Rob Reiner's son Nick pleaded not guilty to two counts of first-degree murder following the brutal killings of his father and mother, Michele, in December 2025.

Nick remains held without bail after being charged with stabbing the famed director and his wife to death at the end of last year. His public defender Kimberly Greene entered the not guilty plea on her client's behalf.

The plea occurred at a media-swarmed courthouse in Downtown Los Angeles on Monday, February 23, signaling another step in a likely long legal process and a case that could surround Nick's mental fitness and ability to stand trial.

Nick's attorneys are expected to question the troubled drug addict's mental state in the moments leading up to and during the murders. If there is a trial, it may not take place for over a year.

The 32-year-old could face the death penalty if convicted, as his two charges involve speial circumstances relating to multiple homiides and the use of a knife to kill Rob and Michele.

He could also face life in prison without the possibility of parole, depending on whether capital punishment is on the table.

Los Angeles County District Attorney Nathan Hochman addressed the death penalty possibility after the hearing, stating outside of the courthouse: "We take the process in which we determine whether or not the death penalty should be sought extremely seriously, and it goes through a very rigorous process.""We will be looking at all aggravating and mitigating circumstances," he added, noting Nick's lawyer was invited to present arguments for prosecutors to consider.

For Monday's hearing, Nick was dressed in a brown prison jumpsuit and only spoke to answer in the affirmative after being asked by the court if he understands he's entitled to a speedy preliminary hearing.

MORE ON:Rob ReinerRob Reiner's Son Nick in Shackles and Suicide Smock During First Court Appearance After Being Charged for Parents' Horrific MurdersRob and Michele Reiner's Son Nick Faces Possible Death Penalty If Convicted of Murdering Parents in Brutal StabbingRob Reiner's Son Nick Arrested for Murder After Brutal Killings of His Famous ParentsWant OK! each day? Sign up here!

It's not clear at this time if Nick will use insanity as part of his defense, however, his history of drug abuse and mental health issues are expected to be major focus points of the trial and sentencing if convicted.

Several reports have alleged that Nick was diagnosed with schizophrenia years before the murders and was being treated for a serious psychiatric disorder at the time of his parents' deaths.

Various reports also claimed Nick had a switch in medication in the weeks leading up to the slayings.

Nick has been in police custody since within hours after Rob and Michele were found dead in their Brentwood, Calif., home on December 14, 2025. According to the L.A. County Medical Examiner, the Hollywood couple died from "multiple sharp force injuries."