Ep 3. Episode 3

AC-12 continue to investigate the case of Ronan Murphy, who was killed during a police raid on his flat. The latest evidence seems to point towards a colleague of Murphy's, PC Hari Bains, being the one who tipped off Murphy and caused the raid to fail. However, Bains denies any wrongdoing and claims that he was actually trying to help the investigation.

Meanwhile, DI Cottan is still under suspicion from his colleagues at AC-12 after he was caught lying about his personal relationship with Murphy's widow. He is placed under surveillance, and his every move is closely monitored.

The investigation takes a dramatic turn when a new witness comes forward with some crucial information. However, the witness is reluctant to reveal their identity, and it soon becomes clear that they are in danger. AC-12 must work quickly to protect the witness and piece together the evidence before it's too late.

As the investigation progresses, tensions rise within AC-12 as different members of the team have differing opinions on who should be the focus of the investigation. Meanwhile, the team must continue to navigate the political landscape of the police force and deal with the fallout from the failed raid on Murphy's flat.

Episode 3 of Line of Duty season 3 is a tense and gripping episode that keeps viewers on the edge of their seats. With twists and turns at every corner, and a cast of complex and fascinating characters, Line of Duty delivers another thrilling installment in this popular police drama.