Line of Duty: Series 5

Anti-Corruption Unit 12 (AC-12) face their most vicious adversary yet as the "most gripping and unpredictable drama on television" (Daily Star, UK) returns. Charged with investigating fellow police officers, AC-12's Superintendent Hastings (Adrian Dunbar, Blood) and his team including newly promoted DI Kate Fleming (Vicky McClure, Broadchurch) and determined DS Steve Arnott (Martin Compston, The Great Train Robbery) look into the fatal hijacking of a seized drugs transport. They suspect corrupt officers of leaking information to John Corbett (Stephen Graham, Boardwalk Empire), the ruthless leader of an organized crime group. With the revelation of an undercover officer in the group, AC-12 come closer than ever to discovering the identity of the corrupt cop at the top, but what they find could tear their team apart.