Nick Reiner Fought With Bill Hader And ‘Stormed Off’ Conan O’Brien’s Party Before Killing Parents?

Nick Reiner is currently grabbing all the headlines for all the wrong reasons. The 32-year-old has been detained for the dual murders of his parents, actor, Rob Reiner, 78, and producer and photographer, Michele Singer Reiner, 68. Both were found dead in their Los Angeles home on December 14, 2025, and a few hours later, Nick was arrested in South Los Angeles. The night before, Nick reportedly engaged in a heated argument with his father, and many assumed that the verbal fight gave Nick the motive to kill his parents. Now, new details have surfaced which stated that besides Rob and Michele, Nick had an altercation with comedian, Bill Hader on the same night as well.

Why did Nick Reiner fight with Bill Hader at a Christmas party?

Nick Reiner had a tense exchange with SNL alum, Bill Hader, during Conan O’Brien’s Christmas party on Saturday, December 13, 2025. An eyewitness present at the party shared the incident with NBC News amid the growing buzz around Nick’s motive for killing his parents and whether or not he will receive a death sentence for his crime. Nick and Bill’s confrontation occurred after the former allegedly interrupted a private conversation the latter was having with another guest. When Bill Hader informed Nick Reiner that the conversation was private, eyewitnesses reported that Nick “froze,” stared at him for some time, and then “storming off” from the party.

Nick might have felt insulted or left out for not being included in Bill’s conversation with the other guest. The source added that the unwanted interaction concerned the other partygoers. The guests described Nick as “acting crazy” and repeatedly asking attendees if they were famous. Throughout the party, the attendees reportedly observed Nick acting strangely, with sources stating he was “freaking everyone out.” Nick might have been under the influence of some illegal substance while engaging in the heated verbal exchanges, as he has a history of addiction. Besides Bill Hader, Nick’s now-deceased parents also got caught up in a loud argument with him during the Christmas party.

Why did Nick Reiner fight with his parents at Conan O’Brien’s Christmas party?

Nick Reiner reportedly engaged in a “very loud argument” with his parents, Rob Reiner and Michele Singer Reiner, at Conan O’Brien’s 2025 Christmas party. According to sources present at the event, the conflict was fueled by several factors related to Nick’s deteriorating mental state and ongoing substance abuse. The primary trigger for the fight was allegedly Nick’s refusal to return to a rehabilitation facility. While he reportedly wanted to receive help at home, his parents were pressuring him to seek professional treatment following a relapse into dr*g use—specifically a combination of op**tes and her**n.

Rob and Michele were reportedly “upset and embarrassed” by their son’s behaviour and left the party shortly after the public blow-up. Family friends noted that Rob expressed he was “scared for Nick” and worried about his mental stability. The confrontation occurred only hours before Rob and Michele Reiner were found dead in their Brentwood home in Los Angeles on December 14, 2025. Nick Reiner has since been arrested and charged with two counts of first-degree murder in connection with their deaths. The victims had several knife wounds on their bodies, with the final blow leading to their deaths being the slitting of their throats.

What did Nick Reiner do after killing his parents?

After committing the gruesome dual murders of Rob and Michele, Nick Reiner allegedly checked into The Pierside Santa Monica hotel and used his own credit card for the one-day reservation. Upon checkout, hotel staff and investigators found the shower and bedsheets covered in blood; the windows had also been covered. Nick reportedly fled the area after knowing that the police were looking for him and was eventually caught roughly 20 miles away from the hotel.

What are your thoughts on the new information regarding Nick Reiner’s fight with Bill Hader? Let us know.

Also Read: Rob Reiner And Wife Ignored Son, Nick During His Dr*g Rehab 10 Years Ago? ‘We Were Desperate’