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The upcoming episode of Mean Girl Murders is set to delve into the murder of Leilani Beauchamp, a 19-year-old woman, who was murdered by Jessica Quintanilla because she was having an affair with the latter's ex-boyfriend. The case sent shockwaves across Fairfield, California, and remains memorable to those around at the time.
Dating back to 2021, the murder will be covered in detail in the upcoming episode of Mean Girl Murders, which premieres on June 23, 2025, on Investigation Discovery at 9 pm ET. The official synopsis for the episode, as per Investigation Discovery, reads:
"When 19-year-old Leilani Beauchamp starts turning heads, things go from fast and furious to deadly."
Who was Leilani Beauchamp, and what happened to her?
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Leilani Beauchamp was born on June 12, 2002, in Long Beach, California. She grew up in El Dorado Hills and attended Silva Valley High School in her elementary school years. She graduated from Carmel Valley High in Carmel. During the time of her murder, Leilani was attending San Jose Community College, where she was pursuing a degree in the Arts.
Leilani was said to have had big ambitions and dreamed of opening a boutique beauty salon someday. She also had many hobbies and indulged in many different activities.
However, it all changed in October 2021. Leilani was last seen leaving a Halloween Party in Sacramento with Travis Air Force Base Airman Juan Parra-Peralta and another airman in the early hours of October 30, 2021, as per a January 20, 2025, report by People magazine. She was allegedly having an affair with Juan Parra-Peralta. She was reported missing as she was not seen after this.
The police began searching for the young woman and eventually reached Juan Parra-Peralta's house, where Leilani was murdered. As per the authorities, Leilani was shot to death by Jessica Quintanilla at Parra-Peralta's house when she found Leilani on Parra-Peralta's bed, as reported on January 19, 2025, by Law & Crime.
Jessica was Parra-Peralta's ex-girlfriend and allegedly shot Leilani in a moment of passion. She claimed later that it was an accident, and it was Parra-Peralta who drew a gun at her, as per the report. She then went on to dispose of the body almost 130 miles away. After discovering the murder scene, Parra-Peralta, Jessica, and Jessica's brother, Marco Quintanilla, were arrested by the authorities.
Where are the perpetrators who killed Leilani Beauchamp?
As the case was uncovered, it was established that Jessica had shot Leilani Beauchamp to death while her brother helped her with the crime. Parra-Peralta testified against them in exchange for immunity. He also claimed that Jessica allegedly threatened to kill him, as per the aforementioned Law & Crime report.
As per the aforementioned People magazine report, Jessica Quintanilla was ultimately sentenced to 25 years to life in prison. She was convicted of first-degree murder despite her claims that it was an accident. She remains incarcerated to date. Marco Antonio Quintanilla was sentenced to four years in prison for being an accessory to murder.
The upcoming episode of Mean Girl Murders will cover this case in more detail.
