Line of Duty

Season 1

5 listed hours · 2012–2021 · BBC

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How this season is filed

Jed Mercurio's AC-12 interview rooms are gladiatorial: bent coppers, Hastings catchphrases, institutional rot that keeps climbing. British procedural paranoia as national event, scaled all the way to finale mania. Dialogue-heavy thriller craft — the anti-corruption unit as sport, and watercooler television that never needed a car chase.

TV Flash files Season 1 of Line of Duty (2012–2021) on BBC as the first listed season of 6 — 5 listed hours, 2012-06-26–2012-07-24 from “A Disastrous Affair” (S01E01) to “The Probation” (S01E05). Titles, dates, and synopses on file — no invented recaps.

  1. S01E01 A Disastrous Affair

    A Disastrous Affair opens Mercurio's gladiatorial AC-12 interviews: bent coppers, institutional rot, British procedural paranoia.

  1. S01E01

    A Disastrous Affair

    When Steve Arnott is transferred to a police anti-corruption unit, he finds his target is the city's top detective, Tony Gates. Can Gates really be as good as he appears? Arnott must engage in a cat-and-mouse struggle to uncover Gates' secret.

  2. S01E02

    The Assault

    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.

  3. S01E03

    In the Trap

    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.

  4. S01E04

    Terror

    Desperate for proof of Gates's corruption, Fleming pushes her relationship with him to the limit. But her behaviour causes Morton to question if she might not be such a loyal colleague after all.

  5. S01E05

    The Probation

    With Gates on the run, the anti-corruption team come under pressure to close the case once and for all. Arnott is forced to make some tough decisions about where his loyalties lie. Fleming and Hastings go all out to catch Gates, leading to a shattering conclusion.

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