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“Dead Girls Don’t Talk”: 48 Hours Examines Examines the Homicides of Christy Giles & Hilda Marcela Cabrales-Arzola June 20 2026

Ryan Gill

CBS News’ 48 Hours presents “Dead Girls Don’t Talk” on Saturday, June 20, 2026, revisiting a Los Angeles case that drew national attention and exposed years of alleged predatory behavior by a man prosecutors described as a serial sexual predator. Correspondent Jonathan Vigliotti examines the deaths of Christy Giles and Hilda Marcela Cabrales-Arzola, two young women whose lives ended after a night out in November 2021, and the lengthy investigation that ultimately led to the conviction of David Brian Pearce.

The episode focuses not only on the murders but also on the women who survived encounters with Pearce and helped build the case against him. Through interviews with investigators, family members, and survivors, 48 Hours explores how years of allegations, overlooked warning signs, and determined investigative work culminated in one of Los Angeles County’s most significant sexual assault and homicide prosecutions in recent memory.

Christy Giles and Hilda Marcela Cabrales-Arzola: Two Young Women Pursuing Their Dreams

Christy Giles was a 24-year-old model and aspiring designer who had relocated to Los Angeles from Alabama. Friends and family described her as ambitious, creative, and determined to build a future in the fashion and entertainment industries. She had recently married artist and special effects editor Jan Cilliers and was beginning a new chapter in her life.

Hilda Marcela Cabrales-Arzola, 26, was an architect from Mexico who had moved to Los Angeles to pursue opportunities in design and architecture. Like Giles, she was building a promising career and embracing the opportunities available in Southern California. The two women became close friends and frequently socialized together in Los Angeles. Their families later described them as intelligent, hardworking women whose futures were stolen by a senseless crime.

The Night That Ended in Tragedy

On November 12, 2021, Giles and Cabrales-Arzola spent the evening socializing at several locations in Los Angeles, including Soho House and a warehouse party. During the course of the night, they encountered David Pearce and his associates, Brandt Osborn and Michael Ansbach. Evidence later showed that the women accompanied the men to Pearce’s apartment after leaving the party.

What happened over the following hours became the focus of a years-long criminal investigation. Prosecutors alleged that Pearce supplied dangerous drugs that rendered the women incapacitated. Evidence presented during trial showed that the women became unresponsive inside Pearce’s residence. Instead of calling emergency services, prosecutors argued that Pearce and others attempted to conceal what had happened.

Abandoned Outside Hospitals

Security footage became one of the most disturbing pieces of evidence in the case. Investigators discovered that masked men transported the women in a Toyota Prius and left them outside two separate hospitals in the early hours of November 13, 2021. The men did not identify themselves and drove away after abandoning the women.

Giles was left outside Southern California Hospital in Culver City and was pronounced dead shortly after arrival. Cabrales-Arzola was left outside Kaiser Permanente West Los Angeles Medical Center. Although she was still alive when discovered, she suffered catastrophic medical complications and remained on life support until her family made the heartbreaking decision to remove life support days later, shortly before her 27th birthday.

Toxicology Findings and the Homicide Investigation

Medical examiners determined that both deaths were homicides. Toxicology reports revealed a combination of drugs in the women’s systems. Giles was found to have fentanyl, cocaine, ketamine, and GHB, commonly known as the “date rape drug,” in her body. Cabrales-Arzola’s toxicology findings also revealed multiple substances, including cocaine and MDMA, along with other drugs.

The circumstances surrounding the hospital drop-offs immediately raised suspicions among investigators. Detectives from the Los Angeles Police Department began tracing the women’s final movements, reviewing surveillance footage, analyzing digital evidence, and interviewing witnesses. The investigation soon pointed toward Pearce and uncovered allegations that extended far beyond the deaths of Giles and Cabrales-Arzola.

David Pearce and a Pattern of Predatory Behavior

As detectives dug deeper, they discovered that Pearce had previously been accused of drugging and sexually assaulting women. According to prosecutors, Pearce often portrayed himself as a successful Hollywood producer or influential entertainment figure in order to gain trust and access to potential victims. Several women later described being lured into situations where they were allegedly drugged and assaulted.

The investigation prompted authorities to seek additional victims. Women from across Los Angeles came forward with remarkably similar accounts. Many reported becoming incapacitated after consuming drinks or substances provided by Pearce. Their stories established what prosecutors argued was a long-running pattern of drug-facilitated sexual assaults stretching back more than a decade.

Survivors Help Build the Case

One of the central themes of “Dead Girls Don’t Talk” is the courage shown by survivors who stepped forward despite the personal cost. Their testimony became critical because Giles and Cabrales-Arzola could no longer tell investigators what had happened to them. Survivors provided firsthand accounts of encounters that closely mirrored the prosecution’s theory of the murders.

Among those featured in the 48 Hours broadcast is a survivor identified as “Jackie,” who publicly shares her experience for the first time. Her willingness to testify helped prosecutors establish a pattern of behavior and supported claims that Pearce repeatedly used drugs to incapacitate women before sexually assaulting them. The survivors’ collective testimony transformed the case from a double homicide investigation into the exposure of a serial offender.

The Trial and the “Dead Girls Don’t Talk” Statement

The prosecution presented extensive evidence during the trial, including surveillance footage, toxicology findings, witness testimony, digital records, and accounts from numerous survivors. Prosecutors argued that Pearce knowingly supplied dangerous drugs and then failed to seek medical assistance when the women became critically ill.

A statement attributed to Pearce became one of the most memorable elements of the prosecution’s case. Witness testimony indicated that Pearce allegedly remarked, “Dead girls don’t talk,” after the women became unresponsive. Prosecutors argued that the statement reflected both consciousness of guilt and a willingness to place self-preservation above human life. The phrase ultimately became the title of the 48 Hours episode and a symbol of the prosecution’s case.

Guilty Verdicts and Justice for the Victims

In February 2025, a Los Angeles jury found David Brian Pearce guilty of two counts of first-degree murder in the deaths of Christy Giles and Hilda Marcela Cabrales-Arzola. Jurors also convicted him of numerous sexual assault offenses involving seven separate victims, including forcible rape, sexual penetration by force, rape of an unconscious person, and sodomy by force.

The verdict represented a major victory for the victims’ families and the survivors who testified. After years of investigation and legal proceedings, the jury accepted the prosecution’s argument that Pearce’s conduct directly caused the deaths of Giles and Cabrales-Arzola and formed part of a broader pattern of predatory behavior.

Sentencing and the Lasting Impact of the Case

Although 48 Hours notes that Pearce was awaiting sentencing at the time of the original reporting, he was later sentenced in October 2025 to 146 years to life in prison. The judge imposed the maximum sentence available, ensuring that Pearce would spend the remainder of his life behind bars.

The case also had implications for Pearce’s associate, Brandt Osborn. A jury initially deadlocked on charges that he acted as an accessory after the fact, resulting in a mistrial. Later proceedings led to a resolution of those charges, but the central focus remained on Pearce’s responsibility for the deaths and assaults.

For the families of Christy Giles and Hilda Marcela Cabrales-Arzola, no verdict can erase the loss. Yet the convictions ensured that the circumstances surrounding their deaths were fully examined in court. 48 Hours: Dead Girls Don’t Talk serves as both a chronicle of a complex criminal investigation and a tribute to the survivors, investigators, and families who refused to let the victims’ voices be forgotten.

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