Creegan and Taylor investigate links between a number of dead bodies found in white body bags, having been delivered to the homes of the victim. The trail leads the team straight to the aftermath of the Bosnian war, where all of the victims played a part in the clean-up and salvage operation. Rivers, angered that he had the prime suspect in his clutches, attacks him when the team finally catch up with him. However, a shocking revelation blows the case wide open.

Rivers goes it alone to try and track down Keller, but the killer's one-man rampage results in two further murders and two further attacks, including his wife and partner. When a personal note is delivered to the station, and the family of one of the young murder victims participate in a press release, Keller goes on the rampage with a gun at the young boy's funeral. During a shootout, Rivers is gunned down. Taylor wonders if she pushed him too far.