Gilgo Beach serial killings suspect Rex Heuermann has been charged with the murder of a seventh woman, according to a superseding indictment.
Heuermann now faces a second-degree murder charge in the death of Valerie Mack, a 24-year-old Philadelphia mother who worked as an escort at the time of her disappearance. Mack's partial remains were discovered in eastern Long Island in November 2000.
Heuermann was first arrested in July 2023 and charged with the murders of four women—Melissa Barthelemy, Megan Waterman, Amber Costello, and Maureen Brainard-Barnes—whose bodies were found in 2010 along Long Island’s Gilgo Beach. The victims, known as the “Gilgo Four,” were discovered bound with belts or tape and wrapped in burlap. Heuermann pleaded not guilty to all four charges.
In June 2024, two additional second-degree murder charges were filed for the deaths of Jessica Taylor, who was killed in 2003, and Sandra Costilla, who was killed in 1993. Heuermann also pleaded not guilty to these charges.
The victims are among at least 11 sets of remains found near Long Island’s Suffolk County waterfront since 2010.
The 60-year-old architect is scheduled to appear before State Supreme Court Judge Timothy Mazzei in Riverhead, New York, on Tuesday morning.
