In this episode of Behind Closed Doors, we delve into the terrifying and chilling story of the Long Island Serial Killer, also known as LISK. Beyond the physical violence of his crimes, the killer engaged in a horrifying psychological game, taunting the families of his victims with gruesome phone calls. This episode uncovers the haunting details of those calls, the killer’s need for control, and the disturbing lengths he went to inflict lasting pain on those left behind. From the desperate 911 call of Shannan Gilbert to the discovery of bodies scattered along the desolate beaches of Long Island, we explore the torment, confusion, and fear that have plagued investigators and families alike. Could the killer be hiding in plain sight, or is he a ghost destined to evade capture forever? Prepare yourself for a deep dive into one of the most unsettling unsolved cases in modern history—a predator whose evil extends far beyond the act of murder.