In a city full of victims, it's murder to choose just one... Chelsea Hart, a fresh-faced Indiana college student, spends the final night of her spring break in the VIP room of an elite New York City nightclub with her girlfriends and a fake ID. The next morning, joggers find her in East River Park, her celebrated blonde hair hacked off. NYPD Detective Ellie Hatcher catches the case and quickly homes in on a group of privileged men who were last seen partying with Chelsea.

When a tight case is built against a young hedge fund manager, the department is elated. But Ellie has her doubts. Chelsea's murder is eerily similar to three other deaths that occurred a decade ago: the victims were young, female, and in each case, the killer had taken her hair as a souvenir. Ellie's search for the truth pits her against her fellow cops and places her under the watchful eye of of a psychopath eager to add the prideful young detective to his list...