Monica Sementilli Sentenced to Life for Masterminding Murder of Celebrity Hairstylist Husband
In a case defined by betrayal and a calculated cover-up, Monica Sementilli has been sentenced to life in prison without the possibility of parole. The court found that Sementilli was the primary architect behind the brutal 2017 killing of her husband, Fabio Sementilli, a prominent Los Angeles hairstylist and hair care executive known for working with A-list celebrities like Jennifer Lopez and Jennifer Love Hewitt.
The 2017 Crime Scene in Woodland Hills
On January 23, 2017, the peace of a Woodland Hills neighborhood was shattered when 16-year-old Isabella Sementilli returned home to find her father unresponsive and bleeding in the backyard. Emergency services received a frantic call from the teenager, who discovered 49-year-old Fabio Sementilli dead on the patio.
Investigators discovered that Fabio had been stabbed seven times from behind while sitting in his favorite patio chair. Because the property was in chaos and Fabio’s Porsche was missing, the Los Angeles Police Department initially treated the scene as a burglary gone wrong, mirroring a trend of upscale neighborhood thefts occurring in the city since 2012 ([ABC News](https://abcnews.com/US/betrayal-turned-deadly-killing-celebrity-hair-stylist/story?id=110215482)).
From Burglary Theory to Murder Conspiracy
As the investigation deepened, detectives realized the crime was not a random act of violence but a “brilliantly” executed deception. The evidence eventually led police to Monica Sementilli and her lover, Robert Baker. The motive for the slaying was chillingly simple: the pair wanted Fabio removed so they could be together ([ABC News](https://abcnews.com/US/betrayal-turned-deadly-killing-celebrity-hair-stylist/story?id=110215482)).
Robert Baker, a 63-year-old former adult movie actor and convicted sex offender, admitted to carrying out the stabbing. Baker pleaded no contest in July 2023 to first-degree murder and conspiracy to commit murder, resulting in a sentence of life in prison without parole ([ABC7](https://abc7.com/post/fabio-sementilli-murder-monica-gets-life-parole-masterminding-prominent-la-hairstylist-husband-woodland-hills/16828140/)).
The Sentencing of the “Mastermind”
While Robert Baker attempted to shield Monica Sementilli during her trial, claiming he acted alone to ensure she would be with him more often, the court did not find his testimony credible. On June 24, 2025, Los Angeles County Superior Court Judge Ronald S. Coen sentenced Monica Sementilli to life in prison without the possibility of parole.
Judge Coen explicitly rejected the defense’s request for a lesser sentence of 25 years to life on the conspiracy charge. The judge determined that Monica was the “prime mover” and the “mastermind” of the conspiracy, stating that Baker lacked the intelligence to plan such a “brutal, well-thought out slaughter” on his own ([ABC7](https://abc7.com/post/fabio-sementilli-murder-monica-gets-life-parole-masterminding-prominent-la-hairstylist-husband-woodland-hills/16828140/)).
Key Takeaways: The Sementilli Case
- Victim: Fabio Sementilli, a celebrity hairstylist and father of three.
- Date of Crime: January 23, 2017.
- Location: The family home in Woodland Hills, California.
- Perpetrators: Monica Sementilli (wife) and Robert Baker (lover).
- Sentence: Both Monica Sementilli and Robert Baker received life in prison without the possibility of parole.
- Verdict: The court identified Monica Sementilli as the mastermind behind the conspiracy.
Frequently Asked Questions
Who was Fabio Sementilli?
Fabio Sementilli was a prominent celebrity hairstylist and hair care executive based in Los Angeles. He was known for his work with high-profile clients, including Jennifer Love Hewitt and Jennifer Lopez ([Express](https://www.express.co.uk/news/us/2189637/wife-convicted-plotting-kill-celebrity-hairstylist-husband-brutal-murder-home)).
Why was the crime initially thought to be a burglary?
The crime scene was in total chaos and Fabio’s Porsche was missing from the property, which led investigators to believe the attack was a “surprise attack” linked to a burglary ([Express](https://www.express.co.uk/news/us/2189637/wife-convicted-plotting-kill-celebrity-hairstylist-husband-brutal-murder-home)).
What was the motive for the murder?
According to court documents and Robert Baker’s account, the goal of the murder was to remove Fabio so that Monica Sementilli and Robert Baker could be together ([ABC News](https://abcnews.com/US/betrayal-turned-deadly-killing-celebrity-hair-stylist/story?id=110215482)).
The conclusion of this case brings a legal end to a tragedy that left a family devastated and a well-known figure in the beauty industry dead. With both conspirators now serving life sentences without parole, the court has ensured that the “prime mover” of the plot will remain incarcerated for the rest of her life.