Line of Duty

Season 4 2017
TV-MA

  • 2017-03-26T20:00:00Z on BBC Two
  • 1h
  • 5h 54m (6 episodes)
  • United Kingdom
  • English
  • Drama, Mystery, Crime
The fourth series sees AC-12 facing their most devious opponent yet! Under pressure from her superiors, DCI Roz Huntley charges a young man with a series of murders after months of fruitless investigation, but is he guilty? The Chief Forensic Investigator has doubts and turns to AC-12.

6 episodes

Season Premiere

2017-03-26T20:00:00Z

4x01 Episode 1

Season Premiere

4x01 Episode 1

  • 2017-03-26T20:00:00Z58m

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

2017-04-02T20:00:00Z

4x02 Episode 2

4x02 Episode 2

  • 2017-04-02T20:00:00Z1h

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

2017-04-09T20:00:00Z

4x03 Episode 3

4x03 Episode 3

  • 2017-04-09T20:00:00Z1h

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.

2017-04-16T20:00:00Z

4x04 Episode 4

4x04 Episode 4

  • 2017-04-16T20:00:00Z59m

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.

2017-04-23T20:00:00Z

4x05 Episode 5

4x05 Episode 5

  • 2017-04-23T20:00:00Z59m

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

Season Finale

2017-04-30T20:00:00Z

4x06 Episode 6

Season Finale

4x06 Episode 6

  • 2017-04-30T20:00:00Z58m

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

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