Line of Duty. Tony Gates. Episode 2. 58m. Having been duped into covering up Jackies hit and run, Gates desperately tries to sever ties with her as Arnott and Fleming close in on his secret. Episode 3. 59m. With Flemings help, the anticorruption team tries to trap Gates into revealing his involvement in covering up Jackies crimes. Episode 4. 59m. Desperate for proof of Gatess corruption, Fleming pushes her relationship with him to the limit, causing Morton to question her loyalty. Episode 5. 58m. With Gates on the run, the anticorruption team is under pressure to close the case, and Arnott faces tough decisions about where his loyalties lie. See episodes of your favorite MTV Shows. Watch the latest Music Videos from your favorite music artists. Watch He`S On My Mind Online. Get uptodate Celebrity and Music News. Innovations 360 takes you on an interactive tour of the 2017 Ford Super Duty. Click to the unique highstrength, militarygrade, aluminumalloy body, the bestin. Watch Free Full TV Shows Online. Streaming TV. Free TV Shows. Line of Duty series 4 finale Cast face financial penalties if they reveal tonights plot. They might even face financial penalties. Martin Compston, who plays Detective Sergeant Steve Arnott, revealed he was surprised by the ending, which viewers will see on BBC One tonight at 9pm. The 3. 2 year old actor said I thought it was a bit of genius. It literally feels like, at the end of this series, were just at the beginning. Thats Jeds master plan. When we end this one, now its game on. It comes as writer Jed Mercurio announced that he had considered killing off Arnott halfway through the current series. Mercurio explained I felt it was more interesting to explore the aftermath of the serious and potentially life changing injury rather than just have a clean exit.