AC-12 is a fictional character portrayed by Mark Quigley in the TV series Line of Duty.
They appear in 1 episodes out of a total of 36 aired
Episodes1
Royal Hunting Ground
episode S4.E6 april 2017AC-12 pit their wits against Roz Huntley in a climactic duel to find Tim Ifield's murderer and unmask Balaclava Man.