Cast: Idris Elba, Ruth Wilson, Steven Mackintosh, Indira Varma, Paul McGann, Saskia Reeves, Warren Brown, Dermot Crowley
- Airs: 9pm Tuesdays
- Air Dates: May 2010 - Still Running...
John Luther is a Detective Chief Inspector working for the Serious Crime Unit in season one, and the new Serious and Serial Crime Unit in season two. A dedicated police officer, Luther is also a genius. He is obsessive, possessed, and sometimes dangerous in the violence of his fixations. But Luther has paid a heavy price for his dedication; he has never been able to prevent himself from being consumed by the darkness of the crimes with which he deals. For Luther, the job always comes first. His dedication is a curse and a blessing, both for him and those close to him.