Image Credit: Newsday via Getty Images Rex Heuermann, the suspected Long Island serial killer, was arrested in 2023 and has since been charged in connection with the murders of seven women: Megan Waterman, Melissa Barthelemy, Amber Costello, Maureen Brainard-Barnes, Jessica Taylor, Sandra Costilla and Valerie Mack. Heuermann was initially arrested in July 2023 for the deaths of four women, whose remains were discovered in burlap sacks along Ocean Parkway in New York over a decade ago. Heuermann pleaded not guilty to all charges.