Long Island investigators had a description of a suspect vehicle — a Chevy Avalanche — in the Gilgo Beach murders in case files since 2010. However, no one tracked down the vehicle until a task force was created to solve the murders more than a decade later. Then, it only took detectives six weeks to identify the vehicle and suspect 59-year-old Rex Heuermann. Suffolk County legislator and retired detective Robert Trotta joined "Elizabeth Vargas Reports" to discuss what he calls a "major mistake" that authorities made during the decadeslong investigations. Read the latest on the case: newsnationnow.com/crime/police-probe-heuermann-atlantic-city-deaths #LongIslandSerialKiller #LISK #GilgoBeachMurders #ChevyAvalanche #RexHeuermann More #VargasReports: newsnationnow.com/joinus Anchor Elizabeth Vargas delivers the biggest stories, without bias or opinion. Watch "Elizabeth Vargas Reports" every weeknight at 6p/5C on NewsNation. #VargasReports NewsNation is yo...