9.5/102,751 votesLoading...#1 - Episode 6
Season 3 Episode 6 - Aired 4/28/2016
DS Steve Arnott is arrested on suspicion of murder but continues to protest his innocence.
Director: John Strickland
Writer: Jed Mercurio
9.1/101,610 votesLoading...#2 - Episode 5
Season 3 Episode 5 - Aired 4/21/2016
Loyalties are divided when DS Steve Arnott comes under scrutiny from his colleagues.
Director: John Strickland
Writer: Jed Mercurio
9.0/101,521 votesLoading...#3 - Episode 6
Season 4 Episode 6 - Aired 4/30/2017
While Nick Huntley faces lengthy questioning, AC-12 remain convinced of Roz's involvement.
Director: John Strickland
Writer: Jed Mercurio
9.0/101,501 votesLoading...#4 - Episode 4
Season 6 Episode 4 - Aired 4/11/2021
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
8.9/101,370 votesLoading...#5 - Episode 4
Season 5 Episode 4 - Aired 4/21/2019
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
8.9/101,386 votesLoading...#6 - Episode 5
Season 6 Episode 5 - Aired 4/18/2021
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
8.7/101,326 votesLoading...#7 - Episode 5
Season 2 Episode 5 - Aired 3/12/2014
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
8.6/101,546 votesLoading...#8 - Episode 1
Season 3 Episode 1 - Aired 3/24/2016
Sergeant Danny Waldron and his armed response team shoot dead a hardened criminal.
Director: Michael Keillor
Writer: Jed Mercurio
8.6/101,325 votesLoading...#9 - Episode 3
Season 4 Episode 3 - Aired 4/9/2017
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
8.5/101,600 votesLoading...#10 - Episode 1
Season 2 Episode 1 - Aired 2/12/2014
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
8.5/101,399 votesLoading...#11 - Episode 2
Season 2 Episode 2 - Aired 2/19/2014
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
8.5/101,269 votesLoading...#12 - Episode 4
Season 4 Episode 4 - Aired 4/16/2017
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
8.5/101,228 votesLoading...#13 - Episode 5
Season 4 Episode 5 - Aired 4/23/2017
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
8.5/101,487 votesLoading...#14 - Episode 1
Season 5 Episode 1 - Aired 3/31/2019
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
8.5/101,248 votesLoading...#15 - Episode 2
Season 5 Episode 2 - Aired 4/7/2019
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
8.5/101,172 votesLoading...#16 - Episode 5
Season 5 Episode 5 - Aired 4/28/2019
As the hunt for 'H' intensifies, Steve and Kate wonder if Hastings is guarding a dark secret.
Director: Susan Tully
Writer: Jed Mercurio
8.4/101,307 votesLoading...#17 - Episode 4
Season 2 Episode 4 - Aired 3/5/2014
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
8.4/101,282 votesLoading...#18 - Episode 3
Season 3 Episode 3 - Aired 4/7/2016
DS Steve Arnott believes there is a dark secret in Danny Waldron's past.
Director: Michael Keillor
Writer: Jed Mercurio
8.4/101,288 votesLoading...#19 - Episode 4
Season 3 Episode 4 - Aired 4/14/2016
Fresh testimony launches AC-12 back on the trail of a corrupt officer.
Director: John Strickland
Writer: Jed Mercurio
8.4/101,472 votesLoading...#20 - Episode 1
Season 4 Episode 1 - Aired 3/26/2017
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
8.4/101,205 votesLoading...#21 - Episode 3
Season 5 Episode 3 - Aired 4/14/2019
Corbett's most daring plan yet requires McQueen to exploit links with corrupt police officers.
Director: John Strickland
Writer: Jed Mercurio
8.4/101,400 votesLoading...#22 - Episode 6
Season 5 Episode 6 - Aired 5/5/2019
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
8.3/101,630 votesLoading...#23 - Episode 5
Season 1 Episode 5 - Aired 7/24/2012
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
8.3/101,305 votesLoading...#24 - Episode 2
Season 3 Episode 2 - Aired 3/31/2016
After the shooting at the drugs house, DC Fleming increases the pressure on Danny Waldron.
Director: Michael Keillor
Writer: Jed Mercurio
8.2/101,316 votesLoading...#25 - Episode 3
Season 2 Episode 3 - Aired 2/26/2014
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
Best Episodes Summary
"Episode 6" is the best rated episode of "Line of Duty". It scored 9.5/10 based on 2751 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".