Sabrina ColeApr 9, 2026 5 min read

Rex Heuermann Pleads Guilty in Gilgo Beach Serial Killings

Katherine Shepherd and Rex Heuermann at a bar in Manhattan in 2004. | Dateline
Katherine Shepherd and Rex Heuermann at a bar in Manhattan in 2004. | Dateline

A Long Island architect who spent years living an ordinary suburban life while secretly murdering women pleaded guilty Wednesday to one of the most disturbing serial killing cases in New York history.

Rex Heuermann, 62, appeared in Suffolk County Court in Riverhead and admitted to murdering seven women and intentionally causing the death of an eighth over a span of nearly 17 years. He waived his right to appeal and is expected to receive a sentence of life in prison without parole when he returns to court June 17.

What Heuermann Admitted in Court

The roughly 30-minute hearing drew a packed courtroom of reporters, law enforcement, and victims' family members, some of whom wept as Heuermann calmly described his crimes.

Rex Heuermann. | Suffolk County Sheriff's Office
Rex Heuermann. | Suffolk County Sheriff's Office

Heuermann confirmed he strangled all eight victims, dismembered some of them, bound others by their head and legs, and wrapped their bodies in burlap before dumping them. He never looked back at the gallery. He kept his gaze fixed straight ahead throughout.

He pleaded guilty to three counts of first-degree murder and four counts of second-degree murder. As part of the plea deal, he also admitted to intentionally causing the death of Karen Vergata — whose dismembered remains were found in 1996 and again in 2011 at separate Long Island locations — though he was never formally charged in her killing. In exchange, prosecutors agreed not to pursue that charge.

Heuermann also agreed to cooperate fully with the FBI's behavioral analysis unit.

The Victims

Six of the victims — Melissa Barthelemy, Maureen Brainard-Barnes, Amber Lynn Costello, Valerie Mack, Jessica Taylor, and Megan Waterman — were found in scrub brush along Ocean Parkway near Gilgo Beach. All were in their 20s, worked as escorts, and had similar physical builds. Barthelemy, Brainard-Barnes, Costello, and Waterman, known as the Gilgo Four, disappeared between 2007 and 2010 and were found bound in burlap in close proximity to one another in December 2010.

Karen Vergata, Jessica Taylor, Maureen Brainard-Barnes, and Valerie Mack. | Suffolk County District Attorney’s Office / Netflix / Suffolk County Police Department
Karen Vergata, Jessica Taylor, Maureen Brainard-Barnes, and Valerie Mack. | Suffolk County District Attorney’s Office / Netflix / Suffolk County Police Department
Sandra Costilla, Melissa Barthelemy, Megan Waterman, and Amber Lynn Costello. | FindaGrave / Barthelemy family / Suffolk County Police Department
Sandra Costilla, Melissa Barthelemy, Megan Waterman, and Amber Lynn Costello. | FindaGrave / Barthelemy family / Suffolk County Police Department

Sandra Costilla, 28, was discovered more than 60 miles away in Southampton in 1993. Jessica Taylor, 20, vanished in July 2003. Valerie Mack, 24, disappeared in 2000. Vergata's fragmented remains were recovered in two separate locations more than a decade apart.

Heuermann carried out the murders while his then-wife, Asa Ellerup, and their children were away on vacations, prosecutors said. Ellerup, who filed for divorce after his 2023 arrest, was present in court Wednesday along with the couple's daughter. Outside the courthouse, Ellerup said her thoughts were with the victims and their families.

How the Case Was Cracked

The Gilgo Beach investigation began in earnest in late 2010 after police discovered multiple sets of human remains along a remote stretch of Ocean Parkway while searching for Shannan Gilbert, a 24-year-old escort who had gone missing after fleeing a client's home in a gated community.

Aerial view of a long stretch of Ocean Parkway on Southern Long Island near Gilgo Beach in Suffolk County, New York. | Wikimedia Commons / jphillipobrien2006 / CC 2.0
Aerial view of a long stretch of Ocean Parkway on Southern Long Island near Gilgo Beach in Suffolk County, New York. | Wikimedia Commons / jphillipobrien2006 / CC 2.0

The case stalled for years. In February 2022, then-Suffolk County Police Commissioner Rodney Harrison formed a multiagency task force that included the Suffolk County Police Department, the New York State Police, and the FBI. Within weeks, detectives identified Heuermann as a suspect by connecting him to a green Chevrolet Avalanche — a distinctive pickup truck a witness had reported seeing when Amber Lynn Costello disappeared in 2010.

From there, the task force built a meticulous case. Investigators combed cell tower data, billing records for burner phones Heuermann allegedly used to arrange meetings with victims, and his internet search history — which included extensive viewing of violent torture pornography and an intense personal interest in the Gilgo Beach investigation itself. Prosecutors said he kept a written document they described as a blueprint for his killings, listing supplies, dump site locations, and detailed planning notes.

To obtain his DNA, surveillance agents tailed Heuermann in Manhattan, where he worked as an architect. When he discarded a partially eaten box of pizza crusts in a sidewalk garbage can, investigators grabbed it immediately. DNA from the crust matched a male hair found on the burlap used to restrain one of the victims.

Heuermann was arrested in July 2023 and initially charged with the murders of Barthelemy, Waterman, and Costello. Additional charges followed, including murders dating back to 1993.

What Happens Next

Heuermann is scheduled to be sentenced June 17. His expected sentence includes life in prison without parole, three consecutive life sentences, and four additional terms of 25 years to life.

Defense attorney Michael Brown said the decision to plead guilty and cooperate with the FBI was Heuermann's alone. When asked whether his client was sorry, Brown said he would expect Heuermann to address that at sentencing.

Suffolk County District Attorney Ray Tierney held a press conference Wednesday afternoon with victims' families and task force members present.

No further charges are currently pending against any other individuals.


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