Line of Duty - Season 4, Episode 1 (2017)
8.5
DS Steve Arnott is transferred to the police anti-corruption unit after the death of a man in a mistaken shooting during a counter-terrorist operation.
Director: John Strickland,Douglas Mackinnon,David Caffrey,Daniel Nettheim,Michael Keillor,Jed Mercurio
Writer: Jed Mercurio
Stars: Martin Compston,Vicky McClure,Adrian Dunbar,Craig Parkinson,Chrissie Harris