On the morning of Monday, April 6, 2009, a small crew of farm workers drove out to an irrigation pond on a dairy farm about two miles north of Sandra Cantu’s home in Tracy, California. It was routine work. The pond sat at the corner of two quiet country roads, Betty Road and Whitehall Road, surrounded by flat fields. Every so often it had to be drained.

So the workers did what they always did. They started the pumps and watched the brown, still water slowly sink away. As the level dropped, the reeds at the edges came out of the water. Then the mud.

Then, near the bottom, something that did not belong there. A suitcase. It was black. It was large.

It was heavy. It had been tied shut with a cord. The workers stopped. They did not open it.

They called the police. When investigators did open that suitcase, they found a small pink t-shirt with Hello Kitty on the front and a pair of children’s Hannah Montana slippers. The same pink Hello Kitty t-shirt that had been described over and over on every news broadcast in America for the previous ten days. Inside the suitcase was Sandra Cantu.

She was eight years old. She had been missing for ten days. The search for her was over. But the real question was only beginning, because a suitcase does not walk to a pond on its own.

Somebody had chosen that suitcase. Somebody had tied that cord. Somebody had driven out into the farmland and pushed it into the water. And the answer to who that somebody was had been sitting in front of the investigators almost from the very first night.

It was closer than anyone in Tracy could have imagined. It had been inside the gates of Sandra’s own neighborhood the whole time. It had walked with the searchers. It had stood at the vigils.

And it had even, in its own strange way, tried to tell them where to look. This is the story of those ten days. Of a little girl who skipped out of her front door on a Friday afternoon and never came back. Of a community that searched every field and canal for a stranger.

And of the small, ordinary clues—a stolen suitcase, a handwritten note, a missing piece of cord from a window blind—that finally led investigators to the truth. In the ten days between Sandra’s disappearance and that suitcase rising out of the water, one person in her neighborhood did five strange things. Five moments, all of them on the record, that pointed to what had really happened. Investigators saw every one of them, and for ten days they did not put them together.

And there is one more thing to hold on to. Sandra was not the first little girl from her park to go missing for an afternoon that year. Ten weeks earlier, another child from the same park was driven away and came home hours later drowsy, slurring her words, with a sedative in her blood. Somebody told the police.

That report would matter more than anyone knew at the time. Sandra Renee Cantu was born on March 8, 2001, in Tracy, California. When she disappeared, she had been eight years old for less than three weeks. She lived with her mother, Maria Chavez, her grandparents, and her three older brothers and sisters in a mobile home in a community called Orchard Estates on the edge of Tracy.

Her father, Daniel Cantu, was part of her life too. She was the youngest of the children, the baby of a big, busy, crowded household. She was in the second grade at Melville S. Jacobson Elementary School, a short way from home.

The people who knew Sandra remembered a lively, sociable, energetic little girl. She had friends all over the park, and she spent her afternoons going from one home to the next, knocking on doors, asking whether her friends could come out to play. She was the kind of child who was always on her way somewhere, always looking for someone to play with. There is a photograph of Sandra that almost every family in America saw in the spring of 2009.

A little girl with light brown hair, smiling a wide, gap-toothed smile at the camera. It is the kind of picture every family keeps. A school photograph, a childhood looking straight out at you with no idea that one day millions of strangers would know her face. To the country, she became the girl in that photograph.

To her family, she was simply Sandra, the youngest, the one who was always running out the door to find a friend. Tracy is a city of around 80,000 people in California’s Central Valley, about sixty miles east of San Francisco. It sits at the edge of a great, flat plain of farmland where the Bay Area’s commuters meet the fields and orchards of San Joaquin County. Many of the people who live there drive over the hills to work every morning and drive home every evening to a quieter, more affordable place to raise their children.

Orchard Estates mobile home park was one of those quieter places. A community of manufactured homes with a single entrance and exit, with neighbors who knew each other and children who played together outside. In a place like that, a child running from one home to another is not unusual. It is the whole point.

Parents let their children roam a little because the park feels safe. Because everyone knows everyone. Because, as families would say again and again in the days that followed, nothing like this ever happened there. The park had a gate.

It had, in effect, one way in and one way out for cars. And all around it lay the open farmland of the valley, long straight roads running between the fields, and running through those fields a network of canals and irrigation ponds. Still water in a dairy drainage pond a couple of miles from the edge of town. That layout—a closed community with one way in and out—would matter more than anyone realized.

On Friday, March 27, 2009, Sandra came home from school and went out to play. She spent part of the afternoon at a friend’s house. Then she went home, and not long after, she went out again. She told her family she was going to another friend’s house.

It was the most ordinary thing in the world. Near her family’s home, a surveillance camera was recording. At six minutes to four, it caught Sandra skipping across the road in front of her house. She was wearing a pink Hello Kitty t-shirt and black leggings.

She was happy. She was in no hurry. Within a few seconds, she skipped out of the camera’s view. That footage would later be broadcast around the world, and it held a detail that investigators would come to think about again and again.

Sandra was not walking toward the park’s exit. She was walking away from it, deeper into the park, toward the homes of her neighbors. Prosecutors would later say that this was the last image of Sandra Cantu alive. As the afternoon went on, Sandra did not come home.

At first, nobody worried. She was always at somebody’s house. But when dinner time came and went and Sandra still had not appeared, her family began to look. They went door to door.

They asked the neighbors. They walked the streets of the park calling her name. They rang the children she usually played with. Nobody had seen her.

At 7:53 that evening, Sandra’s mother called the Tracy Police Department. In the first minutes, a call like that can sound like a small thing. A child who has wandered off. A child who is at a friend’s house and forgot to say so.

Most of the time, that is exactly what it is. But the officers who arrived at Orchard Estates that evening quickly understood that this was different. Sandra was not at any of her friends’ homes. She was not anywhere in the park.

And the officers began to think about the layout. A gated park, fields and canals all around. If Sandra had left on foot, somebody would surely have seen a little girl in a pink t-shirt walking along a country road. If she had not left on foot, then either she was still somewhere inside the park or someone had taken her out of it.

Either way, time was the enemy. The officers began searching the park that night. They walked the streets with flashlights. They checked the common areas, the laundry rooms, the narrow spaces between the homes.

They knocked on doors and asked every resident they could find whether they had seen a little girl in a Hello Kitty shirt. Nobody had. By the morning of Saturday, March 28, the search for Sandra Cantu had grown into something enormous. The FBI joined the investigation.

Search dogs were brought in to follow Sandra’s scent. Teams on horseback rode through the fields around the park. Volunteers went out on all-terrain vehicles. A California Highway Patrol helicopter circled overhead, scanning the farmland and canals from the air.

Hundreds of volunteers arrived to help. People from the park, people from across Tracy, people who had never met the Cantu family but had seen her photograph on the news and could not bear to sit at home. They gathered at a command post near the park, picked up flyers with Sandra’s picture on them, and fanned out across the city. They stapled the flyers to telephone poles and taped them in shop windows.

They walked the fields and the roadsides in long lines. They searched under bridges and along the edges of the canals. A reward was offered for information leading to Sandra’s safe return. It grew, as people and businesses added to it, to as much as $26,000.

Then, a week later, on April 4, the police released the footage. It was only eighteen seconds long. A grainy image of a small girl skipping across a road. But it changed the case.

Local stations showed it. Then national networks picked it up. Within a day or two, the image of Sandra Cantu skipping happily out of the frame was being played in living rooms across the United States. It was almost impossible to watch.

A child perfectly happy, perfectly safe, skipping along in the afternoon light. And then the frame ends, and she is gone. People all over America found themselves asking the same question: what happened in the moments after that camera lost sight of her? Investigators looked first where experience told them to look.

They looked for a predator. Officers went to the homes of registered sex offenders in and around Tracy and asked where they had been that Friday afternoon. One by one, they were accounted for. One early suspect was a local man who had once been reported for kissing Sandra on the lips at a swimming pool two years earlier, when she was six.

Detectives found him and questioned him closely. He was investigated, and he was cleared. The FBI’s profilers put together a picture of the person they believed they were looking for. Most likely a man, probably white, probably between twenty-five and forty years old, very likely someone with a past history of sexual offenses or of possessing images of child abuse.

That was the pattern in so many cases like this. It was a reasonable place to start. It would turn out to be completely wrong. Inside the park, the atmosphere changed almost overnight.

The noise never stopped. Helicopters overhead, dogs barking, police cars at the gate, television vans parked along the road outside. And among the families of Orchard Estates, a feeling began to grow that nobody wanted to say out loud. Sandra had been walking deeper into the park when the camera last saw her.

Not toward the road. Not toward the gate. Toward the homes of her neighbors. If she had not left on foot, and nobody had seen her leave, then the person who took her might not have come from outside at all.

The person who took her might be one of them. Neighbors began looking at each other differently. Parents who had always let their children run between the homes now kept them inside or walked them to school holding their hands. Every family in the park was asked where they had been.

Every home was a place someone might have hidden a child. In that close, frightened little community, among the many people helping with the search and talking to the police in those first days, there was one neighbor who stood out. Not as a suspect. Not then.

Just as someone who seemed to be everywhere. She was a young mother. She lived in the park a few doors from Sandra—across the street and a few houses down. Her own little daughter was one of Sandra’s playmates.

Sandra had been to that home many times. And this young mother taught Sunday school at a small Baptist church close to the park, a church where her own grandfather was the pastor. In the ten days after Sandra disappeared, she did the five things that pointed to the truth. At the time, each one seemed odd, but not sinister.

The first thing happened on that very Friday afternoon, within minutes of Sandra going missing. The same day, this young mother sent a text message to Sandra’s mother. It asked her to tell the police that something had been stolen from her that day at around four o’clock. Shortly after four, she called the manager of the mobile home park.

She reported that a suitcase had been stolen from her home. An Eddie Bauer suitcase, on a day when a child had vanished. A stolen suitcase seemed like the smallest of things. A neighbor reporting a petty theft on the worst day the park had ever known.

If anything, people thought it might be a clue that someone suspicious had been around the park that afternoon. A thief, perhaps. A stranger. Maybe the same stranger who had taken Sandra.

Nobody yet thought to look at it the other way round. The second thing happened the next evening, and it was the strangest of all. On Saturday, March 28, there was a vigil in the park. People gathered with candles.

They prayed for Sandra’s safe return. During that vigil, the same young mother went to the police and the FBI agents with a piece of paper. She said she had found it in the park. It was a handwritten note.

The spelling was poor, and what it said made the agents who read it stop. It said that Cantu had been locked in a stolen suitcase—spelled “stolin”—and thrown in the water on Betty Road and Whitehall Road. At the end it said one more word: witness. She had been crying when she handed it over.

She told them she had found it tucked into a wall. A suitcase. Water. Two country roads outside Tracy.

Only after the body was found in a suitcase that this woman had reported stolen did investigators start to find it strange that she was the one who had come across the note. But in a case like this, with the whole country watching, the police receive dozens of tips and messages every day. Some come from well-meaning people who are confused. Some come from cruel people who want to hurt the family.

Some come from people who are drawn to the drama of a terrible event and want to be part of it. The search went on across all of Tracy and the land around it. Later, prosecutors would say that the handwriting on that note looked very much like her own. The third thing happened two days after Sandra disappeared.

This young mother invited Sandra’s older sister, Miranda, to spend the night at her home with her own little daughter. It looked like the kind of thing neighbors do in a crisis. Take some of the weight off a frightened family. Give a girl somewhere to be while the adults dealt with the police and the cameras.

Miranda would later describe that night to a grand jury. And she remembered something. In all that time, the woman only brought up the disappearance once. And when she did, it was to ask one question: had the police found any evidence?

Nobody thought anything of it at the time. It was only much later, when the grand jury transcripts were made public, that people learned about that night and understood what that question might have meant. The fourth thing happened as the days went on. She kept appearing at the vigils, among the searchers, talking to the police, talking to reporters.

Of all the families in the park, she seemed to be the one most drawn to the search. The one who always seemed to be near it. The fifth thing happened on Saturday, April 4, the eighth day. By then, the search had spread out into the countryside.

Teams were looking at the ponds and canals around Tracy. On that Saturday, this young mother was taken to hospital. She had swallowed a razor blade. She would later tell investigators that it was an accident, that she had swallowed it while sleepwalking.

Two days later, the irrigation pond at Betty Road and Whitehall Road was drained. That is five. A suitcase reported stolen within the hour. A note that named a place.

A question to the missing girl’s sister. A woman who could not stay away from the search. A razor blade two days before the water came down. Through all of it, Sandra’s family kept going.

They kept speaking to the cameras. They kept saying her name. They told reporters they believed she was still alive, that somebody somewhere had her, that she would come home. They held her photograph up in front of the microphones and asked the world to keep looking.

At the vigils in the park, people lit candles and prayed for a little girl in a pink Hello Kitty t-shirt. Then came Monday, April 6, the tenth day. The irrigation pond. The pumps.

The suitcase rising out of the mud. When the news reached Orchard Estates that afternoon, it broke the community. For ten days, people had held on to hope. They had told themselves and each other that she might still be alive.

Now that hope was gone, replaced by something worse, because whoever had done this was still out there. And now everyone knew what they were capable of. Yet for the investigators, the discovery changed everything, because they now had something they had not had for ten days. They had physical evidence.

And almost at once, it began to point in one direction. Start with the place. The pond where the suitcase was found sat at the corner of Betty Road and Whitehall Road. That was not a random spot in the countryside.

It was the exact location written on the note. The note that had been handed to investigators at the vigil nine days before anyone knew where Sandra was. Whoever had written that note had known where she was before the police did. Then the suitcase itself.

It was an Eddie Bauer suitcase. The same brand of suitcase that the young mother had reported stolen on the afternoon Sandra disappeared. In the days after the discovery, she told a reporter that the suitcase was hers. She said it had been stolen from her driveway.

Then there were her messages. On the day the suitcase was found, before the police had said anything in public about what had been done to Sandra, this young mother sent text messages to her grandmother. One said that she had seen the news, call it a crime scene. Another said she hoped Sandra had not been sexually assaulted.

Nobody had said a word about that yet. And then the cord. The suitcase had been tied shut with a length of cord—a thin, braided cord of the kind used to raise and lower a window blind. Investigators would later find a blind connected to this woman with a piece of its draw cord missing.

When the coroner examined Sandra, the findings were terrible, and they shaped everything that followed. She had a cut to her lower lip and a scrape on her left elbow. There was a bloodstained cloth tied around her head. She had injuries showing that she had been sexually assaulted with an object.

The cause of death was recorded as homicidal asphyxiation. She had been suffocated. And the toxicology tests found something else. In Sandra’s body, there was a drug called alprazolam.

It is a prescription medicine used to treat anxiety. It is a sedative. It makes people drowsy, confused, and unable to resist. There were also traces of rubbing alcohol.

Sandra had been drugged. That changed the picture of the crime. A child snatched off the street by a stranger in a sudden act of violence is not usually drugged first. Drugging a child takes planning.

It takes access to medication. It takes a private place, and time, and a child who trusts you enough to swallow something you give her. It suggested someone Sandra knew. Someone she would have gone with willingly.

Someone whose home she had been to many times before. The investigators built a timeline from everything they now had. It was shocking in how short it was. Sandra was last seen on camera at six minutes to four.

Eight minutes later, the park’s surveillance cameras recorded a purple Kia Sportage—a small sports utility vehicle—driving out of the park, heading the opposite way. Prosecutors would later say they believed Sandra had died within about eighty-five minutes of that last piece of footage, and that by six o’clock in the evening, her body was already in the pond. By the time Sandra’s mother picked up the telephone at 7:53 to report her missing, Sandra had already been dead for some time. The helicopters, the dogs, the horses, the hundreds of volunteers, the reward, the footage on national television.

All of it had happened after it was already too late. And the purple Kia Sportage belonged to the young mother from across the street. Her name was Melissa Huckaby. She was twenty-eight years old.

She had been born Melissa Lawless in Orange County, in Southern California, in February 1981. She lived in Orchard Estates with her grandparents and her young daughter, across the street and about five houses down from the Cantu family. Her grandfather, Clifford Lane Lawless, was the pastor of the Clover Road Baptist Church near the park. Melissa taught Sunday school there.

To the people of Orchard Estates, she was a young mother, a churchgoer, a neighbor whose child played with their children. In the ten days since Sandra disappeared, she had been interviewed more than once, along with many other neighbors. She had never been treated as a serious suspect. She was a woman.

A mother. A Sunday school teacher. She was the opposite of the profile. Now, in the days after the suitcase was found, the investigators went back over everything she had said and done.

Piece by piece, the case against her came together. The first piece came from two strangers. A retired United States Marine and his wife came forward with something they had seen on the afternoon of Friday, March 27. They had been near the pond at Betty Road and Whitehall Road sometime between five and six in the evening, and they had seen a woman there, next to a sports utility vehicle, beside the water.

The man later described her as distracted and in a hurry. He spoke to her. When he asked what she was doing there, she gave him an explanation. She told him she had just stopped because she had to pee.

The couple recognized her. The woman they had seen beside the pond at the place where Sandra’s body was dumped was Melissa Huckaby. The second piece came from the church. Security cameras at the Clover Road Baptist Church had recorded Melissa Huckaby that afternoon.

The recordings showed her at the church, then leaving, and then coming back about half an hour later. The thirty minutes she was gone lined up with the time the Marine and his wife saw her standing beside the pond. The third piece was found inside the church itself. FBI agents searched the building, and inside they found a rolling pin.

A rolling pin from the church kitchen. Its handle was bent, and on it there was a small bloody smudge. The laboratory tested the blood. It was Sandra’s.

The coroner had found injuries consistent with the handle of a rolling pin. Now investigators had that rolling pin, with Sandra’s blood on it, inside the church where Melissa Huckaby taught Sunday school. The fourth piece was the cord. The suitcase had been tied shut with braided cord from a window blind.

Investigators found a blind connected to Melissa Huckaby with a piece of its draw cord missing. An FBI expert on cords and ropes examined both, and concluded that the missing piece of cord from that blind was consistent with the cord that had been used to tie the suitcase shut. The fifth piece was in her car. Investigators found a yellow sticky note there.

Written on it was the address of the irrigation pond. The sixth piece was the drug. The alprazolam found in Sandra’s body was a prescription drug. And investigators found bottles of that same medication in Melissa Huckaby’s home and in her purse.

And then there was the note. The note that had told the police, nine days before anyone else knew, that Sandra was locked in a stolen suitcase in the water at Betty Road and Whitehall Road. Melissa Huckaby had said she found it in the park. Prosecutors would say that the handwriting on it resembled her own.

She had reported the suitcase stolen on the afternoon Sandra vanished. She had handed the police a note naming the exact place where it would be found. She had told a reporter that the suitcase was hers. Every one of those things, which she seemed to have done to steer the investigation away from herself, had in the end pointed straight back at her.

On Friday, April 10, 2009, four days after the suitcase was found, Melissa Huckaby drove herself to the Tracy police station. She went in voluntarily to answer more questions. By then, she had already given an interview to the local newspaper, the Tracy Press. She had told them that the suitcase was hers, and that it had been stolen on March 27, the day Sandra disappeared.

The police said that what she told the newspaper did not match what she had told them earlier. A police spokesman, Sergeant Tony Sheneman, put it simply. She had admitted, he said, both to them and to the Tracy Press, that the suitcase was hers. Nearly six hours after she walked into the station late on that Friday night, Melissa Huckaby was arrested.

She was charged with the murder of Sandra Cantu, with kidnapping, with rape using a foreign object, and with performing a lewd act on a child. She was held in the San Joaquin County Jail with no bail. The police would not say how or where they believed Sandra had been killed. But Sergeant Sheneman said there were no other suspects.

And he said something about the church that made people think. Melissa Huckaby, he said, had spent an extraordinary amount of time there. The Clover Road Baptist Church stood about five hundred yards from her home. After the police searched it and took away evidence, its doors were closed.

Public records soon showed that Melissa Huckaby was not quite the spotless churchgoer people had thought. In November 2006, in Los Angeles County, she had been convicted of petty theft. Her family were stunned. A relative told reporters they were deeply saddened by the loss of a beautiful little girl and that the charges were completely out of character.

A family friend said simply that this was not the Melissa she knew. Sandra’s aunt, Angie Chavez, said the family was shocked that the person accused was a woman, and she said what everyone in Tracy was asking. The family wanted to know why. Sergeant Sheneman had no answer for her.

He told reporters he could not even begin to theorize what the motive was. The news went around the world in hours. The person who had taken the little girl from the security footage was not the stranger the whole country had imagined. Not a predator from outside.

Not a man in a van on a country road. It was a young mother from across the street. A Sunday school teacher. The granddaughter of the local pastor.

A woman whose own daughter played with Sandra. For the people of Orchard Estates, it was almost impossible to take in. They had searched beside her. They had stood beside her at vigils.

Their children had played with her child. Sandra’s own sister had spent a night in her home. For ten days, the whole park had been afraid of a monster who had come in from outside. All that time, the person responsible had been inside the gates with them, a few doors away.

When the police questioned Melissa Huckaby, her story changed. At first, she told them she had had nothing to do with it. She kept to that through hours of questioning, even as the evidence piled up in front of her. One of the detectives, Nate Cogburn, would later tell the grand jury that she was someone who thought she could always explain her way out of situations.

Then the story changed. She said there had been a game—hide and seek with her daughter. She said Sandra had climbed into the suitcase to hide, and that she had zipped it shut. She said she had then forgotten about her, and that when she came back, Sandra was dead.

She said she had panicked, freaked out, and driven the suitcase to the pond. And the razor blade that she had said was an accident? She had swallowed it in her sleep. The evidence told a very different story.

A child does not end up drugged with a prescription sedative by accident. A child does not end up with a bloodstained cloth tied around her head by accident. A rolling pin with her blood on it does not end up in a church by accident. A suitcase does not tie itself shut with a cord from a window blind and drive itself to a pond in the countryside.

Investigators did not believe her. Neither, in the end, would the court. In July 2009, before the grand jury, the forensic pathologist Dr. Bennet Omalu gave evidence about what had been done to Sandra.

He told the grand jury that Sandra had suffered before she died. He said the way she had been packed into the suitcase did not look like panic. It looked like planning. It showed, he said, a calm, calculating mind at work.

A game gone wrong does not look like that. A panic does not look like that. In the months after her arrest, more about Melissa Huckaby’s life came out. She had a long history of mental health problems.

She had been diagnosed with bipolar disorder and post-traumatic stress disorder, and other reports described borderline personality disorder. She told a probation officer that her childhood had been rough and that she had been the victim of a serious assault when she was nineteen. Her own family said she had struggled with depression for years and had a history of hurting herself. None of that excuses what she did, but it shows a life that had been going wrong quietly for a long time, out of sight of the families who lived around her.

Then, ten days after the arrest, came the report from the beginning. On January 17, 2009, ten weeks before Sandra disappeared, there was an entry in the Tracy police logs. It described a seven-year-old girl from Orchard Estates, the same park. According to the log, a woman driving a purple Kia Sportage had taken the girl out of the park that afternoon.

They were gone for around four hours, from about one until after five. When the little girl came home, her family said her speech was slurred and she kept falling asleep. They took her to Sutter Tracy Memorial Hospital, and a doctor there found a sedative—a benzodiazepine—in her blood. The same family of drugs that would later be found in Sandra.

The girl’s family said she had spent that afternoon with Melissa Huckaby without their permission. The police were told. They wrote it down. No one was arrested.

The police said later that there had simply been no probable cause to make an arrest. Ten weeks later, Sandra Cantu skipped across the road toward the homes of her neighbors. Prosecutors would later charge Melissa Huckaby over that January afternoon, and over the drugging of a thirty-seven-year-old man as well. Both of them survived.

The court kept the seven-year-old girl’s name sealed to protect her. The prosecutor in the case, Thomas Testa, would later describe those two earlier incidents as practice attempts. That, Testa said, was what he believed they were. It is worth stopping for a moment on why investigators did not see her sooner.

It was not because nobody spoke to her. They did, more than once. It was because she did not look like the person they had been taught to search for. Everything investigators know about crimes like this pointed them toward a man.

Toward a stranger, or a known offender, or someone with a history of violence against children. Women are rarely responsible for crimes like this one. A young mother who taught Sunday school did not fit any pattern the profilers had. And there was something else.

Melissa Huckaby did not hide from the investigation. She did the opposite. She reported a theft. She texted Sandra’s mother.

She produced a note. She talked to reporters. She opened her home to Sandra’s sister. She put herself in the very middle of the case.

At the time, investigators read that as the behavior of someone hungry for attention, someone drawn to the drama of a terrible event. This time it was not harmless. This time the person who could not stay away from the case was the person who had caused it. Through the rest of 2009 and into 2010, the case moved slowly through the courts in San Joaquin County.

On April 14, 2009, Melissa Huckaby was arraigned in a courtroom in Stockton. The prosecutor told the court that if she were convicted of the special circumstances in the case, she would face either the death penalty or life in prison without parole. That decision, he said, would come later. In August 2009, a grand jury indicted her.

She pleaded not guilty. In September 2009, the decision came. The San Joaquin County District Attorney announced that his office would seek the death penalty. The prosecutor, Thomas Testa, called it a momentous decision.

Melissa Huckaby showed no reaction in court. The judge in the case, Linda Lofthus, had already placed a gag order on the lawyers and police back in April, at the arraignment, and much of the evidence was kept sealed while the case was pending. Sandra’s family waited. They went to the hearings.

They sat in the courtroom and looked across at the woman accused of killing her. A woman who had lived a few doors away, whose little girl had played with theirs, in whose home their older daughter had slept. Then, in May 2010, a little over a year after Sandra’s death, it ended without a trial. On May 10, 2010, Melissa Huckaby appeared in court in Stockton and pleaded guilty.

She pleaded guilty to the first-degree murder of Sandra Cantu, with the special circumstance of kidnapping. Under the plea agreement, the other charges against her—including the sexual assault charges and the charges involving the earlier druggings—were dropped. In return, the prosecution agreed not to seek the death penalty. The sentence was fixed by the agreement: life in prison without the possibility of parole.

On Monday, June 14, 2010, in a courtroom in Stockton, Melissa Huckaby was sentenced. Sandra’s family were there. Before the sentence was passed, they played a video for the court. It was a montage of Sandra’s life.

Pictures of a baby, and a toddler, and a little girl in her school clothes. Birthdays. That wide, gap-toothed smile. A short life set to music, played in a courtroom in front of the woman who had ended it.

Then the family spoke. Sandra’s father, Daniel Cantu, spoke about how young she had been. She was, he said, not even old enough to decide to eat ice cream yet. And he spoke directly to the woman who had killed her.

All he could say, he told her, was to repent and to think about what she had done. Sandra’s aunt, Angie Chavez, spoke about what the family had lost. She said that Melissa Huckaby had robbed them of the chance to watch Sandra grow up. She spoke about the pain of knowing how close to home Sandra had been that afternoon, and that nobody had been able to protect her.

The only comfort the family had, she said, was knowing that Melissa Huckaby would never be able to do this to anyone else. Then Melissa Huckaby spoke. She apologized. She said that she should not have taken Sandra.

She said that Sandra had not suffered. She said that she had not sexually molested her. She said that she had loved Sandra, and she asked Sandra’s mother for forgiveness. And she said that she still could not understand why she had done what she did.

She gave no reason. She offered no motive. After more than a year, Sandra’s family stood in that courtroom and heard the woman who killed their daughter say that she did not know why. The prosecutor, Thomas Testa, did not accept her account.

He said he found it very hard to believe that Sandra had not suffered. And he offered a theory of his own, one he could not prove: that the crime, and everything Melissa Huckaby did around it—the suitcase she reported stolen, the note, the interviews, the place she made for herself at the center of the search—may have been driven by a need for attention. Huckaby never confirmed it. Melissa Huckaby’s own mother spoke as well.

She said that she had felt the Cantu family’s pain, and that if she could, she would give Sandra back to her mother. Then the judge passed the sentence the agreement required: life in prison without the possibility of parole. Melissa Huckaby was twenty-nine years old. She will never be released.

On the day of the sentencing, in a separate hearing that afternoon, Judge Lofthus agreed to release many of the sealed records. Sandra’s family fought the release. They were afraid of what the details would do to them, and they asked for more time. But later that week, nearly two thousand pages of grand jury transcripts were made public.

Only the identity of the seven-year-old girl and the autopsy photographs stayed sealed. Sandra’s uncle, Joe Chavez, was furious with the news organizations that had pushed for the release. He called it irresponsible journalism run amok. It was in those pages that people learned about the night Sandra’s sister spent at Melissa Huckaby’s home and the one question she asked, and about the story Melissa Huckaby had told the police of a game, and a suitcase, and a child she said she forgot.

The pages answered many questions about how. They answered almost none about why. That question has never been answered. The prosecutor, Thomas Testa, said there were so many unanswered questions that we will never know.

In the years since, Tracy has not forgotten Sandra Cantu. In the city, she came to be known as Tracy’s Angel. Her school, Jacobson Elementary, built a playground in her memory—the Sandra Cantu playground—a place for the children who came after her to run, climb, and play the way she had. There is a little building at the school called Sandra’s Cottage, and there are Sandra Cantu buddy benches.

A child who feels lonely at break time can sit on one, and the other children know to come over and ask them to play. It is a fitting memorial for a little girl who spent her whole short life going from door to door asking her friends to come out. In 2011, one of Sandra’s relatives and a local organizer started an event called Tracy Celebrates Children. Once a year, the whole city comes together for a free day of games and activities for its children.

A day of play, in memory of a girl who loved to play. The case of Sandra Cantu is remembered for many reasons. It is remembered for that footage. A few seconds of a little girl skipping across a road, shown on every television in America, which became one of the most haunting images of any missing child case of its time.

It is remembered for the suitcase, and the pond, and the ten days of searching that ended in a place only a few miles from home. It is remembered as a lesson for investigators, a reminder that the profile is not the person. That the danger to a child does not always come from a stranger, or from the kind of person we have been taught to fear. That sometimes it comes from inside the gates.

From someone trusted. From someone ordinary. From someone standing at the vigil with a candle in her hand. And it is remembered as a case where the truth was hidden in plain sight from the very first day.

A suitcase reported stolen within the hour. A text message to the girl’s own mother. A note that named the exact spot nine days before anyone looked there. A question to the missing girl’s sister.

A razor blade two days before the pond was drained. Two strangers beside a country road who happened to look up at the right moment. A missing piece of cord from a window blind. Every one of those clues pointed at the person who had placed them.

It took a suitcase rising out of the mud for everyone to see them for what they were. But in Tracy, it is remembered above all for Sandra. Not for how she died, but for who she was. A little girl of eight who had just had her birthday.

The youngest in a big, loving family. A girl in a pink Hello Kitty t-shirt. A girl who spent her afternoons running between the homes of her friends, in a place where every parent believed their children were safe. On Friday, March 27, 2009, at six minutes to four in the afternoon in Tracy, California, a security camera recorded Sandra Cantu skipping across the road on her way to see a friend.

She was happy. She was in no hurry. She had no idea who was waiting for her a few doors away.

Sandra Renee Cantu.