Pregnant women play key roles in this bone-chilling fourth novel in Gerritsen's edgy, suspenseful series of thrillers featuring Boston Medical Examiner Maura Isles and Homicide Detective Jane Rizzoli. Both of the usually gritty crime fighters are uncharacteristically vulnerable. Rizzoli is carrying her first child, and Isles-divorced and alone at age 40 and suddenly, unsettlingly aware of her b...