TMZ Investigates: Gilgo Beach Serial Murders: Missed Warning Signs analyzes the decades-long investigation revolving around the infamous series of tragic killings between 1996 and 2011, in which human remains of 11 people were found on or near Gilgo Beach on New York's Long Island. Today, Rex Heuermann, the suspected Gilgo Beach serial killer, stands accused of murdering multiple sex workers in a Long Island beach town. TMZ explores how a botched investigation and missed clues may have led to even more murders.