Line of Duty: Season 4 (2017)


Season 4
Line of Duty

Critics Consensus

Line of Duty's gripping fourth season is an adrenaline-fueled thrill ride from start to finish.



Critic Ratings: 14


Audience Score

User Ratings: 55
User image


Air date: Jun 22, 2019
Air date: Jun 29, 2019
Air date: Jul 6, 2019
Air date: Jul 13, 2019
Air date: Jul 20, 2019
Air date: Jul 27, 2019

Line of Duty: Season 4 Photos

Tv Season Info

Line of Duty returns forafourth series, as AC12 continues to hunt for any corruption lurking within the police.

News & Interviews for Line of Duty: Season 4

Critic Reviews for Line of Duty Season 4

All Critics (14) | Top Critics (4)

How Jed Mercurio turns acronyms into utterly natural TV dialogue, and makes lanyards so damned sexy, are two of the great mysteries of our age.

Apr 7, 2017 | Full Review…

For the white knights of AC-12, cynicism is a useful factory setting as they delve into the depths.

Mar 27, 2017 | Rating: 4/5 | Full Review…

...Line Of Duty takes the familiar police procedural drama and turns it on its head. There are layers upon layers at work. So when you think a line of inquiry is putting one individual in the frame, a different suspect emerges.

May 20, 2019 | Rating: 5/5 | Full Review…

The series was perhaps a touch more over-the-top than previous ones, but it was still bloody brilliant television, leaving viewers with more unanswered questions than ever before.

Oct 17, 2018 | Full Review…

Line of Duty is animated by a sharp intelligence in both the plotting and the writing.

Dec 26, 2017 | Full Review…

[Line of Duty] is utterly gripping, with the show continuing to capitalise on the 'main character gets killed early' trope they started.

Sep 6, 2017 | Full Review…

Much as I love the cast and the dialogue, this season's plotting verges on the farcical.

Jan 3, 2018 | Rating: 3/5 | Full Review…

What is beyond dispute is that Thandie Newton's DCI Roz Huntley was a startling creation, equal parts brittle anxiety and relentless, shameless calculation.

Dec 18, 2017 | Full Review…
Top Critic

The finale was phenomenally exciting.

Aug 30, 2017 | Rating: 5/5 | Full Review…

This is less like watching TV, and more like being abducted by it, cuffed, then dragged along.

Jun 28, 2017 | Full Review…
Top Critic

Audience Reviews for Line of Duty: Season 4

  • Aug 16, 2019
    I watched up to Season 4 but I won't watch more. Its very well written and acted. Unfortunately the BBC Diversity Police got their clutches on what could have been a great drama. If you'd never been to the UK and watched this you'd think A. that 30% or more of the UK population is Black, which it isn't (Its less than 10%) and B. Most of the most physically demanding police jobs in the UK are done by Women, which is not the case by a very long way. The finale of Season 4 was farcical and a big let down after hours spent watching the build-up!. As a Brit I can't stand to watch any more of this grossly misrepresented view of British society.
  • Jul 20, 2019
    The core characters continue to develop in this excellent series.
  • Jun 15, 2019
    A bit disappointing compared to the first three series, I didn't fnd the performances beleiveable. Maybe the Director/Producer had been briefed to make it really fast paced. Maybe they felt something to prove because Thandi Newton was on board. There was no space for the characters or story to breathe. Disappointed.
  • Jul 24, 2018
    Gripping throughout as always.
  • Jul 22, 2018
    Started out ok, but just kept getting more and more ridiculous. Really incredibly stupid by the end.
  • Jul 11, 2018
  • Jan 10, 2018
    Best season so far. Very focused script with no side stories unless relevant. Fantastic storytelling.
  • Jul 15, 2017
    Love this show Amazing Can't wait to see what happen next
  • Apr 12, 2017
    Best show at the moment

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