Spenser takes up a seemingly open and closed cold case at the behest of a street-wise teen-age girl, who believes her mother's murderers went free. As Spenser digs deeper into the mystery, he finds a much more dangerous and complex mystery than he bargained for. When fourteen-year-old Mattie Sullivan asks Spenser to look into her mother's murder, he's not completely convinced by her claim that the police investigation four years ago was botched. Mattie...

Ten years ago, Spenser helped a teenage girl named Mattie Sullivan find her mother's killer and take down an infamous Southie crime boss. Now Mattie is a college student with a side job working for the iconic private eye, and she dreams of being an investigator herself. When Mattie's childhood friend from the South Boston housing projects, Chloe Turner, is found dead, she decides to take on the case. Soon Spenser and Mattie find ties between Turner...

Carolina Garcia-Ramirez is a rising star in national politics, taking on the establishment with her progressive agenda. Tough, outspoken, and driven, the young congresswoman has ignited a new conversation in Boston about race, poverty, health care, and the environment. Now facing her second campaign, she finds herself not only fighting a tight primary with an old guard challenger but also contending with numerous death threats coming from hundreds...

Boston PI Spenser is approached by firefighter Jack McGee, who's convinced that the apartment blaze that took the lives of five residents and three firefighters was arson.