Episode 4: Roz's husband Nick is brought in for questioning by AC-12. But while Nick denies any involvement in Steve's attack, his suspicions about Roz mount. (S4 Ep4)
Episode 4: Roz's husband Nick is brought in for questioning by AC-12. But while Nick denies any involvement in Steve's attack, his suspicions about Roz mount. (S4 Ep4)
Episode 3: As AC-12 wrestle with the new forensic evidence casting doubt over Tim Ifield, Kate is approached by another woman claiming to have been assaulted by Michael Farmer. (S4 Ep3)
Episode 3: As AC-12 wrestle with the new forensic evidence casting doubt over Tim Ifield, Kate is approached by another woman claiming to have been assaulted by Michael Farmer. (S4 Ep3)
Episode 1: DCI Roz Huntley is under intense pressure from her superiors to apprehend a serial murderer after months of fruitless investigation. (S4 Ep1)
Episode 1: DCI Roz Huntley is under intense pressure from her superiors to apprehend a serial murderer after months of fruitless investigation. (S4 Ep1)
Episode 6: Arnott is arrested on suspicion of murder but continues to protest his innocence. Does DC Fleming's undercover operation hold the key to the identity of the Caddy? (S3 Ep6)
Episode 3: DS Arnott believes there is a secret in Danny's past, but while DI Cottan is commended for cracking the Waldron case, the spotlight falls on Arnott's conduct in a previous enquiry. (S3 Ep3)
Episode 2: After the drugs house shooting, Kate uses her undercover role to increase the pressure on Dannys armed response unit. A previous AC12 investigation comes under legal scrutiny. (S3 Ep2)
Rest in Peace: AC12's investigation exposes a criminal gang within the police. Steve is convinced of Lindsay's innocence, and Kate is determined to prove she had a role in the ambush. (S2 Ep6)
Bail Hearing: Lindsay is denied bail and finds herself targeted in prison. Desperate, she tells Kate about a relationship with an executive police officer. (S2 Ep3)
In the Line of Duty: AC12's Kate is planted undercover in Lindsays Missing Persons Unit, but Lindsay in turn gathers compromising evidence against the anti-corruption team. (S2 Ep2)
Status Zero: An ambush on a police convoy leaves three officers dead and a witness fighting for his life. AC-12 turn their spotlight on the officer who led the convoy but escaped unscathed. (S2 Ep1)
Terror: Pressure mounts on Gates as he is hounded by blackmailers. Desperate for proof of Gates corruption, Fleming pushes their relationship to the limit. (S1 Ep4)
After being attacked, Gates tampers with evidence as the police rush to the scene. But Arnott remains suspicious, convinced Gates played a part in Jackie's disappearance. (S1 Ep3)
After a bungled raid, Steve Arnott is transferred to an anti-corruption squad, where superintendent Ted Hastings gives him a 'very special' case to investigate. (S1 Ep1)
Episode 6: Arnott is arrested on suspicion of murder but continues to protest his innocence. Does DC Fleming's undercover operation hold the key to the identity of the Caddy? (S3 Ep6)
Episode 5: AC-12's loyalties are divided when DS Steve Arnott comes under scrutiny from his colleagues. With his career in jeopardy, Arnott turns to an unlikely source for help. (S3 Ep5)
Episode 5: AC-12's loyalties are divided when DS Steve Arnott comes under scrutiny from his colleagues. With his career in jeopardy, Arnott turns to an unlikely source for help. (S3 Ep5)
Episode 3: DS Arnott believes there is a secret in Danny's past, but while DI Cottan is commended for cracking the Waldron case, the spotlight falls on Arnott's conduct in a previous enquiry. (S3 Ep3)
Status Zero: An ambush on a police convoy leaves three officers dead and a witness fighting for his life. AC-12 turn their spotlight on the officer who led the convoy but escaped unscathed. (S2 Ep1)
After being attacked, Gates tampers with evidence as the police rush to the scene. But Arnott remains suspicious, convinced Gates played a part in Jackie's disappearance. (S1 Ep3)