Thirteen years after Scott Peterson was found guilty of killing his wife Laci and their unborn son, he is appealing his death sentence. So does this mean that Scott will be getting a new trial? In his habeas corpus appeal, Scott blames his lawyer for failing to call certain witnesses and a juror for lying as evidence enough he deserves a retrial.

However, Nancy Grace, who is examining Scott's case on tonight's episode of Grace vs. Abrams, thinks there might be a chance the now 45-year-old will be walking out of prison. Watch the video above to see the latest update on the Scott Peterson murder case.

Scott first appealed his sentence in 2012 via a direct appeal, which was focused largely on the judge's ruling. The habeas appeal, which was filed in 2015, alleges that Scott's constitutional rights were violated because he was deprived of effective legal counsel. According to The Modesta Bee, his appeal also accuses juror Richelle Nice of "failing to mention that she had been assaulted while pregnant four years earlier."

In 2004, Scott was found guilty of murdering his pregnant wife before dumping her body in the San Francisco Bay. At the time, his attorney Mark Geragos claimed that Scott was framed by a homeless person or a burglar. However, prosecutors believe he killed his wife, not to continue his admitted affair with Amber Frey, but to be free of having a child and wife. It also didn't help that at the time of his arrest, Scott had dyed his hair blonde and was found with $15,000 cash, reportedly in an attempt to flee to Mexico.

laci peterson getty images

Laci Peterson before her death.

In an exclusive interview with In Touch, Scott’s father, Lee, shed light on the shockingly comfortable life Scott was living while awaiting his own demise. “Scott is doing wonderfully. He’s found a life behind bars,” he said in June 2016. “We talk all the time and he’s always in good spirits.” Journalist Nancy Mullane also confirmed that Scott didn't seem miserable in prison, adding, "When I saw Scott, he was playing basketball. He didn’t look depressed. He looked like someone you’d see on the street playing basketball. He had his shirt off and his boxer shorts up. He wasn’t ripped, but he looked healthy. He was having a good time."

Grace vs. Abrams airs tonight at 10 p.m. EST on A&E.