While testifying in the trial of high-profile criminal Nick Hammer, Sophie is humiliated on the witness stand by an aggressive defence lawyer who calls her credibility into question. The case is lost and Joe gets into a heated argument with lawyer, Ray Jarvis, outside of court. Ray files an official complaint against Joe and Internal Affairs is called in to investigate the incident. Harriet won't lie to help Joe out of trouble. Her reluctance to help Joe may be warranted as Ray is soon found beaten in his home, claiming on TV for all to see that Detective Joe Hill was responsible for the attack. Joe readily admits he paid Ray a visit but that Ray refused to see him. It now falls on Joe's colleagues to not only prove his innocence, but to rebuild their original case against Nick Hammer and bring him to justice.

Theo and Nicole's evening out ends with an unexpected tragedy when Nicole is shot and rushed to hospital. With no reason for her to be the target of a contract-style shooting, the investigation is slow to develop. It is the discovery of a dead body at the bottom of a cliff that provides the crucial lead. The dead man, Lance Stiffner, was shot by the same type of gun that shot Nicole. It quickly becomes clear that Nicole was the victim of mistaken identity. The intended target was Nina Napolitano, who was having an affair with Stiffner. Her imprisoned husband found out and put out a hit on both her and Stiffner. The identity of the shooter is provided by a reluctant accomplice, and Joe and Theo are soon involved in a high-speed chase with their suspect. The chase ends when Joe draws his gun and shoots the suspect, believing to be in danger of being shot himself. However, upon searching the car, no gun is found. Was Joe mistaken or was it a case of cold-blooded revenge?

After being arrested on peeping tom charges, Joe's informant Louis “The Fly” gives detectives a tip on the location of a body. The dead man, a local jeweller, was involved in an illegal immigrant smuggling operation but when the detective's locate his murderer, they discover that he is under the protection of the Federal Police who will go to any length to keep their man safe from the clutches of the local cops.

A security guard is murdered during a break and enter at the fortress-like home of a wealthy banker. The only forensic evidence is a child's tooth discovered near his body, but could a child be capable of such a horrific crime? Joe's father, in failing health, has resurfaced in his life hoping for a reconciliation.