The first three series of the BBC crime thriller series starring Idris Elba. Brilliant but flawed murder detective John Luther (Elba) sees it as his personal crusade to track down the depraved killers it is his job to identify. But as he struggles with personal demons, his strong moral code cannot always be relied upon to protect him from the dangerous violence of his own emotions and passions. Warren Brown, Dermot Crowley and Ruth Wilson co-star.