Line of Duty Season 4
A drama about the investigations of AC-12, a controversial police anticorruption unit.
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Line of Duty Season 4 Full Episode Guide
While Nick Huntley faces lengthy questioning, AC-12 remain convinced of Roz's involvement.
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DCI Roz Huntley struggles to allay her husband's suspicions. AC-12 find a new angle to pursue their case against her.
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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.
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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.
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AC-12 crank up their investigation into Operation Trapdoor. Kate makes progress in her undercover role.
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DCI Roz Huntley is under intense pressure from her superiors to apprehend a serial murderer after months of fruitless investigation.
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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.
World Productions , BBC Drama Productions
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