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The Best Episodes of Line of Duty Season 4

Every episode of Line of Duty Season 4 ranked from best to worst. Discover the Best Episodes of Line of Duty Season 4!

The Best Episodes of Line of Duty Season 4

A drama about the investigations of AC-12, a controversial police anticorruption unit.

Seasons6

  1. Background image for Episode 1
    8.4/10(1.5k votes)

    #1 - Episode 1

    S4:E1

    DCI Roz Huntley is under intense pressure from her superiors to apprehend a serial murderer after months of fruitless investigation.

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    Director:Jed Mercurio
  2. Background image for Episode 2
    8.1/10(1.3k votes)

    #2 - Episode 2

    S4:E2

    AC-12 crank up their investigation into Operation Trapdoor. Kate makes progress in her undercover role.

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    Director:Jed Mercurio
  3. Background image for Episode 3
    8.6/10(1.4k votes)

    #3 - Episode 3

    S4:E3

    As AC-12 wrestle with the new forensic evidence casting doubt over Tim Ifield, Kate is approached by another woman claiming to have been assaulted by Michael Farmer.

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  4. Background image for Episode 4
    8.5/10(1.3k votes)

    #4 - Episode 4

    S4:E4

    Roz's husband Nick is brought in for questioning by AC-12. But while Nick denies any involvement in Steve's attack, his suspicions about Roz mount.

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  5. Background image for Episode 5
    8.5/10(1.3k votes)

    #5 - Episode 5

    S4:E5

    DCI Roz Huntley struggles to allay her husband's suspicions. AC-12 find a new angle to pursue their case against her.

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  6. Background image for Episode 6
    9.0/10(1.6k votes)

    #6 - Episode 6

    S4:E6

    While Nick Huntley faces lengthy questioning, AC-12 remain convinced of Roz's involvement.

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Season 4 Ratings Summary

"Episode 1" is the best rated episode of "Line of Duty" season 4. It scored 8.4/10 based on 1537 votes. Directed by Jed Mercurio and written by Jed Mercurio, it aired on 3/26/2017. This episode is rated 0.3 points higher than the second-best, "Episode 2".