Epizoda 4 (S03E04)

Marwood (Elliot Cowan) makes his vendetta personal - targeting Luther (Idris Elba) and those closest to him, raining destruction on everything he touches. Stark (David O'Hara) and Gray (Nikki Amuka-Bird) arrive just in time to hurry Mary (Sienna Guillory) to a secret place, but is her safety really Stark's priority, or is she just a pawn in his game to lure Luther to him? Luther, bereft of friends and support, is left broken when he is accused of crimes he hasn't committed. But just as his situation seems hopeless, help arrives in the form of an unexpected ally. How can he stop Marwood becoming a public martyr, when he himself is on the run, forced to work outside the law? (BBC)