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TWDU
Line of Duty
S4, E1
Line of Duty: Season 4, Episode 1
TV-14
After months of hunting a serial killer, DCI Roz Huntley faces intense pressure to apprehend a suspect. Michael Farmer is caught and charged with the crimes, but doubts about the young man's guilt lead the chief forensic investigator to AC-12.
Full Episode
Original Air Date: August 6, 2020
More Full Episodes From This Season
S4, E1
Line of Duty: Season 4, Episode 1
After months of hunting a serial killer, DCI Roz Huntley faces intense pressure to apprehend a suspect. Michael Farmer is caught and charged with the crimes, but doubts about the young man's guilt lead the chief forensic investigator to AC-12.
S4, E2
Line of Duty: Season 4, Episode 2
AC-12 continues its investigation into Operation Trapdoor, concerned that Michael Farmer will go to jail for crimes he didn't commit. But, suddenly the case falters when the key informant goes missing.
S4, E3
Line of Duty: Season 4, Episode 3
AC-12 uncovers holes in the case against Michael Farmer and suspects that the real killer could still be at large. As the team struggles to sort evidence, Steve questions Roz's husband, to recall his wife's whereabouts.
S4, E4
Line of Duty: Season 4, Episode 4
Still suspicious of Nick, AC-12 interrogates him, but new forensic anomalies puts the spotlight back on Roz. The case against her seems solid until Roz starts dismantling the evidence with inside information of her own.
S4, E5
Line of Duty: Season 4, Episode 5
Roz struggles to assuage her husband's suspicions, and AC-12 finds a new angle in its case against her. Nick's suspicions over his wife's guilt continue to grow, and a cold case gives AC-12 another way to challenge Roz.
S4, E6
Line of Duty: Season 4, 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 the Balaclava Man.
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