SERIES ONE: Lives and careers are on the line in this thrilling police anti-corruption drama following the investigation into DCI Tony Gates (Lennie James). Gina McKee, Vicky McClure, Martin Compston, Adrian Dunbar, Craig Parkinson and Neil Morrissey also star. SERIES TWO: When a police convoy is fatally ambushed, AC12 pursue the sole surviving officer, DI Lindsay Denton (Keeley Hawes). Cast also includes Vicky McClure, Martin Compston, Adrian Dunbar, Craig Parkinson, Neil Morrissey, Mark Bonnar and Jessica Raine. SERIES THREE: When Firearms Officer Sergeant Danny Waldron (Daniel Mays) shoots dead a hardened criminal, AC12 suspect foul play. Also starring Vicky McClure, Martin Compston, Adrian Dunbar, Craig Parkinson, Neil Morrissey, Leanne Best, Arsher Ali and Will Mellor.