Suffolk County prosecutors announced hat Rex A. Heuermann, the accused Gilgo Beach serial killer, has pleaded guilty to seven murders and admitted responsibility for an eighth killing, bringing a grim chapter in a decades-long investigation closer to resolution.
Heuermann, 62, of Massapequa Park, entered guilty pleas to three counts of first-degree murder and four counts of second-degree murder. During his allocution, he also confessed to the killing of Karen Vergata, a victim long known to investigators as “Fire Island Jane Doe” before she was identified through genetic genealogy in 2023.
District Attorney Raymond A. Tierney said the plea reflects the strength of the evidence developed through a renewed, multi-agency investigation.
“Today’s plea ensures that this defendant will spend the rest of his life behind bars and provides a measure of justice for the victims and their families,” Tierney said.
Prosecutors outlined a pattern of killings spanning nearly two decades, from 1993 to 2010.
Authorities said Heuermann met several victims through online advertisements, often using so-called “burner phones” to arrange meetings. In each case, he strangled the victims before disposing of their remains, many of which were later discovered along Ocean Parkway near Gilgo Beach.
Among the victims were Melissa Barthelemy, Megan Waterman, and Amber Costello, whose deaths drew national attention after their remains were found in 2010. Heuermann is expected to receive three consecutive life sentences without the possibility of parole for those killings.
He also pleaded guilty to the murders of Maureen Brainard-Barnes, Jessica Taylor, Sandra Costilla, and Valerie Mack. For those crimes, prosecutors said he faces an additional sentence of 100 years to life, to run consecutively.
The defendant admitted to killing Costilla in 1993, one of the earliest known victims, and later murders that involved dismemberment and the scattering of remains across Suffolk County. Several victims were not identified for years, underscoring the complexity of the case.
Vergata’s killing, which Heuermann admitted as part of the plea agreement, had remained unsolved for decades. Her remains were discovered in separate locations in 1996 and 2011, but her identity was unknown until recent advances in forensic genealogy.
Authorities emphasized the extensive collaboration behind the case, led by the Gilgo Homicide Task Force, which included local, state, and federal agencies. Advances in forensic technology and renewed investigative efforts were key in linking Heuermann to the crimes.
Heuermann was arrested on July 13, 2023, following a long-term investigation that reexamined evidence and leveraged new techniques.
He is scheduled to return to court for sentencing on June 17, 2026. Prosecutors said the plea agreement ensures accountability for all known victims without the need for a lengthy trial.
Family members of the victims have long sought answers and justice. While the guilty plea closes a legal chapter, officials acknowledged the lasting impact of the crimes on the families and the broader community.
“This case is about the victims,” Tierney said, “and ensuring their stories are never forgotten.”