If you think catching criminals is tough, try catching police officers.
A drama about the investigations of AC-12, a controversial police anticorruption unit.
Line of Duty (Season 4)
Episode 1 8.3
Air date: 2017-03-26
Runtime: 58 min
Overview: DCI Roz Huntley is under intense pressure from her superiors to apprehend a serial murderer after months of fruitless investigation.
Episode 2 8.2
Air date: 2017-04-02
Runtime: 60 min
Overview: AC-12 crank up their investigation into Operation Trapdoor. Kate makes progress in her undercover role.
Episode 3 8.6
Air date: 2017-04-09
Runtime: 60 min
Overview: 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.
Episode 4 8.7
Air date: 2017-04-16
Runtime: 59 min
Overview: 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.
Episode 5 8.3
Air date: 2017-04-23
Runtime: 59 min
Overview: DCI Roz Huntley struggles to allay her husband's suspicions. AC-12 find a new angle to pursue their case against her.
Episode 6 8.9
Air date: 2017-04-30
Runtime: 58 min
Overview: While Nick Huntley faces lengthy questioning, AC-12 remain convinced of Roz's involvement.
Seasons
Episodes 5
Episodes 6
Episodes 6
Episodes 6
Episodes 6
Episodes 7
Episodes 2