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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 9.0/10

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
    9.0/10(3174 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
    8.8/10(1785 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
    8.8/10(1675 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 5 Episode 4 - Episode 4
    8.8/10(1504 votes)

    #4 - 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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  5. Line of Duty Season 5 Episode 5 - Episode 5
    8.7/10(1291 votes)

    #5 - 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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  6. Line of Duty Season 5 Episode 6 - Episode 6
    8.7/10(1534 votes)

    #6 - 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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    The 20 WORST Episodes of Line of Duty

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  7. Line of Duty Season 2 Episode 2 - Episode 2
    8.6/10(1556 votes)

    #7 - 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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  8. Line of Duty Season 5 Episode 1 - Episode 1
    8.6/10(1625 votes)

    #8 - 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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  9. Line of Duty Season 5 Episode 2 - Episode 2
    8.6/10(1371 votes)

    #9 - 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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  10. Line of Duty Season 2 Episode 4 - Episode 4
    8.5/10(1459 votes)

    #10 - 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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  11. Line of Duty Season 3 Episode 1 - Episode 1
    8.5/10(1712 votes)

    #11 - 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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  12. Line of Duty Season 2 Episode 1 - Episode 1
    8.4/10(1785 votes)

    #12 - 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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  13. Line of Duty Season 2 Episode 5 - Episode 5
    8.4/10(1483 votes)

    #13 - 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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  14. Line of Duty Season 4 Episode 3 - Episode 3
    8.4/10(1461 votes)

    #14 - 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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  15. Line of Duty Season 4 Episode 4 - Episode 4
    8.4/10(1412 votes)

    #15 - 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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  16. Line of Duty Season 6 Episode 5 - Episode 5
    8.4/10(1517 votes)

    #16 - 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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  17. Line of Duty Season 3 Episode 3 - Episode 3
    8.3/10(1431 votes)

    #17 - 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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  18. Line of Duty Season 6 Episode 4 - Episode 4
    8.3/10(1629 votes)

    #18 - 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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  19. Line of Duty Season 2 Episode 3 - Episode 3
    8.2/10(1470 votes)

    #19 - Episode 3

    S2:E3

    Lindsay is denied bail and finds herself targeted in prison. Growing increasingly desperate, she tells Kate about a relationship with an executive police officer and her theory of why she is being framed.

    Director:Douglas Mackinnon
    Writer:Jed Mercurio

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  20. Line of Duty Season 2 Episode 6 - Episode 6
    8.2/10(1503 votes)

    #20 - Episode 6

    S2:E6

    AC12's investigation finally exposes a vicious criminal gang run from within the police. But while Steve now appears convinced of Lindsay's innocence, Kate remains determined to prove she had a role in the ambush.

    Director:Daniel Nettheim
    Writer:Jed Mercurio

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  21. Line of Duty Season 3 Episode 2 - Episode 2
    8.2/10(1445 votes)

    #21 - 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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  22. Line of Duty Season 4 Episode 1 - Episode 1
    8.2/10(1623 votes)

    #22 - 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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  23. Line of Duty Season 4 Episode 5 - Episode 5
    8.2/10(1366 votes)

    #23 - 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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  24. Line of Duty Season 1 Episode 5 - Episode 5
    8.1/10(1809 votes)

    #24 - 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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  25. Line of Duty Season 4 Episode 2 - Episode 2
    8.1/10(1377 votes)

    #25 - Episode 2

    S4:E2

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

    Director:Jed Mercurio
    Writer:Jed Mercurio

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Best Episodes Summary

"Episode 6" is the best rated episode of "Line of Duty". It scored 9/10 based on 3174 votes. Directed by John Strickland and written by Jed Mercurio, it aired on 4/28/2016. This episode scored 0.2 points higher than the second highest rated, "Episode 5".