Rex Heuermann was a Manhattan-based architectural consultant who lived in Massapequa Park, Long Island, while secretly killing women over nearly two decades. Arrested in July 2023, he was linked to the victims through cell phone data, witness descriptions, and DNA evidence including hairs and a discarded pizza crust. In April 2026 he pleaded guilty to killing seven women and admitted to an eighth, with sentencing set for June 2026.
Victims
Melissa Barthelemy (24)
Megan Waterman (22)
Amber Costello (27)
Maureen Brainard-Barnes (25)
Sandra Costilla (28)
Jessica Taylor (20)
Valerie Mack (24)
Karen Vergata (34)
Location
Ocean Parkway, Gilgo Beach, Babylon, New York, USA
Summary
Remains of multiple women were discovered along Ocean Parkway near Gilgo Beach starting in December 2010; architect Rex Heuermann was arrested in 2023 and pleaded guilty in 2026 to killing eight women.
Details
In December 2010, the skeletal remains of four women were found along Ocean Parkway near Gilgo Beach on Long Island, New York, sparking one of the longest serial-killer investigations in U.S. history. More remains were later discovered, and in July 2023 authorities arrested Rex Heuermann, a Manhattan architectural consultant from Massapequa Park. Investigators tied him to the killings through cell phone records, burner phones, witness accounts, and DNA. In April 2026, Heuermann pleaded guilty to the murders of seven women and admitted killing an eighth, Karen Vergata, with strangulation deaths spanning 1993 to 2010.
Discovery of the Remains
In December 2010, a Suffolk County police officer and his cadaver dog conducting an unrelated search for a missing woman, Shannan Gilbert, discovered human skeletal remains in dense brush along Ocean Parkway near Gilgo Beach on Long Island, New York. Within days, investigators recovered the bodies of four women, later identified as Maureen Brainard-Barnes, Melissa Barthelemy, Megan Waterman, and Amber Lynn Costello. The four, all in their twenties, had advertised as escorts online and had gone missing between 2007 and 2010. Each had been bound and concealed in burlap, and the cluster became known as the 'Gilgo Four.'
Subsequent searches along Ocean Parkway through the spring of 2011 uncovered additional human remains, including those of other women, an unidentified male, and a young child. Some sets of remains were linked to earlier dumping grounds, suggesting the disposal sites had been used over many years. The discoveries prompted speculation that one or more serial killers had operated along the coastline of Long Island, and the case drew sustained national attention as it remained unsolved for more than a decade.
A Stalled Investigation
For years the investigation produced few public breakthroughs. The case was complicated by turnover and controversy within the Suffolk County Police Department, including the indictment and conviction of former police chief James Burke on unrelated charges, which critics said had hampered cooperation with federal authorities. Investigators publicly debated whether the remains were the work of a single killer or multiple offenders, and whether Shannan Gilbert, whose 2010 disappearance had triggered the original search, was a victim of the same perpetrator or had died accidentally.
In 2022, a multi-agency task force was formed, combining Suffolk County police and prosecutors with state and federal investigators. The team re-examined physical evidence and pursued modern forensic and digital techniques, including DNA analysis and cellphone records tied to burner phones used to contact the victims. These efforts focused attention on a suspect linked by a vehicle description, billing records, and other circumstantial evidence accumulated over the years.
Arrest of Rex Heuermann
On July 13, 2023, authorities arrested Rex Heuermann, a Manhattan-based architectural consultant who lived in Massapequa Park, a Long Island suburb not far from the dumping sites. Heuermann, then in his late fifties, was charged in connection with the murders of three of the Gilgo Four: Melissa Barthelemy, Megan Waterman, and Amber Lynn Costello. He was named the prime suspect in the death of the fourth, Maureen Brainard-Barnes. Prosecutors said evidence included a hair recovered from one victim's restraints that was linked through DNA to Heuermann's household, as well as records placing his phone and accounts in contact with the victims.
Heuermann pleaded not guilty and was held without bail. In the months that followed, prosecutors brought additional charges. In January 2024 he was formally charged in the death of Brainard-Barnes. In June 2024 he was indicted in the 2003 death of Jessica Taylor and the 1993 death of Sandra Costilla, and in December 2024 he was charged in the 2000 death of a victim later identified as Valerie Mack. Investigators also pointed to a document described as a 'planning' file recovered from his home.
The 2026 Guilty Plea
After repeatedly denying involvement, Heuermann reversed course. In a court appearance in Suffolk County in April 2026, the 62-year-old pleaded guilty in connection with the murders of seven women spanning the years 1993 to 2010: Maureen Brainard-Barnes, Melissa Barthelemy, Megan Waterman, Amber Lynn Costello, Jessica Taylor, Valerie Mack, and Sandra Costilla. He entered pleas to multiple counts of first-degree and intentional murder. In open court he admitted strangling the victims and disposing of their bodies along Gilgo Beach, and acknowledged using burner phones to contact them.
As part of the plea, Heuermann also admitted to causing the death of an eighth woman, Karen Vergata, who had disappeared in 1996, although he had not been formally charged in that case. Bringing his total admissions to eight victims, the resolution averted a lengthy trial. Reporting on the precise count of formal charges versus admissions varied slightly across outlets, with some headlines citing seven charged murders and others emphasizing the eight total killings he acknowledged. As part of the agreement, he reportedly agreed to cooperate with the FBI.
Sentencing and Open Questions
Heuermann was expected to be sentenced to life in prison without the possibility of parole, with sentencing scheduled for June 2026. The plea brought a measure of resolution to families who had waited more than a decade and, in some cases, far longer for answers. The victims, several of whom had advertised as escorts, had at times been marginalized in early public discussion of the case, and advocates emphasized their humanity in the wake of the plea.
Some questions associated with the broader Long Island investigation remained unresolved. The death of Shannan Gilbert, whose 2010 disappearance led to the original discovery, had been officially attributed by authorities to accidental drowning, a conclusion her family disputed; Heuermann was not charged in her death. Other remains found along Ocean Parkway, including those of a male and a young child, had been the subject of continued forensic work. The case has been widely documented and remains among the most prominent American serial-killer investigations of the 21st century.
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Frequently asked questions
What was the Gilgo Beach / Long Island Serial Killer - Rex Heuermann case?
Remains of multiple women were discovered along Ocean Parkway near Gilgo Beach starting in December 2010; architect Rex Heuermann was arrested in 2023 and pleaded guilty in 2026 to killing eight women.
Who was responsible for Gilgo Beach / Long Island Serial Killer - Rex Heuermann?
Rex Heuermann. Rex Heuermann was a Manhattan-based architectural consultant who lived in Massapequa Park, Long Island, while secretly killing women over nearly two decades. Arrested in July 2023, he was linked to the victims through cell phone data, witness descriptions, and DNA evidence including hairs and a discarded pizza crust. In April 2026 he pleaded guilty to killing seven women and admitted to an eighth, with sentencing set for June 2026.
Who were the victims of the Gilgo Beach / Long Island Serial Killer - Rex Heuermann case?
The named victims were Melissa Barthelemy, Megan Waterman, Amber Costello, Maureen Brainard-Barnes, Sandra Costilla, Jessica Taylor, Valerie Mack, Karen Vergata.
Where and when did the Gilgo Beach / Long Island Serial Killer - Rex Heuermann case take place?
It took place in Babylon, New York, USA in 2010.
Was the Gilgo Beach / Long Island Serial Killer - Rex Heuermann case solved?
