During Nick Reiner’s intense fight with his dad Rob, partygoers panicked as Conan O’Brien stopped a 911 call

Conan O’Brien Intervenes During Heated Holiday Party

Conan O’Brien reportedly stopped guests from calling 911 during a tense argument between Nick Reiner and his parents, filmmaker Rob Reiner and photographer Michele Singer Reiner, at the comedian’s holiday party.

Tensions Rise at the Christmas Party

On December 13, Nick attended the Christmas gathering with his parents. His behavior grew increasingly alarming and erratic, alarming attendees. Some guests even considered calling police or requesting a psychiatric hold.

O’Brien Steps In

Sources say O’Brien intervened, telling guests: “It’s my house, my party. I’m not calling the police.” His quick action prevented authorities from being contacted, even as the confrontation escalated.

Guests Fear for Their Safety

Several attendees, including actor Bill Hader, were unsettled by Nick’s actions. Guests described him as acting “creepily” and interrupting private conversations, asking repeatedly if others were famous.

Image credits: Michael Buckner/Getty Images

Rob Reiner Expressed Fear

Hours before his death, Rob Reiner reportedly told partygoers he feared his son might hurt him. Friends revealed that Rob and Michele were concerned for Nick’s mental health but brought him to the party to avoid leaving him alone.

Tragic Outcome

Rob and Michele were later found dead on December 14. Authorities ruled their deaths as homicides. Nick Reiner was arrested and charged with two counts of first-degree murder.

Mental Health Concerns

Nick had been diagnosed with schizophrenia weeks before the incident. Sources indicate that recent medication adjustments and worsening drug use contributed to his erratic behavior. He had also spent time at a Los Angeles rehab facility specializing in mental illness and substance abuse.

Legal Proceedings

Nick appeared stoic at his first court appearance on December 17, speaking only three words: “Yes, your honor.” He is expected to plead not guilty by reason of insanity. His arraignment is scheduled for January 7, 2026.