Latonya Wallace's killer with little more physical evidence than the body itself.

Indeed, that is where Tom Pellegrini begins. He and Jay Landsman wait in the bas.e.m.e.nt autopsy room of the medical examiner's offices on Penn Street, watching the cutters extract cold, clinical data from the earthly remains of Latonya Wallace. The facts initially seem to suggest a prolonged abduction: The victim's stomach is determined to contain one fully digested meal of spaghetti and meatb.a.l.l.s followed by a partially digested meal of hot dogs and a shredded, stringy substance believed to be sauerkraut. A detective calls the school cafeteria and is told that the lunch menu on February 2 was spaghetti, and yet Latonya Wallace did not eat anything at home before heading for the library later that afternoon. Had the murderer kept the child alive long enough to provide her with a last meal?

As the detectives stand at the edge of the autopsy room and confer with the medical examiners, Pellegrini's foreboding at the crime scene begins to take solid form: Newington Avenue had indeed been cleared too soon. At least one piece of evidence was forever lost.

Informed of the child's murder even as the detectives were finishing their work at the scene, the state's chief medical examiner, John Smialek, rushed from his office to Reservoir Hill only to arrive after the body was removed. Lost was an opportunity for Smialek to use an internal thermometer to calibrate the body temperature, which would have allowed him to narrow the time of death based on a degrees-lost-per-hour formula.

Without a time-of-death estimate based on body temperature, a medical examiner is aided only by the degree of rigor mortis (the stiffening of the muscles) and lividity (the settling and solidification of blood in the dependent parts of the body). But the rate at which any postmortem phenomenon occurs can vary widely, depending on the size, weight and build of the victim, the external temperature of the body at the time of death and the temperature or conditions of the death scene. Moreover, rigor mortis sets and then disappears, then sets again in the first hours after death; a pathologist would have to examine the body more than once-and hours apart-to a.s.sess the true status of rigor correctly. As a result, detectives seeking time-of-death estimates have become accustomed to working within a spread of six, twelve, or even eighteen hours. In cases where decomposition has begun, the ability of a pathologist to determine time of death is further impaired, although the onerous task of sizing individual maggots taken from the body can often bring the estimate to within a two-or three-day span. The truth is that medical experts can often provide no more than a rough guess as to a victim's time of death; coroners capable of telling Kojak that his victim stopped breathing between 10:30 and 10:45 P.M P.M. are always a source of amus.e.m.e.nt for cops slumped in front of the tube on a slow nightshift.

When Pellegrini and Landsman press the pathologists for the best possible estimate, they are told that their victim appears to be coming out of first-stage rigor and has therefore been dead for at least twelve hours. Given the absence of any decomposition and the extra meal in her stomach, the detectives make their first a.s.sumption: Latonya Wallace was probably held captive for a day, killed on Wednesday night, and then dumped on Newington Avenue in the early hours of Thursday morning.

The remainder of the autopsy is unambiguous. Latonya Wallace had been strangled with a piece of cord or rope, then brutally disemboweled with a sharp instrument, probably a serrated table knife. She sustained at least six deep wounds to the chest and abdomen, suggesting a level of violence and intensity that detectives categorize as overkill. Although the victim was discovered fully clothed, a fresh v.a.g.i.n.al tear indicates some type of molestation, but v.a.g.i.n.al, a.n.a.l and oral swabs come up negative for s.e.m.e.n. Finally, the pathologists note that a tiny star-shaped earring is present in one earlobe but missing from the other. The family would later confirm that she wore two such earrings to school on Tuesday.

Examining the wounds in detail, Pellegrini and Landsman are convinced that the rear of Newington Avenue is not the site of the murder. There was little blood at the death scene, even though the child's wounds were severe and bleeding would have been p.r.o.nounced. The first and most essential question for the detectives is clear: Where was the child murdered, if not in the back alley? Where is the primary crime scene?

As the detectives working the case gather in the homicide office late that afternoon to compare notes, Jay Landsman outlines a scenario increasingly obvious to most of the men in the room: "She's found between the library and her house," says the sergeant, "so whoever took her is from the neighborhood, and she probably knew him if he was able to get her off the street in the middle of the day. He has to take her inside someplace. If you grabbed her off the street in a car, you'd drive her somewhere else; you wouldn't bring the body back into the neighborhood after you killed her."

Landsman also suggests, to general agreement, that the girl was probably murdered within a block or two of where she was dumped. Even in the early morning hours, he reasons, someone carrying the b.l.o.o.d.y body of a child, concealed in little more than a red raincoat, would not want to travel in the open for any great distance.

"Unless he takes her to the alley in a car," adds Pellegrini.

"But then you're back to asking yourself why the guy, if he's already got her in a car, would go and dump her in an alley where anyone could look out a window and see him," argues Landsman. "Why not just drive her out into the woods somewhere?"

"Maybe you're dealing with a goof," says Pellegrini.

"No," says Landsman. "Your crime scene is right in that f.u.c.king neighborhood. It's probably going to be someone who lives in one of the houses in that block who took her right out of his back door ... or it's a vacant house or a garage or something like that."

The meeting, such as it is, breaks down into smaller groups of detectives, with Landsman putting men to work on small, insulated parts of the whole.

As the primary detective, Pellegrini begins reading through the key statements of relatives taken by half a dozen detectives earlier in the day, digesting pieces of the puzzle that fell to the other investigators. Q-and-A sheets from the victim's family members, from some of the child's schoolmates, from the fifty-three-year-old resident of 718 Newington who, on taking out the trash that morning, had discovered the body-Pellegrini scans each page with an eye for an unusual phrase, an inconsistency, anything out of the ordinary. He was there for some of the interviews; others took place before he returned from the autopsy. Now, he is playing catchup, working to stay on top of a case that is expanding geometrically.

At the same time, Edgerton and Ceruti sit in the annex office, surrounded by a collection of brown paper evidence bags containing the jetsam from the morning autopsy: shoes, bloodied clothes, sc.r.a.pings from the victim's fingernails for possible DNA or blood typing, samples of victim's blood and hair for possible future comparisons, and a series of hairs, both negroid and caucasoid, which were discovered on the victim and might or might not have anything to do with the crime.

The presence of foreign hairs is carefully noted, but in Baltimore at least, homicide detectives have come to regard that kind of trace evidence as the least valuable. For one thing, the crime lab can only on rare occasions-usually those involving distinctly colored caucasoid hairs-match beyond any reasonable doubt a recovered strand with a suspect. Particularly with negroid and darker caucasoid hairs, the best that forensic science can do is declare that the same cla.s.s characteristics exist between a suspect's hair and the recovered strand. DNA-genetic coding, which can unambiguously link trace evidence to a single suspect by matching gene characteristics, is now becoming more widely available to law enforcement, but the process works best with blood and tissue samples. To match the DNA coding of human hair to a suspect, at least one entire hair, with its root intact, is needed. Moreover, Landsman and many other detectives have strong doubts about the integrity of trace evidence at the medical examiner's office, where the number of autopsies performed daily in cramped conditions can produce a less than pristine environment. Hairs recovered from Latonya Wallace could just as easily have come from the plastic wrap on the body litter or a towel used to clean the victim prior to the internal examination. They may be hairs from the ME's attendants and investigators, or the paramedics who p.r.o.nounced the victim, or from the last body carted away on the body litter or laid out on the examination gurneys.

Edgerton begins filling in the blanks on the first of a series of lab forms: One red raincoat, bloodstained. One red waist jacket, bloodstained. One pair blue rain shoes. Request blood and trace evidence a.n.a.lysis. Special latent print a.n.a.lysis.

Other detectives collate and catalogue witness statements for the case file or work the typewriters in the admin office, pounding out one report after another on the day's activity. Still other detectives are cl.u.s.tered around the computer terminal in the admin office, punching up criminal records for nearly every name obtained in a preliminary canva.s.s of the north side of Newington's 700 block-a stretch of sixteen rowhouses that back up against the alley where the body was found.

The result of the computer check is itself an education in city living, and Pellegrini, after digesting the witness statements, begins reading each printout. He soon grows weary at the repet.i.tion. More than half of the four dozen names typed into the computer generate a couple of pages of prior arrests. Armed robbery, a.s.sault with intent, rape, theft, deadly weapon-in terms of criminal endeavor, there seem to be few virgins left in Reservoir Hill. Of particular interest to Pellegrini are the half dozen males who show priors for at least one s.e.x offense.