The Laci Peterson Case — Pregnant Woman's Murder in California

The Case

The Laci Peterson case is a California homicide involving the murder of 27-year-old Laci Denise Peterson and her unborn son Conner in December 2002. Laci's husband, Scott Lee Peterson, was convicted of first-degree murder with special circumstances for killing Laci and second-degree murder for Conner's death. The case captivated national attention due to the circumstances surrounding the disappearance of a pregnant woman on Christmas Eve and the subsequent discovery that her husband had been leading a secret double life. While Scott Peterson was convicted by jury verdict in 2004, he has continued to contest his conviction through various appeals and post-conviction proceedings.

The Crime

On the morning of December 24, 2002, Scott Peterson reported his wife Laci missing from their home in Modesto, California. He told police that Laci, who was eight months pregnant with their son they planned to name Conner, had gone for a walk with their dog in nearby East La Loma Park. Scott claimed he had spent the day fishing alone at the Berkeley Marina in San Francisco Bay, approximately 90 miles from their home.

Prosecutors would later argue that Scott Peterson killed Laci on the night of December 23 or the morning of December 24, 2002. According to the prosecution's theory presented at trial, Peterson murdered his wife in their Modesto home and transported her body to his warehouse. He then loaded her remains into his newly purchased boat and drove to the Berkeley Marina, where he dumped her body into San Francisco Bay. To ensure the body would sink and remain hidden, prosecutors alleged that Peterson created homemade concrete anchors which he attached to Laci's wrists and ankles.

The prosecution contended that Scott's motive for the murder stemmed from his desire to escape the responsibilities of marriage and impending fatherhood. During the investigation, detectives discovered that Scott had been having an affair with a massage therapist named Amber Frey, whom he had told he was unmarried and had "lost his wife" weeks before Laci actually disappeared.

The Victims

Laci Denise Peterson was 27 years old at the time of her death. She had been married to Scott Peterson since 1997, and the couple had settled in Modesto, California, where they purchased a home. Friends and family described Laci as vibrant, social, and excited about becoming a mother. She worked as a substitute teacher and was actively preparing a nursery for her baby's arrival.

Conner Peterson was Laci's unborn son, due to be born in February 2003. Laci was approximately eight months pregnant when she disappeared. The couple had already chosen the name Conner and had shared their excitement about becoming parents with friends and family. Under California law at the time, the killing of a fetus could be prosecuted as a separate homicide, leading to the second-degree murder charge for Conner's death.

Investigation

The investigation into Laci's disappearance began immediately on Christmas Eve 2002, when Scott reported her missing. Modesto Police Department launched an extensive search effort involving hundreds of volunteers who scoured parks, neighborhoods, and surrounding areas. Early in the investigation, detectives began to focus on inconsistencies in Scott Peterson's statements and his suspicious behavior.

A major break in the case came when investigators discovered Scott's affair with Amber Frey. Frey contacted police in late December 2002 after recognizing Scott from news coverage of Laci's disappearance. She cooperated fully with investigators and allowed police to record her subsequent phone conversations with Scott. These recordings revealed Scott's deceptions and provided insight into his state of mind during the period when his wife was missing.

Investigators also discovered that Scott had purchased a fishing boat just weeks before Laci's disappearance, despite having shown little previous interest in fishing. A homemade concrete anchor was found in Scott's boat, and remnants of concrete matching the anchor material were discovered in his warehouse. Significantly, one concrete anchor was missing from the set Peterson had created.

On April 13, 2003, the body of a full-term male fetus washed ashore on the San Francisco Bay near Richmond. The following day, the badly decomposed remains of an adult female were discovered about a mile away. DNA testing confirmed these were the bodies of Laci and Conner Peterson. The location where the bodies surfaced was consistent with tidal patterns and currents from the Berkeley Marina, where Scott claimed to have been fishing on December 24.

Scott Peterson was arrested on April 18, 2003, at Torrey Pines Golf Course in La Jolla, California, near the Mexican border. At the time of his arrest, Peterson had dyed his hair blonde, grown a beard, was carrying $15,000 in cash, had multiple credit cards belonging to family members, and possessed camping and survival equipment. His brother's identification was also found in his possession.

Forensic evidence presented at trial included mitochondrial DNA analysis linking a hair found on pliers in Peterson's boat to Laci's hairbrush. While this type of DNA evidence cannot definitively identify a specific individual, it was consistent with Laci having been in the boat.

Trial and Verdict

Scott Peterson's trial began in June 2004 in Redwood City, California, after the venue was changed from Stanislaus County due to extensive pretrial publicity. The trial lasted five months and featured testimony from over 180 witnesses. Prosecutor Rick Distaso presented circumstantial evidence linking Peterson to the murders, including his suspicious behavior, the affair with Amber Frey, the concrete anchors, and the location where the bodies were recovered matching Peterson's claimed fishing location.

The defense, led by Mark Geragos, argued that the evidence was entirely circumstantial and that someone else had abducted and killed Laci. The defense suggested that Laci was alive after Scott left for his fishing trip and that she may have been the victim of a random abduction.

On November 12, 2004, after seven days of deliberation, the jury convicted Scott Peterson of first-degree murder with special circumstances for killing Laci and second-degree murder for killing Conner. The special circumstances finding—murder of a witness and multiple murders—made Peterson eligible for the death penalty.

The penalty phase of the trial concluded on December 13, 2004, when the same jury recommended death. The judge formally sentenced Peterson to death, and he was transferred to San Quentin State Prison to await execution.

Today

Scott Peterson's case has remained legally active through numerous appeals and post-conviction proceedings. The California Supreme Court reviewed his conviction and in August 2020 overturned his death sentence due to errors in jury selection during the penalty phase, though the court upheld his murder convictions. Peterson was resentenced to life in prison without the possibility of parole.

Peterson's defense team has continued to pursue post-conviction relief, filing motions for new DNA testing and challenging various aspects of his trial. In 2021, a judge granted Peterson's request for additional DNA testing on evidence from the case. Peterson and his attorneys maintain his innocence and continue to argue that he did not receive a fair trial.

The case has generated extensive media coverage over two decades, including multiple documentaries, books, and television specials. A&E produced a comprehensive documentary series examining the case, and numerous true crime programs have featured detailed analyses of the investigation and trial.

The Laci Peterson case significantly impacted public awareness of violence against pregnant women and contributed to the passage of the federal Unborn Victims of Violence Act of 2004, also known as "Laci and Conner's Law," which recognizes an unborn child as a separate victim in certain federal crimes.

Peterson remains incarcerated in California state prison, where he continues to challenge his conviction while serving a life sentence without possibility of parole for the murders of Laci and Conner Peterson.