DS Steve Arnott is arrested on suspicion of murder, but continues to protest his innocence. Does DC Kate Fleming's undercover operation hold the key to Steve's guilt and the identity of the Caddy?moreless
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.
AC-12 have uncovered a criminal network operating within the force, and DCC Dryden is charged with conspiracy to pervert the course of justice. While DS Arnott is convinced that DI Denton was set up, DC Fleming is determined to prove her guilt.moreless
While DI Denton fights for her life, DS Arnott uncovers new information about her personal life. Now convinced of her innocence, he risks his career to pursue a high-level target.
With the officers from AC-12 under pressure to identify the police mole, DI Denton implicates DCC Dryden in a conspiracy, but has she put herself in danger?
Lindsay Denton is remanded in custody, and is seriously assaulted in prison. Matt Cottan, now a DI with AC-9, is seconded to help with the investigation into the attack on the convoy, discomfiting both Arnott and Fleming. The team is concerned at the absence of any apparent connection between Denton and the victims. Elsewhere, the mutilated body of a teenaged girl is discovered.moreless
Still reeling from the events at the hospital, Steve Arnott continues the investigation into DI Denton, while she and the undercover Kate Fleming look into the disappearance of a 15-year-old girl. The tenacious Denton also carries out her own investigation into the backgrounds of the team from AC-12, and it appears that their conduct might compromise the case against her.moreless
A police convoy is ambushed, leaving three officers dead and a protected witness on the critical list. AC-12 is called on to investigate the possibility of a leak from a police source. As the only officer to survive the attack, DI Lindsay Denton is a valuable witness, but she is soon identified as the prime suspect.moreless