Elizabeth Shaw specializes in wills and trusts at the Boston law firm of Shaw & Cartwright, and over the years she's developed a friendship with wives of very wealthy men. However, these rich wives have a mutual secret: they've all had an affair with a man named Gary Eisenhower--and now he's blackmailing them for money. Shaw hires Spenser to make Eisenhower "cease and desist," so to speak, but when women start turning up dead, Spenser's assignment...

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...