Everyone becomes a suspect when a baby dies at his first birthday party. Meanwhile, Claire comes back with a problem and only Duncan can help her. But will he risk his career to do it?

The Homicide squad are called in following a man killed by electric kamikaze. The case then takes an even more bizarre turn after the discovery of six urns, all filled with human ashes. Who was the deceased? A victim? Or a killer?

Terry Jarvis does his utmost to get rid of Duncan from the homicide team as the rest of the team try to solve the death of an Iraqi boy apparently killed in a police pursuit.

The decomposed bodies of a couple, who disappeared in 1978, are found in their missing van in a dry dam. At the same time of the discovery the investigating officer Christopher Spotswood commits suicide.

A murder victim's body is found dumped in wasteland, with no evidence of her identity. Simon leads the team as they delve into the unknown life of Jane Doe. It will take every available hand to untangle this mystery.