With a possible serial killer stalking elderly women in Long Beach, California, homicide detective Abby Hart's best lead is Luke Murphy, an irritating private investigator who saw a suspect flee the scene of the latest homicide. But as she works with the handsome PI to unravel the serial killer case, she must also confront the spark between them. When Abby discovers that the most recent victim is related to the governor, she's anxious to talk to him about a cold case that's personal to her, one Luke is interested in as well.

As she learns more about the restaurant fire that took her parents' lives years ago, Abby discovers why Luke is so invested in finding the ones responsible. With everyone else telling her to walk away from this case, Abby and Luke search for evidence buried beneath years of deceit . . . and soon realize that someone will do anything to make sure this case remains cold.