Rex Heuermann has been charged with the murder of Valerie Mack, an escort who disappeared in 2000, marking the seventh murder charge against him in connection with the Gilgo Beach killings. Prosecutors have linked Heuermann to Mack's murder through DNA evidence, specifically hairs found on Mack's body that matched Heuermann's wife and daughter. Additionally, records show Heuermann contacted a plumbing company to drain his home pipes after the murder, suggesting attempts to cover up the crime. Mack's remains were discovered in 2000, with body parts found a decade later near other victims. Prosecutors also found a document outlining a sadistic plan, naming a location where Mack's torso was found. Heuermann, who denies the charges, is linked to seven murders from 1993 to 2010. A trial date is pending, with hearings on DNA evidence admissibility expected in early 2024.