Long Island Serial Killer Rex Heuermann Pleads Guilty to 7 Murders
The former architect, 62, also admitted to killing an eighth victim,
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Courts and Crime Long Island Serial Killer Rex Heuermann Pleads Guilty to 7 Murders The former architect, 62, also admitted to killing an eighth victim, By Brenna Ehrlich Brenna Ehrlich Contact Brenna Ehrlich on X Contact Brenna Ehrlich by Email View all posts by Brenna Ehrlich April 8, 2026 Eight grieving families got answers Wednesday when Rex Heuermann, who has been accused of being the Long Island Serial Killer , pleaded guilty to murdering eight young women at the Arthur M. Cromarty Court Complex in Suffolk County, New York. The 62-year-old Massapequa, Long Island, resident confessed to killing Melissa Barthelemy, 24, Megan Waterman, 22, Amber Costello, 27, Maureen Brainard-Barnes, 25, Jessica Taylor, 20, Valerie Mack, 24, and Sandra Costilla, 28 over the course of nearly 20 years. Heuermann also admitted guilt in the murder he was not previously charged with, Karen Vergata, 34, who had disappeared in 1996. Her remains had gone unidentified until in 2023, when she was ID’d via genetic genealogy. Heuermann had initially pleaded not guilty to the seven murders and was set to go to trial in September. Heuermann agreed to several life sentences with no possibility of parole and has given up his right to appeal in exchange for no further prosecution for the eight victims. He also agreed to be interviewed by the FBI’s Behavioral Analysis Unit. He will be sentenced on June 17. Heuermann, a former architect, was arrested outside his office in Manhattan in July 2023 and was initially charged with the murders of Barthelemy, Waterman, and Costello. Over the following two years, as police built their case against him, he was also charged with the murders of Brainard-Barnes, Taylor, Mack, and Costilla. He was held without bail, with a 32-page court document detailing the profusion of evidence that led to his arrest. Bail was denied due to the “heinous nature” of the crimes, wrote the prosecution, noting how long it took to arrest Heuermann. The document also highlighted “hi...
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