If Detective Shane Scully's best friend, Jody Dean, committed suicide three years ago, then who did Shane just see for one fleeting moment on the Ventura Freeway? He's convinced it was his former colleague. Or was his mind playing tricks? Shane's lover, Alexa Hamilton, herself a lauded LAPD officer, happens to think so. But Shane knows what he saw. And for a rogue cop with nothing left to lose, the search for Dean has become more than an investigation. It's become an obsession.