After a reporter accused of causing the deaths of soldiers with whom he was embedded in Iraq by reporting on their troop movements is shot and wounded on the eve of his return to the front, the ballistics report indicates that the gun belonged to one of the dead soldiers, leading the detectives to uncover who brought the gun back from the front and committed the crime.

When a woman abandoned by her firefighter husband for his partner's widow is threatened with also losing custody of her children, she murders her romantic rival, claiming that 9/11 post-traumatic stress syndrome prompted her actions.

Fontana and his temporary partner, Det. Nick Falco, must tread lightly when they discover links between a powerful police commissioner and the murders of an infamous porn actress and a maverick publisher.

After undercover cop Dana Baker is murdered, Fontana and Green learn that the man who killed her had discovered her identity after seeing a photograph of her.