When an outspoken young congresswoman running for re-election faces numerous death threats, her chief of staff reaches out to Spenser for security and he soon crosses paths with an extremist group called The Minutemen.

"It's December in Boston, and Spenser is busy planning the menu for Christmas dinner when he's confronted in his office by a young boy named Slide. Homeless and alone, Slide has found refuge with an organization named Street Business, which gives shelter and seeks job opportunities for the homeless and lost. Slide's mentor, Jackie Alvarez, is being threatened, and Street Business is in danger of losing its tenuous foothold in the community, turning...

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...