Epizoda 2 (S04E02)

On the trail of a horrifying cannibalistic killer, Luther (Idris Elba) is dogged at every step by ghosts from his past. Isolated and on edge, it takes every fibre of Luther's being to keep it together. Can a cold case help unlock a mystery that's tormenting him to distraction? Meanwhile, the serial killer is still on the loose. Benny's (Michael Smiley) hacking skills have revealed a list of hundreds of potential victims but, with a rapidly escalating number of crime scenes, Luther must use all his ingenuity to work out where the killer is headed next. Discovering it's all part of a macabre endgame, Luther is forced to put himself and his new colleague Emma (Rose Leslie) into the heart of danger to try and stop the murdering madness. (BBC)