Stephanie Plum's struggle to choose between Joe Morelli and Ranger is upended by a search for her grandmother's inheritance that is further complicated by two fortune-hunting enemies from the past.

Working as a private investigator in New Mexico, former CIA agent Lemuel Gunn comes to the aid of Ornella Neppi, who has made a mess out of her uncle's bail bonds business and needs Gunn's help in bringing in an elusive criminal who jumped bail.