Home News Videos Shannan Gilbert’s Sister Blasts Cops Over Gilgo Beach Serial Killer Investigation | NBC New York Shannan Gilbert’s Sister Blasts Cops Over Gilgo Beach Serial Killer Investigation | NBC New York May 18, 2022 comments off Tweet on Twitter Share on Facebook Pinterest Local News for Orange County NY gilbert gilgo beach gilgo beach murders gilgo beach unsolved killer long island serial killer shannan gilbert shannan gilbert 911 call