When Lucy Kincaid's career plans are derailed, her boyfriendprivate investigator and security expert Sean Roganasks for her help on his latest investigation. His teenage cousin is missing and the police believe she's a runaway. Using her well-honed cyber-hunting skillsand her knowledge of how predators thinkLucy soon uncovers a shocking secret life of wild raves filled with drugs, sex, and murder.
In New York City, a serial killer is on the loose. Dubbed the Cinderella Strangler by the press, he cruises underground sex parties looking for easy targets. When yet another girl ends up dead, FBI Agent Suzanne Madeaux's case collides with Sean's search for his cousin. Suzanne doesn't want the help of two civilians, but it might be the only way to stop this killer.
As Lucy gets closer to the truth, she risks everythingher future job with the FBI, her future happiness with Sean, and her own lifeto dig deep into the psyche of both predator and prey. Lucy's painful memories of her own encounters with evil lead her down a dark path from which she may never be able to escape.