Luther (2010-2015) 
A crime drama series starring Idris Elba as a near-genius murder detective whose brilliant mind can't always save him from the dangerous violence of his passions.
Luther: Episode #4.1 Season 4, Episode 1
While on a leave of absence, Luther is suddenly dragged back into his former life in London to battle the demons of his past and to stop a cannibal serial killer. [more inside]