Last week Scott Peterson convicted in 2004 of killing his wife Laci Peterson and their unborn son made headlines again when the Los Angeles Innocence Project (LAIP) announced it was taking on his case, claiming that newly discovered evidence could support his claims of innocence.

New court filings by the organization, which is not affiliated with the national Innocence Project, claim that previously unreleased evidence in the case, including several unnamed witnesses, could prove Scotts innocence. HuffPost has reviewed a portion of the filings.

Even securing a new trial would be an uphill battle. And no new evidence is likely to change the fact that led to his conviction in the first place: When his wife disappeared on Dec. 24, 2002, Scott said he drove 90 miles from their home in Modesto, California, to go fishing in the San Francisco Bay not far from where the badly decomposed remains of Laci and her fetus washed up four months later. Prosecutors argued that Scott dumped his wifes body overboard on a fishing boat during that time.

Scotts supporters led by his determined sister-in-law Janey Peterson , who created a comprehensive website about the case have received a lot of media attention in recent years. They have repeatedly produced new arguments for his release, which have been amplified by true crime docuseries and podcasts. But much of what theyve claimed to be new evidence that exonerates Scott has already been discredited and rejected by authorities and the courts.

Heres how the case unfolded and why Scott Peterson isnt likely to be freed anytime soon.