The Best Episodes of Line of Duty

Episode 6

#1 - Episode 6 8.89

Season 3 - Episode 6

DS Steve Arnott is arrested on suspicion of murder but continues to protest his innocence. Does DC Kate Fleming's undercover operation hold the key to Steve's guilt and the identity of the Caddy?

Episode 5

#2 - Episode 5 8.52

Season 3 - Episode 5

AC-12's loyalties are divided when DS Steve Arnott comes under scrutiny from his colleagues. With his career in jeopardy, Arnott turns to an unlikely source for help.

Episode 5

#3 - Episode 5 8.24

Season 1 - Episode 5

Gates goes on the run, convinced he can save his career and marriage by proving his innocence. As his options dwindle, the anti-corruption team faces renewed pressure to close the case, but rifts start to appear when Arnott questions how far Fleming is willing to go to get results.

Directors: Douglas Mackinnon
Episode 2

#4 - Episode 2 8.13

Season 2 - Episode 2

Following the tragedy at the hospital, AC12's Kate Fleming is planted undercover in Lindsay Denton's Missing Persons Unit. But Lindsay in turn gathers compromising evidence against the anti-corruption team.

Directors: Douglas Mackinnon
Episode 1

#5 - Episode 1 8.11

Season 2 - Episode 1

A brutal ambush on a police convoy leaves three officers dead and a protected witness fighting for his life. AC-12 turns its spotlight on Lindsay Denton, the officer who led the convoy but escaped unscathed.

Directors: Douglas MacKinnon
Episode 4

#6 - Episode 4 8.05

Season 1 - Episode 4

Desperate for proof of Gates's corruption, Fleming pushes her relationship with him to the limit, but her behaviour causes Morton to question her loyalty.

Directors: Douglas Mackinnon
Episode 2

#7 - Episode 2 7.96

Season 1 - Episode 2

Having been duped into covering up Jackie's crime, Gates is desperate to sever ties with her. But, as Arnott and Fleming close in on his secret, Gates is plunged into an even more dangerous situation than he first thought.

Directors: David Caffrey
Episode 3

#8 - Episode 3 7.91

Season 1 - Episode 3

Arnott is convinced Gates played a part in Jackie's disappearance. With Fleming's help, the anti-corruption team tries to trap Gates into revealing his involvement in covering up Jackie's crimes.

Directors: David Caffrey
Episode 1

#9 - Episode 1 7.77

Season 1 - Episode 1

When a counterterrorism raid goes tragically wrong, DS Steve Arnott refuses to participate in a cover-up. Ostracised by colleagues, he transfers to an anti-corruption unit led by Supt. Ted Hastings. He soon finds his target is the city's top detective, DCI Tony Gates. with whom he must engage in a cat-and-mouse struggle to uncover Gates' secret.

Directors: David Caffrey