On a spring evening in 2010, a young woman named Shannon Gilbert went missing after placing a frantic 911 call to police from Oak Beach, an oceanfront community in Long Island. Several months later, four female bodies were found on a stretch of Ocean Parkway in Long Island between Gilgo Beach and Oak Beach. They were wrapped in burlap. The corpses had a deliberate, graveyard staging, spaced evenly apart. None belonged to Gilbert, but they shared with her one very important characteristic: the women, like Shannon, had all made money answering escort ads on Craigslist. The story became national news, and incited a flurry of interest from amateur internet detectives, who posted their theories about LISK (short for Long Island Serial Killer) on the messageboards of WebSleuth.com. Over the course of the next several months, more bodies and remains were found in the area, bringing the total up to 10. Despite several promising leads, the killer was never discovered.