DS Sam Casey, brought in to investigate the drive-by shooting of DS Matt Devlin, initially assumes that drug dealer Mark Ellis was involved. He and DS Ronnie Brooks discover that the gunman was targeting police officers because of a long-standing grievance against the police. Prosecutors Jake Thorne and Alesha Phillips must convince a jury that the defendant is a murderer and not a victim of police racism.moreless
A police forensics lab technician is stabbed to death in her home. Another victim, Lucy Kennard, comes forward and identifies her attacker. She and DS Casey become intimate, but she is not what she seems.
Two armed robbers shoot a man dead and take a taxi driver hostage after fleeing a fast food restaurant. DSs Casey and Brooks track down one of the men, but he demands immunity from prosecution for murder in exchange for information about the whereabouts of the cabbie. The CPS agrees, but when the kidnapped man is found dead, Jake Thorne tries to press ahead with the murder charge.moreless
A criminal makes a deathbed confession to the murder of a teenaged girl, which poses problems for DS Brooks as he was involved in the arrest and conviction of the victim's father some 14 years before. Reopening the investigation, Brooks and Casey identify another suspect, but Brooks's conduct during the original inquiry come under scrutiny in court.moreless
An elderly janitor is murdered, and the precise nature of the crime are detailed in a manual he purchased three weeks earlier. Brooks and Casey track down the killer, but the defence team gets a vital piece of evidence excluded from the trial. Thorne and Phillips uncover a second suspect.
Casey and Brooks attend the scene when a barman is found shot dead in his car, then respond to an emergency call relating to a violent argument in an office. Elsewhere, at the crown court, a murder trial is thrown off track when a defendant alleges that he was intimidated into making a false confession by one of the detectives.moreless
A video of the assault and shooting of a teenage girl has gone viral. Brooks and Casey must identify the victim and track down her attackers. Without any forensic evidence, the prosecution hinges on the evidence of a key witness.
DI Wes Leyton and DS Ronnie Brooks investigate the death in his court cell of Finn Tyler. The suspended DS Casey spends the day with his son. New colleagues Jake and Kate get to know one another over drinks.
Brooks and Casey investigate the death of a woman whose body is recovered from the Thames. Initial enquiries focus on the dead woman's abusive ex-husband, but when they uncover a relationship between her second husband and her daughter it suggests a possible motive for murder.
An elderly woman is found dead in her flat, apparently killed during a robbery gone wrong. The dead woman's granddaughter, however, implicates the live-in carer, who in turn suggests that the granddaughter had tried been trying to starve the woman to death.
The estranged father of a boy with leukaemia is found shot dead in his hotel room. DSs Casey and Brooks discover that the dead man was carrying a number of secrets, and turn their attention to the dead man's father-in-law.
A suicidal man drives across a railway line, causes a fatal train crash, although he survives. His defence barrister, Kate Barker, argues that he is not culpable by reason of mental illness. When the defendant is found dead in his cell, DS Casey is implicated. Henry Sharpe decides to recruit Kate to the CPS.moreless
A homosexual man is found beaten to death and his adopted son has gone missing. Brooks and Casey arrest the child's biological parents, who give conflicting stories. Kate Barker's emotional investment in the case threatens to undermine the prosecution.