Drama series following the investigations of AC-12, a controversial police anti-corruption unit.


Jed Mercurio
9 ( 1)




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Top Rated TV #113 | 16 wins & 40 nominations. See more awards »





Series cast summary:
Adrian Dunbar ...  Hastings 36 episodes, 2012-2021
Martin Compston ...  Steve / ... 36 episodes, 2012-2021
Vicky McClure ...  Kate / ... 36 episodes, 2012-2021
Craig Parkinson ...  Cottan 16 episodes, 2012-2019
Gregory Piper ...  Ryan 16 episodes, 2012-2021


Line of Duty follows Detective Seargent Steve Arnott (Martin Compston), an former authorized firearms officer who led an operation to catch an Islamic terrorist intending to detonate a bomb, but the strike team mistakenly entered the wrong apartment and shot dead an unarmed innocent man. In the subsequent investigation Arnott refused to cover up negligence in the planning and execution of the raid and unable to work in his unit anymore, Arnott receives a transfer to AC-12, a unit tasked with uncovering police corruption. Arnott is partnered with D.C. Kate Fleming (Vicky McClure), a highly-commended undercover officer with a keen investigative instinct. They work under the supervision of Superintendent Ted Hastings (Adrian Dunbar), who is one of several Senior Investigating Officers responsible for uncovering corruption within the police force. Throughout the series, AC-12 investigate seemingly disparate cases involving seemingly-corrupt police officers, with each series focusing on a ... Written by World Productions

Plot Summary | Plot Synopsis


Corruption... Loyalty... Justice... See more »


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Did You Know?


Mark Bonnar (Dryden) & Henry Pettigrew (Cole) also worked together on New Blood (2016) as Peter Mayhew & Bruce Lockwood respectively, as well as on two episodes of Shetland (2013) as Duncan Hunter & Iain Redford respectively. See more »

User Reviews

Strong British series, in the Scandinavian style
31 March 2015 | by BeneCumbSee all my reviews

In recent years, I have generally "moved on" from Poirot-Wallander type of series (usually 1 episode - 1 solved case) to more sophisticated and intertwined series where events take place in parallel and with flashbacks, and for full comprehension, one should watch all the episodes in sequence. It take more time and dedication, but there are more versatile characters and more complex situations where one can ponder on and over more intensely.

Line of Duty is a really fine example of the above. The two series - so far - have been really catchy to follow, there is both mind-work and twisted turns, and they are more or less equal (in my opinion, One has a bit stronger performances thanks primarily to Lennie James as DCI Tony Gates, but Two has a bit meatier script). But anyway, I did really enjoy the course of events, the often thin line between cops and crooks (what about its actuality?), and nice round-up of things that really took place. I would juxtapose Line of Duty with e.g. Engrenages (France) and Ørnen: En krimi-odyssé (Denmark).

I am looking forward to next seasons already.

PS. 3, 4 and 5 are meaty as well, please proceed :)

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Release Date:

21 August 2012 (USA) See more »

Also Known As:

Line of Duty See more »

Company Credits

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Technical Specs


Sound Mix:

Dolby Digital



Aspect Ratio:

1.78 : 1
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