Line of Duty , Season 4 : Episode 6

Line of Duty

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Episode 6: Homicide detectives question Nick, but Steve and Kate remain convinced of Roz's involvement. As AC-12 comes closer to the truth surrounding Tim Ifield's murder, the team also hopes to unmask Balaclava Man, but the ramifications could be wide-reaching within the police force.

Starring: Martin Compston, Vicky McClure, Adrian Dunbar.