Playback is currently unavailable for S4 E1 · Episode 1. Episode details remain available below.
Line of Duty
A drama about the investigations of AC-12, a controversial police anticorruption unit.
- Created by:
- Jed Mercurio
- Cast:
- Martin Compston, Vicky McClure, Adrian Dunbar, Gregory Piper
- Language:
- English
- Country:
- United Kingdom
- Network:
- BBC One, BBC Two
Episode guide
Seasons
Series 4
Episodes
E01
Episode 1
★ 8.1Episode 1
2017-03-26 · 58mDCI Roz Huntley is under intense pressure from her superiors to apprehend a serial murderer after months of fruitless investigation.
Current episode
E02
Episode 2
★ 8.1Episode 2
2017-04-02 · 60mAC-12 crank up their investigation into Operation Trapdoor. Kate makes progress in her undercover role.
Watch progress · Not tracked
E03
Episode 3
★ 8.4Episode 3
2017-04-09 · 60mAs 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.
Watch progress · Not tracked
E04
Episode 4
★ 8.4Episode 4
2017-04-16 · 59mRoz'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.
Watch progress · Not tracked
E05
Episode 5
★ 8.3Episode 5
2017-04-23 · 59mDCI Roz Huntley struggles to allay her husband's suspicions. AC-12 find a new angle to pursue their case against her.
Watch progress · Not tracked
E06
Episode 6
★ 8.8Episode 6
2017-04-30 · 58mWhile Nick Huntley faces lengthy questioning, AC-12 remain convinced of Roz's involvement.
Watch progress · Not trackedCast
Martin Compston
DS Steve Arnott
Vicky McClure
DC Kate Fleming
Adrian Dunbar
SI Ted Hastings
Gregory Piper
Ryan Pilkington
Nigel Boyle
DI Ian Buckells
Kelly Macdonald
DCI Jo Davidson
Owen Teale
Philip Osborne
Anneika Rose
Farida Jatri
Matthew Forsythe
Suitor
Shalom Brune-Franklin
DC Chloë Bishop
