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The Best Episodes of Line of Duty

Every episode of Line of Duty ranked from best to worst. Let's dive into the Best Episodes of Line of Duty!

Binge this in 1d 12h•Peaking at 9.5/10

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

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Episode Rankings

  1. #1 Fan Favorite
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    Line of Duty Season 3 Episode 6 - Episode 6
    9.5/10(3117 votes)

    #1 - Episode 6

    S3:E6

    DS Steve Arnott is arrested on suspicion of murder but continues to protest his innocence.

    Director:John Strickland
    Writer:Jed Mercurio

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  2. Line of Duty Season 3 Episode 5 - Episode 5
    9.1/10(1751 votes)

    #2 - Episode 5

    S3:E5

    Loyalties are divided when DS Steve Arnott comes under scrutiny from his colleagues.

    Director:John Strickland
    Writer:Jed Mercurio

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  3. Line of Duty Season 4 Episode 6 - Episode 6
    9.0/10(1648 votes)

    #3 - Episode 6

    S4:E6

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

    Director:John Strickland
    Writer:Jed Mercurio

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  4. Line of Duty Season 6 Episode 4 - Episode 4
    9.0/10(1603 votes)

    #4 - Episode 4

    S6:E4

    DCI Jo Davidson faces increasing pressure from all sides as AC-12 make major breakthroughs in the investigation, but an attempt to interview a key witness goes horribly wrong.

    Director:Gareth Bryn
    Writer:Jed Mercurio

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  5. Line of Duty Season 5 Episode 4 - Episode 4
    8.9/10(1474 votes)

    #5 - Episode 4

    S5:E4

    Tensions rise in the OCG following the events at Eastfield. With troubling questions hanging over the identity of ‘H', suspicions mount at AC-12.

    Director:John Strickland
    Writer:Jed Mercurio

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  6. Line of Duty Season 6 Episode 5 - Episode 5
    8.9/10(1488 votes)

    #6 - Episode 5

    S6:E5

    AC-12 link Gail Vella’s murder with a historic case of police corruption, and Kate hatches a plan to tell once and for all if Jo is bent. They are closer than ever to cracking the case, but when Hastings’ authority is undermined it leaves his team in a potentially dangerous situation.

    Director:Jennie Darnell
    Writer:Jed Mercurio

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    The 20 WORST Episodes of Line of Duty

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  7. Line of Duty Season 2 Episode 5 - Episode 5
    8.7/10(1454 votes)

    #7 - Episode 5

    S2:E5

    Lindsay fights for her life as troubling details emerge of a vicious conspiracy involving corrupt police officers. With growing evidence of links between DCC Dryden and the ambush, Hastings is under pressure to arrest his senior officer.

    Director:Daniel Nettheim
    Writer:Jed Mercurio

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  8. Line of Duty Season 3 Episode 1 - Episode 1
    8.6/10(1674 votes)

    #8 - Episode 1

    S3:E1

    Sergeant Danny Waldron and his armed response team shoot dead a hardened criminal.

    Director:Michael Keillor
    Writer:Jed Mercurio

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  9. Line of Duty Season 4 Episode 3 - Episode 3
    8.6/10(1437 votes)

    #9 - 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.

    Director:John Strickland
    Writer:Jed Mercurio

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  10. Line of Duty Season 2 Episode 1 - Episode 1
    8.5/10(1746 votes)

    #10 - Episode 1

    S2:E1

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

    Director:Douglas Mackinnon
    Writer:Jed Mercurio

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  11. Line of Duty Season 2 Episode 2 - Episode 2
    8.5/10(1527 votes)

    #11 - Episode 2

    S2:E2

    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.

    Director:Douglas Mackinnon
    Writer:Jed Mercurio

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  12. Line of Duty Season 4 Episode 4 - Episode 4
    8.5/10(1387 votes)

    #12 - 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.

    Director:John Strickland
    Writer:Jed Mercurio

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  13. Line of Duty Season 4 Episode 5 - Episode 5
    8.5/10(1341 votes)

    #13 - 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.

    Director:John Strickland
    Writer:Jed Mercurio

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  14. Line of Duty Season 5 Episode 1 - Episode 1
    8.5/10(1597 votes)

    #14 - Episode 1

    S5:E1

    Following the deadly hijack of a police convoy, AC-12 target a ruthless organised crime group known to have links with corrupt officers.

    Director:John Strickland
    Writer:Jed Mercurio

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  15. Line of Duty Season 5 Episode 2 - Episode 2
    8.5/10(1348 votes)

    #15 - Episode 2

    S5:E2

    Kate and Steve attempt to track down a lead. A fresh police leak enables another audacious raid, while Steve’s attempts to gather information put him in a dangerous situation.

    Director:John Strickland
    Writer:Jed Mercurio

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  16. Line of Duty Season 5 Episode 5 - Episode 5
    8.5/10(1270 votes)

    #16 - Episode 5

    S5:E5

    As the hunt for 'H' intensifies, Steve and Kate wonder if Hastings is guarding a dark secret.

    Director:Susan Tully
    Writer:Jed Mercurio

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  17. Line of Duty Season 2 Episode 4 - Episode 4
    8.4/10(1432 votes)

    #17 - Episode 4

    S2:E4

    Following the violent attack she suffered in prison, Lindsay is granted special dispensation to visit her dying mother. Meanwhile, deputy chief constable Dryden shrugs off allegations about his relationship with Lindsay and possible links to the ambush.

    Director:Daniel Nettheim
    Writer:Jed Mercurio

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  18. Line of Duty Season 3 Episode 3 - Episode 3
    8.4/10(1395 votes)

    #18 - Episode 3

    S3:E3

    DS Steve Arnott believes there is a dark secret in Danny Waldron's past.

    Director:Michael Keillor
    Writer:Jed Mercurio

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  19. Line of Duty Season 3 Episode 4 - Episode 4
    8.4/10(1402 votes)

    #19 - Episode 4

    S3:E4

    Fresh testimony launches AC-12 back on the trail of a corrupt officer.

    Director:John Strickland
    Writer:Jed Mercurio

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  20. Line of Duty Season 4 Episode 1 - Episode 1
    8.4/10(1596 votes)

    #20 - Episode 1

    S4:E1

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

    Director:Jed Mercurio
    Writer:Jed Mercurio

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  21. Line of Duty Season 5 Episode 3 - Episode 3
    8.4/10(1300 votes)

    #21 - Episode 3

    S5:E3

    Corbett's most daring plan yet requires McQueen to exploit links with corrupt police officers.

    Director:John Strickland
    Writer:Jed Mercurio

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  22. Line of Duty Season 5 Episode 6 - Episode 6
    8.4/10(1509 votes)

    #22 - Episode 6

    S5:E6

    In a nail-biting 90-minute finale, Hastings's secrets are laid bare. Will 'H' be revealed at last?

    Director:Susan Tully
    Writer:Jed Mercurio

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  23. Line of Duty Season 1 Episode 5 - Episode 5
    8.3/10(1769 votes)

    #23 - Episode 5

    S1:E5

    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.

    Director:Douglas Mackinnon
    Writer:Jed Mercurio

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  24. Line of Duty Season 3 Episode 2 - Episode 2
    8.3/10(1414 votes)

    #24 - Episode 2

    S3:E2

    After the shooting at the drugs house, DC Fleming increases the pressure on Danny Waldron.

    Director:Michael Keillor
    Writer:Jed Mercurio

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  25. Line of Duty Season 6 Episode 3 - Episode 3
    8.3/10(1203 votes)

    #25 - Episode 3

    S6:E3

    On the strength of evidence from a new witness, DCI Jo Davidson brings Terry Boyle back in for questioning about Gail Vella's murder. Kate is torn between loyalty to Jo and wanting to assist AC-12's investigation, and tensions increase when Kate encounters a face from the past with links to organised crime.

    Director:Gareth Bryn
    Writer:Jed Mercurio

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Best Episodes Summary

"Episode 6" is the best rated episode of "Line of Duty". It scored 9.5/10 based on 3117 votes. Directed by John Strickland and written by Jed Mercurio, it aired on 4/28/2016. This episode scored 0.4 points higher than the second highest rated, "Episode 5".