The son of Valerie Mack, one of the seven known female victims prosecutors said were killed by Rex A. Heuermann, has filed a wrongful death lawsuit against the accused Gilgo Beach serial killer, his ex-wife and daughter, records show. The lawsuit, which is the first known litigation brought by any of the Gilgo victims' family members against Heuermann, comes as the 62-year-old from Massapequa Park is reportedly expected to plead guilty on Wednesday to the killings that have haunted the region for more than a decade. In addition, the Suffolk County District Attorney’s Office has scheduled a news conference for Wednesday afternoon, the anticipated guilty plea. Read more in the link in bio. (Photo credit: James Carbone) . . . #longisland #liny #nassau #suffolk #gilgo #gilgobeach #crime #districtattorney