Five unanswered questions haunting the ‘murder’ of Rob Reiner & his wife

THE slashing deaths of Hollywood star Rob Reiner and his wife have sparked a raft of questions, many of which stem from their alleged killer son, Nick.

Here is a look at five mysteries that leave glaring holes in the murder investigation, from hazy information about Nick’s mental health to debates on his unconfirmed motivation.

Nick, 32, is accused of murdering his parents, filmmaker Rob, 78, and his wife Michele, 68, after a chaotic weekend that spiraled from a celebrity bash to a late-night arrest near the University of Southern California.

The couple was found dead at their Brentwood home on Sunday with their throats slashed.

Nick was arrested later that night and is charged with two counts of first-degree murder, meaning he could face the death penalty if convicted.

However, his fate is still hanging in the balance, as his arrest is complicated by missing hours, unclear motives, and unanswered questions about what he did while his parents lay dead.

Here is what has been revealed about the case and what remains to be revealed.

WHAT HAPPENED AT CONAN O’BRIEN’S PARTY?

On Saturday night, Rob, Michele, and Nick were all said to have attended a star-studded holiday party hosted by comedian Conan O’Brien.

And according to several insiders, the night reportedly went sideways for the trio.

Guests present at the party claimed that Nick behaved erratically the entire night

According to the Wall Street Journal, there was one awkward moment where Nick interrupted Saturday Night Live alum Bill Hader during a private conversation and was told to butt out.

Nick was said to have asked Hader odd questions like ” What’s your name? What’s your last name? Are you famous?”

One witness told the Daily Mail, “Nick just stood there and stared before storming off.”

Tensions escalated when multiple attendees saw Rob, Michele, and Nick locked in a heated argument.

At one point, a guest suggested calling the police, Daily Mail reported.

“They got into an argument, the father and son. It got so bad and loud someone wanted to call the police to report it,” an insider told the outlet.

But O’Brien reportedly intervened before anyone rang 911, the insider claimed.

“But Conan stepped in and said, ‘it’s my house, my party, I’m not calling the police.’ He talked them out of calling the police.”

“When the s**t was hitting the fan, somebody said we need to call the police. The conversation was about getting this kid put into a mental-health hold,” the source told the Mail.

Nick eventually stormed off the party.

Outlets have also reported that Rob confided to friends that he is scared of Nick.

“I’m petrified of him,” Rob told his friends.

“I can’t believe I’m going to say this, but I’m afraid of my own son. I think my own son can hurt me.”

WAS NICK HIGH ON DRUGS?

No official details have been released saying Nick was on drugs or drunk at the time of the alleged killings.

But questions are swirling because he has a documented history of substance abuse, and the hours after the party, and after he is believed to have fled the family home, are still largely unaccounted for.

Nick had a substance abuse problem for years, his parents also tried to help him recover from it.

WAS NICK ON MEDS FOR SCHIZOPHRENIA?

According to a TMZ report, Nick was receiving care from a Los Angeles-based rehab facility that focuses on mental illness and substance abuse, and costs $70,000 a month.

Nick had been diagnosed with schizophrenia, and a report claims his behavior became increasingly “alarming” as doctors worked to fine-tune his treatment.

Things got worse three to four weeks before the murders after doctors changed his medication, leaving him even more unstable.

“Nick was out of his head,” a source told TMZ, with the report also alleging his substance abuse made his condition worse.

COULD HE GET OFF ON MENTAL HEALTH GROUNDS?

Nick’s defense could try to lean on mental health in court, but that doesn’t mean he will walk free.

One avenue his attorney, Alan Jackson, could explore is having him declare mentally unfit for trial, which would pause the proceedings while he is evaluated and treated.

That’s different from an insanity defense, which argues he wasn’t legally responsible at the time of the alleged killings.

Los Angeles criminal defense lawyer Daniel Rubin told Fox News the defense strategy will depend on “the weight and admissibility” of evidence, witness testimony, the events before the deaths, “the defendant’s mental health issues,” and any mitigating factors.

Rubin said if Reiner is found mentally incompetent, a judge can order a formal competency assessment by specialists.

“If he is found ‘incompetent,’ he will need to be medicated or treated to the point where he will be able to assist in his own defense and understand the proceedings,” Rubin added.

This process could take several weeks to several months.

If a judge finds him unfit, the case typically goes on ice while doctors work to restore competency, and it can restart if he stabilizes.

Even if he’s never restored, that doesn’t mean he goes home; he could still be held in a secure hospital setting rather than a prison.

And if he’s found fit and later convicted, prison is still very much on the table.

WILL HE GET HIS PARENTS’ FORTUNE?

If Nick already has cash or there is a trust that allows discretionary payouts, it’s possible funds could be used toward his legal bills while the criminal case is pending – because he’s presumed innocent and the inheritance question isn’t “final” yet. 

Some reports say that, until there’s a conviction or a civil finding, he isn’t automatically treated as disqualified in every setting. 

But any move to use estate or trust cash could trigger an immediate probate war, with other relatives or beneficiaries pushing to freeze payouts while the murder case is pending.

If Nick is convicted, California’s so-called “slayer statute” would likely kick in, a law that blocks someone from inheriting from a person they feloniously and intentionally killed.

In that scenario, he’d be treated as if he died before his parents for inheritance purposes, meaning he wouldn’t collect from their estate.

If he’s barred, the money would typically flow to other heirs or whoever is next in line under the will or trust.

Rob and Michele’s combined estate has been estimated at around $200 million, making the financial stakes enormous as the case heads toward court.