Serial Killer Documentaries » The Long Island Serial Killer (also referred to by media sources as the "Gilgo Killer") is an unidentified suspected serial killer who is believed to have murdered 10 to 14 people associated with the sex trade over the last 15 or so years and dumped their bodies along the Ocean Parkway, near the remote beach towns of Gilgo Beach and Oak Beach in Suffolk County and the area of Jones Beach State Park in Nassau County