On February 4, 2010, Joseph McStay called his father, Patrick, to say he would be late for a lunch meeting with his business partner. His wife, Summer, had just spoken with her sister. Their sons, four-year-old Gianni and three-year-old Joey, were playing in the yard of their home in Fallbrook, California. Everything seemed so ordinary that no one imagined it would be the last day.
Just after 7:47 p. m. , a neighbor’s surveillance camera recorded a vehicle leaving the house. Then came silence.
No calls, no messages. Nine days later, Joseph’s brother climbed through a window and found popcorn still in bowls, rotting eggs on the counter, and two starving dogs. There were no signs of violence. The family of four had vanished without a word.
Their car was found near the Mexican border. A grainy video appeared to show four people walking toward Tijuana. Police concluded the family had left voluntarily and closed the case. Three years passed in silence.
Then in November 2013, a motorcyclist discovered a small skull in the Mojave Desert, about 100 miles north of their home. Beneath the sand lay four sets of remains in two shallow graves, along with a sledgehammer. Joseph, 40, Summer, 43, Gianni, 4, and Joey, 3, had all been beaten to death. The man who reported them missing, wept for them on television, and claimed to be the last person to see Joseph was the one who had held the hammer.
Joseph Brian McStay was born on November 20, 1969, in Akron, Ohio. He grew up with his brother Michael in an unremarkable household. From a young age, he loved making things with his hands. As an adult, he moved to California and founded Earth Inspired Products, a small company designing and selling decorative indoor water fountains.
Joseph ran most of the business from home, taking orders online, packaging them himself, and occasionally installing them for clients. The work was stable, and Joseph had ambitions to expand. Summer McStay, born Virginia Lisa Aranda on December 27, 1966, in Los Angeles County, was known to those close to her as protective, devoted, and strong. She was a licensed real estate agent, but during those years her primary role was full-time mother and bookkeeper for Earth Inspired Products.
She handled cash flow, invoices, and bank accounts. She had an artistic side and loved decorating the home. No one who knew her doubted she would do anything to protect her children. Gianni was born on July 9, 2005, curious and energetic, always asking why.
Joey, born January 31, 2007, was more attached to his mother but full of affection and loved following his older brother everywhere. Friends and relatives remembered the boys as bright and smiling, often seen playing in the backyard or going to the beach with their parents. In the winter of 2009, the family moved to Fallbrook, a small town in northern San Diego County known as the Friendly Village. Their new home sat on Avocado Vista Lane, a quiet street separated by fences and orchards.
Then entered Charles Merritt. Known to everyone as Chase, he was Joseph’s oldest business partner. Merritt was a professional welder hired to design and fabricate the metal structures for Earth Inspired Products fountains. The relationship went far beyond business.
Joseph considered Merritt a close friend. Merritt sometimes worked at the McStay home, knew the family well, and knew each child’s name. Joseph trusted him enough to grant access to the company’s financial accounts. Joseph even lent Merritt money to pay gambling debts, money Merritt never repaid.
But there were things about Merritt Joseph either did not know or chose not to see. Merritt had a criminal record. In the 1970s and 1980s, he had been sentenced to more than two years in prison for theft, receiving stolen goods, and violating parole. He owed more than $20,000 in unpaid taxes and was in dire financial straits.
He had a serious gambling problem. By early 2010, Merritt owed Joseph nearly $43,000. On January 31, 2010, the family celebrated Joey’s third birthday. Cake, candles, and the laughter of a three-year-old surrounded by his parents and older brother.
Four days later, they vanished. February 4, 2010, began like any other day. Joseph called his father and said he was in a hurry to meet his partner. Nothing in his voice seemed unusual.
Summer also spoke with her sister, who had just had a baby. The couple exchanged text messages around 5 p. m. Nothing out of the ordinary.
Then at 7:47 p. m. , a neighbor’s camera recorded the undercarriage of a vehicle believed to be the family’s white 1996 Isuzu Trooper leaving the driveway. After that moment, Joseph stopped answering his phone.
Summer stopped contacting anyone. Four people disappeared into the California night. In the first days, the family was not overly alarmed. Patrick called, but no one answered.
Michael called too, but the phone went to voicemail. They convinced themselves Joseph was busy or the family had taken a short trip. But Patrick McStay knew his son. Joseph always called back.
With each day, his unease grew. On February 13, nine days after the last contact, Michael drove to Fallbrook. The house was still, the front door locked, no lights on, and the family car absent. He found an open window and climbed inside.
What he found would later be described as signs of a hasty departure. Two bowls of popcorn sat uneaten in the living room. Eggs left on the kitchen counter had rotted. Fresh food had not been put away, as if someone had just brought it home from the store and left it.
The boys’ toys lay scattered. In the backyard, the family dogs were starving. There were no signs of a break-in, no blood, no struggle. The house looked as if the family had simply stood up in the middle of dinner and walked out.
But they had left the dogs, and anyone who knew Summer McStay knew she would never leave them without arranging care. On February 15, 2010, family members reported the family missing to the San Diego County Sheriff’s Department. On February 19, homicide detectives searched the home. Their official conclusion was that there were no signs of a struggle and no clear evidence of a crime.
On February 22, a deputy sheriff publicly acknowledged the disappearance left them puzzled. A thin lead then steered the investigation off course. On February 8, four days after the family disappeared, the white 1996 Isuzu Trooper was found near San Ysidro, right next to the Mexican border crossing. The vehicle had been parked on the street and impounded as abandoned.
For investigators, finding the car there meant something specific: someone had driven to the border and walked across. On March 5, police released surveillance video showing four people, two adults and two small children, holding hands and crossing the pedestrian gate into Mexico. The timestamp matched the day the car was abandoned. Then came what investigators believed was the decisive evidence.
On the family’s home computer, there was a search history from January 28, 2010, for travel to Mexico, passport requirements for children, and how to learn Spanish. Seven days before the family vanished, someone in that house had been searching for how to take young children to Mexico. With the car at the border, the video, and the computer searches, a story took shape. The McStay family had gone to Mexico voluntarily.
No crime, no victims, just a family that chose to leave without telling anyone. The San Diego County Sheriff’s Department accepted that conclusion. They told the media. They stopped searching.
But Patrick McStay refused. He knew his son would not leave the dogs, would not cut off contact, would not take two small children to Mexico without preparation. He looked at the evidence the police called convincing and saw something else. Someone had staged it all.
Someone wanted the world to believe the family had left. The case was handed to the FBI, but in practice it was a transfer of files rather than an expansion of the investigation. The FBI chased hundreds of leads in Mexico, all dead ends. On February 23, 2010, Interpol was notified.
Flyers were distributed along the border. Nothing. While the system looked south, Patrick McStay looked everywhere. He gained access to Joseph’s email and read hundreds of messages.
He called Joseph’s friends, colleagues, and clients. In November 2010, he contacted investigators and reported suspicious activity involving one of Joseph’s business partners. He had found financial transactions moving through company accounts that Joseph could not have approved if he were in Mexico without a phone or computer. Patrick told police he believed someone was using his son’s absence to drain money from the business.
Police logged the tip and did nothing. Patrick later told CBS News he had a list of three people he suspected. “I was exhausted and had lots of information on three possible suspects,” he said. “They all had motive.
” No one listened. Three years passed. The case went cold. No new leads, no new witnesses.
The world moved on. Then came November 11, 2013. A motorcyclist riding through the deserted desert near Victorville, about 100 miles north of the McStay home, stopped when he saw something protruding from the sand. Small, round, white.
A child’s skull. Investigators were called to the scene. They found not one grave but two shallow graves containing multiple sets of remains, four in total. Two adults and two children.
Nearby lay a three-pound sledgehammer. On November 15, 2013, the San Bernardino County coroner identified two of the remains as Joseph McStay, 40, and Summer McStay, 43. The remaining remains were identified as Gianni and Joey. The cause of death for all four was blunt force trauma to the head.
They had all been beaten to death, including Gianni, 4, and Joey, 3, the toddler who had celebrated his third birthday just four days before he vanished. The Mexico theory collapsed completely. The family had not left voluntarily. They had been lying in the desert for three years while the world looked south.
When the San Bernardino County Sheriff’s Department took over in late 2013, they started over. One name kept surfacing. Charles “Chase” Merritt. He had appeared in the investigation as early as 2011, as Joseph’s business partner and the last person to contact Joseph before the disappearance.
He was the one who had called police to report the family missing. But under the Mexico theory, he was treated only as a witness. The new investigators began with Merritt. They found transactions in the QuickBooks account of Earth Inspired Products after February 4.
Someone had printed checks from the company bank account, amounts totaling thousands of dollars, all made out to Charles Merritt. Many of the checks were backdated to February 4, 2010, the day the family disappeared. Someone had tried to create the impression that Joseph had approved the payments before disappearing. Then came one of Merritt’s biggest mistakes.
A QuickBooks customer service employee remembered an unusual call. A man identifying himself as Joseph McStay called and demanded the account be deleted entirely. The employee asked for the security password. The caller did not have it.
The request was denied. The account was not deleted. When investigators traced the phone number used, it did not belong to Joseph McStay. It belonged to Charles Merritt.
He had impersonated a dead man to try to erase evidence of his own theft and failed. Investigators found an email from Joseph dated February 1, 2010, stating that Merritt owed him about $43,000. When they examined Merritt’s personal finances, the money was nowhere to be found. A third business partner, Daniel Kavanaugh, told investigators that Joseph had been planning to fire Merritt.
The prosecution’s theory was that Joseph had discovered unauthorized withdrawals, and on February 4, Joseph met Merritt at a Chick-fil-A not for lunch, but to terminate his employment. A man owing $43,000, addicted to gambling, about to lose his only source of income, and just caught stealing from his partner. That was the motive. More evidence followed.
Phone records showed Merritt’s phone connecting to cell towers near the desert area where the bodies were buried, just two days after the family disappeared. DNA collected from inside the McStays’ Isuzu Trooper belonged to Merritt, directly contradicting his own statement that he had never driven or sat in that vehicle. But perhaps the most chilling detail came from television. In 2014, after the bodies were found but before anyone was arrested, Chase Merritt appeared on a news program.
He expressed sorrow over the family’s loss. Then he said a sentence investigators would replay dozens of times. “I’m pretty sure I was the last person that saw him,” Merritt said of Joseph. Not the last person who spoke to him, but the last person who saw him.
And he spoke of Joseph in the past tense. Then came a detail that would seem invented if it appeared in fiction. Chase Merritt was writing a book about the disappearance. He called Patrick McStay, the father who spent four years searching for his son, and suggested they collaborate.
Patrick later recalled, “He wanted me to read what he was writing. He started reading it to me. He said, ‘Why don’t we do a book together? ’” Patrick played along, hiding his disgust, listening to the man he increasingly believed had killed his son read aloud a draft about the very murder.
In November 2014, about a year after the bodies were found, Charles “Chase” Merritt was arrested and charged with four counts of first-degree murder. The special circumstance of multiple murders made him eligible for the death penalty. He pleaded not guilty and was held without bail. Nearly five years of delays followed before the actual trial began in January 2019.
The prosecution’s entire case was built on circumstantial evidence. There was no direct physical evidence linking Merritt to the sledgehammer or the murder scene. No fingerprints on the weapon. No DNA at the burial site.
No eyewitness. The prosecution argued that circumstantial evidence, when abundant and consistent, can be stronger than direct evidence. The defense argued it was the definition of reasonable doubt. The trial lasted more than four months.
The prosecution presented motive, means, and opportunity. The defense attacked every piece of evidence. If Merritt had beaten four people to death inside the Fallbrook home, where was the blood? No blood was found.
The defense pointed to the two separate graves, arguing a single man alone in the desert would dig one hole, not two. They suggested an alternate suspect. They argued the case was built on speculation and hearsay. On June 10, 2019, after about a week of deliberations, the jury returned its verdict.
Guilty on all four counts of first-degree murder. The jury also found the special circumstance of multiple murders true. On June 24, 2019, the jury recommended three death sentences for the murders of Summer, Gianni, and Joey, and life without parole for the murder of Joseph McStay. The inconsistent sentence later became a subject of legal controversy.
At the sentencing hearing in January 2020, the victims’ family spoke. Susan Blake, Joseph’s mother, called Merritt a child killer who destroyed her family. Michael McStay, who had climbed through the window and found the empty house, told Merritt he had stolen four beautiful lives. A family member of Summer said the children would never grow up together.
Her ex-husband told Merritt, “I don’t forgive you. On the contrary, I want to destroy you psychologically. ” Patrick McStay stood before the court as a father ten years later, his presence saying more than words. Merritt, in turn, insisted he was innocent.
He said he loved Joseph and would never have hurt a woman or children. He claimed he had been framed. On January 21, 2020, the judge upheld the jury’s recommendation and sentenced Merritt to death. The judge described the killings as horrific and inhumane, emphasizing the brutality inflicted on the two small children beside their parents.
Merritt was taken to death row. In practice, California has carried out no executions since 2006, and the death penalty moratorium issued by Governor Gavin Newsom in 2019 means Merritt will almost certainly never face lethal injection. He will die in prison, but of time, not of the sentence. The case left more than a verdict.
The Mexico theory, built on one grainy video, computer searches likely made by the killer himself, and an abandoned car, wasted more than three years. The San Diego County Sheriff’s Department accepted the easy answer instead of the correct one. The price of that comfort was nearly half a decade of delayed justice. And it left a lesson about trust.
Charles Merritt was not a stranger. He was Joseph’s close friend and business partner, the man invited into the home, trusted with bank accounts and accounting records. Joseph lent him money for gambling debts. Joseph called him a friend.
Merritt used that trust as a weapon. He knew the family’s schedule, how to enter the house, the account passwords, and the road to the desert. Then he wept on television, wrote a book, and called the victim’s father to propose they collaborate. Sometimes the deadliest threat does not knock at the door in the middle of the night.
It sits across from you at a restaurant and calls you a friend.