Natalie Pierce's suicide leads the detectives on a mission to discover the connection between her and 7 house fires in 9 years all resulting in the deaths of children.

The detectives continue to work on the case, will they find all the clues before another tragedy happens?

The body of bank robber Mick Booth is found in a crypt. He has been dead for a year, so who has been robbing banks acting just like him?

Sgt. Wolfe's God-daughter is found murdered and a link is found between her and several other missing teens. After speaking to one of them that returned home, they get a lead on the man who may be behind it all. Will they be able to stop him before he murders again?

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?