Episode 3

Luther is assigned to hunt a vigilante killer, who murders those he believes have lost their right to life. The case probes the interests of the media, and soon the team has a political and criminal nightmare on their hands. As public support seems to grow for the killer, the team puts themselves in danger to try and stop him from killing again. However, Ripley and the vigilante come face-to-face, and only one of them will survive the encounter.