Laci Peterson and her unborn son were found dead in 2003.
SAN FRANCISCO -- For more than 20 years, the investigation into the murders of Laci Peterson and her unborn son has been lingering in the courts.
The bodies of Laci Peterson and her son's fetus were found more than four months after their disappearance in the San Francisco Bay in 2003. She was 27.
Police soon arrested her husband Scott Peterson following months of probing which uncovered he was having an affair before Laci Peterson's death. Scott Peterson, who was convicted in their deaths, has maintained his innocence and has been appealing the decision.
Here is a timeline of the events surrounding the investigation.
Laci Peterson's stepfather and Scott Peterson both filed reports with the police that she was missing. Laci Peterson was eight months pregnant at the time with the couple's son, Connor.
Scott Peterson, who was 30 at the time, is eyed as a suspect after it was revealed he was having an affair with Amber Frey, a massage therapist, at the time of his wife's disappearance.
Scott Peterson admitted to the affair and said he and his wife were having marital problems but he denied harming her or killing her.
He and Laci Peterson's family drift apart as the community continues to search for her.
The decomposed body of a woman that had a missing head and limbs was found washed ashore in San Francisco Bay, one day after the decomposed body of a fetus was found nearby.
DNA from the corpses matched Laci Peterson and her unborn son. Police arrested Scott Peterson, the same day.
Investigators allege he had dyed his hair, and had $15,000 in cash, his brother's ID card and multiple cell phones.
Scott Peterson was arraigned on first-degree murder in the death of his wife and second-degree murder in the death of their unborn son. He pleads not guilty.
Sharon and Dennis Rocha, Laci Peterson's parents, filed a wrongful death suit against Scott Peterson.
Scott Peterson's criminal trial lasts for five months and includes numerous witnesses including Frey, who testified that he told her he wasn't married. Peterson's defense team contended prosecutors are using circumstantial evidence and their client is innocent.
The jury found Scott Peterson guilty on both of his murder charges. Deliberations were delayed after one of the jurors, Fran Gorman, was dismissed when it was discovered she was doing research into the case. She is replaced by an alternative juror, Richelle Nice.
The jury unanimously recommended that Scott Peterson be sentenced to death.
Judge Alfred Delucchi sentenced Scott Peterson to death via lethal injection. During the hearing, Laci Peterson's family members delivered emotional victim-impact statements berating Scott Peterson. He does not give any statement.
Laci Peterson's family dropped their wrongful death suit.
Scott Peterson's attorneys filed an appeal of his conviction with a 423-page brief that makes several arguments that their client did not have a fair trial. Among the contentions was the attention, a lack of direct evidence of the crime and the judge's exclusion of prospective jurors who opposed the death penalty affected the trial.
Scott Peterson files a second appeal which includes the same allegations as the previous filing but also contended that Richelle Nice failed to disclose that she was once allegedly threatened by her boyfriend's ex-girlfriend while pregnant.
The California Supreme Court overturned the death penalty sentence.
The court noted, "The trial court made a series of clear and significant errors in jury selection that, under long-standing United States Supreme Court precedent, undermined Peterson's right to an impartial jury at the penalty phase."
However, the court upheld the conviction.
The California Supreme Court ordered a review of Scott Peterson's conviction and sent the case back to San Mateo County Superior Court to reexamine and determine if it should be overturned.
Scott Peterson was resentenced to life in prison without the possibility of parole.
Following months of hearings, arguments and briefs, Judge Anne-Christine Massullo denied Scott Peterson's request for a new trial.
The judge concluded that Nice's "responses were not motivated by pre-existing or improper bias against Petitioner, but instead were the result of a combination of good faith misunderstanding of the questions and sloppiness in answering."
The LA Innocence Project took up the case. In a court filing, the group says it seeks new evidence from the case.
Take a look at the latest stories and videos about Scott Peterson here.