Spenser and his new apprentice trace the murder of a young woman to an international crime ring that has been operating with impunity because of the powerful and highly connected billionaire at its helm.

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 and dozens of other girls from poor families to an eccentric billionaire with a massive home along Commonwealth Avenue. The man owns properties and businesses throughout Massachusetts with connections to local politicians, the state house, and beyond. Mattie unravels a massive sex-trafficking ring that will take them from Boston to the Bahamas. -- adapted from jacket

Ten years ago, Spenser helped a teenage girl named Mattie Sullivan find her mother's killer. Now Mattie is a college student with a side job working for the tough but tender private eye. In her first big case, Mattie links the exploitation of dozens of girls to an eccentric billionaire and his sadistic henchwoman. Spenser and trusted ally Hawk must again watch out for Mattie as she unravels a massive sex-trafficking ring that will take them from Boston to Boca Raton to the Bahamas, crossing paths with an old enemy of Spenser's--the Gray Man--for a final epic showdown.

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 - a college student with a side job working for the tough but tender private eye - dreams of being an investigator herself. Her first big case involves a 15-year-old girl assaulted by a much older man at one of Boston's most prestigious private clubs. The girl, Chloe Turner, only wants the safe return of her laptop and backpack. But like her mentor and boss, Mattie has a knack for asking the right questions of the wrong people. Soon Spenser and Mattie find ties between the exploitation of dozens of other girls from working class families to an eccentric billionaire and his sadistic henchwoman with a mansion on Commonwealth Avenue. The mystery man's wealth, power and connections extend well beyond Massachusetts - maybe even beyond the United States. Spenser and trusted ally Hawk must again watch out for Mattie as she unravels a massive sex-