Line of Duty SPOILER: First look at episode 4 in new snaps Laura Fox For Mailonline © Provided by Daily Mail MailOnline logo
Line of Duty fans have been given their first glimpse at episode 4 as AC-12 begin to close in on killer PC Ryan Pilkington.
In new snaps from Sunday s show, the copper can be seen looking worried and concerned, fearing his cover could be blown after trying to kill Terry Boyle in the previous episode.
It comes as the upcoming episode will also see AC-12 make a major breakthrough, though an official synopsis also reveals the team hit a road bump when an attempt to interview a key witness goes horribly wrong.
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