When three people are brutally murdered in a shop in central London and a fourth left for dead, Matt and Ronnie are up against the clock to find the killer who they fear could strike again at any moment. The nature of the attack was frenzied and brutal with the killer using a bayonet to slay his victims. With this information and a photofit, Matt and Ronnie are quickly must identify the killer before they strike again. James assumes a straightforward case ahead of him. However, things take an unexpected turn when he learns that the defendant has brilliant legal support. With the case for defence looking very strong, James' only hope is to convince a deluded defendant to accept responsibility for his crimes.

This week's case hits close to home for DS Matt Devlin when investigating the death of a police officer, and his best friend, PS Pete Garvey. Devlin and Garvey had known each other since childhood and when Matt discovers Pete had recently been in contact with their childhood parish priest Jonathan Nugent (Matthew Marsh), his suspicions are alerted as Pete claimed to have been sexually abused by him as a child. With nothing but suspicions and unfounded rumours to go on, a murder charge cannot be brought against Nugent. Now a married man with a family of his own, can Matt really be sure they've got the right man? James and Alesha take an unusual approach in order to bring a charge - any charge - against the accused in a desperate attempt to get the case home.

The mystery surrounding the stabbing of student, Archie Rahman, has our cops chasing their tails when the only clue they have to go on is a library book checked out on the day of his murder. Two students connected to the book have given an alibi for each other but one of them is lying and it's down to our cops to find out which one. When the perpetrator eventually confesses and claims to have acted in self-defence, Alesha is forced to face past demons. It's a delicate balancing act for James who is tasked not only with prosecuting the offender but also with defending a dead victim. Unless the truth of what happened that day is uncovered, a murderer could walk free or an innocent victim be wrongly convicted.

For two years, Stephanie Blake (Michelle Bonnard) has been stalked by a man who calls himself 'Giovanni'. She knows nothing about him but he knows everything about her right down to the finest details of what she keeps in her bathroom cabinet. Over time, his e-mails and calls have become more intimidating but without an actual physical threat against her, there is very little the police can do for Stephanie. After initial investigations lead nowhere, the police are forced to abandon the case. Then something happens which shakes our police heroes to their very core. What should be a straightforward prosecution becomes complicated when a key piece of evidence is excluded. Up against Defence Barrister Evelyn Wyndham (Anna Chancellor), James has his work cut out for him. When one of the cops becomes a key witness for the prosecution, the question arises of whether his motivation is genuine or borne out of guilt. Will he perjure himself in order to get the right result?

The police investigate the murder of a former professional footballer, Robert Nichols, who is found lying beside his car bludgeoned to death. He was on his way to meet his sister and was apparently replacing a flat tire when the attack occurred. The only thing taken was his very expensive watch. They manage to trace a passerby, Mike Jones, who initially denies having seen anything but eventually admits he was helping Nichols fix his flat. The police are naturally suspicious and believe Jones may have been the perpetrator. In checking into Nichols's background however, they learn he was a big-time gambler and owed well-known mobster Don Marsh a quarter of a million pounds. Jones obviously has good reason to lie since he saw who killed Nichols but the mobster has made it clear that his life is in danger if he testifies.

A judge is badly injured when she is shot during what appears to be a car robbery. The investigation reveals that a hitman had been hired to kill her.

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DS Devlin and DS Brooks investigate the murder of a 13 year-old boy boy, Sean Monroe, the son of a fellow police officer who was killed and put down a storm drain. A note found on the body points to the work of Andrew Dillon, who was sentenced for an earlier racial murder and is serving his sentence. The racial motivation for the killing seems confirmed when a second boy, Dev Desai, is found strangled with the same note in his pocket. However, their investigation leads to a security guard, Marcus Wright, who admits to having encounters with both boys at the shops where he works. He says the boys deaths were God's will and he was simply doing God's work. If Wright is to be believed, it means that Dillon was wrongfully convicted. The case becomes personal when James Steel is accused of having purposely buried a witness statement that would have likely exonerated Dillon. He finds himself in dock but the judge allows him to conduct his own defense.

A drive-by shooting outside the Old Bailey leaves one police officer dead and another wounded in what appears to be a targeted attack on a witness in an attempted murder trial. However, Ronnie and the team are surprised to learn the gunman was specifically targeting police officers, believing his family victims of a police cover-up. The defense team argues their client has been subjected to racism by the police. Can Jake and Alesha convince the jury that the defendant ought to be tried as a murderer and not a victim?

A bungled robbery leads to an innocent hero being shot dead and a hostage with a potentially life threatening medical condition being seized by two armed gunmen. It's up to Ronnie and Sam to beat the clock and find the hostage in just ten hours.

When a petty criminal makes a deathbed confession to the murder of a teenage girl, Ronnie is left shaken to the core as he is forced to reopen a case he thought he had put to bed fourteen years ago.

The murder of an elderly janitor in his home is carried out with such precision and planning that the only evidence the killer leaves is designed to lead the detectives around in circles.

A murder investigation is launched when a concerned citizen alerts the police to a shocking video that is spreading like wildfire on the web, in which a teenage girl is attacked and shot.

Over the course of one long day, the team works on three separate cases, including tracking a serial killer, intervening in a family dispute turned murderous, and disproving an accusation of police intimidation. Will all of the team make it through with their careers intact?

The frenzied stabbing of a police forensic lab technician unsettles the team in a way they never expected when Detective Sam Casey falls for the killer's next intended victim.

The terrifying CCTV image of a toddler being led to his death haunts this episode of Law & Order UK which deals with the difficult and morally complex issue of children who kill. As a society, we are very unforgiving of child killers but if the killers themselves are only children, it begs the question - who really is responsible for the crime? With two children in the frame, each blaming the other, can forensic evidence prove who is guilty of strangling little Conor to death? In an emotionally gut wrenching episode, George defies his superiors and instead takes instruction from the victim's mother who has a surprising point of view on the crime. Can the justice system, and ultimately the government, afford to be lenient?

Survivor begins with the investigation into the murder of Prison Officer Charlie Tyner who is found shot dead on a council estate in Hackney. It soon comes to light that, rather than being the good clean officer of Her Majesty's Prison Service we first believe him to be, Charlie Tyner is corrupt and taking advantage of his position in prison in a number of ways. There are plenty of prisoners inside with reason enough to want to kill Charlie but, being in prison, they have solid alibis so who killed Charlie and why? Crown Prosecutors James Steel and Alesha Phillips find themselves at odds with their boss, George Castle, who is keen to bring to justice the killer of a prison officer. James and Alesha can't help but feel Tyner's abuse should be brought into consideration when charging the accused. And they have their eye on a much greater prize - a career criminal connected to Tyner who has evaded the justice system for too long. Can James and Alesha convince the key witness to give evidence against a man she claims to love?

When the body of a 16 year old girl is found dead in her home in the middle of the afternoon, the investigating police cannot be sure a crime was even committed. With no forensic evidence and nothing to suggest the victim didn't die of natural causes, Matt and Ronnie question why they have been called out in the first place. However, the mother's victim believes she was raped because she never slept naked. On further investigation, an unlikely murder weapon is uncovered and a likely suspect - someone with whom Crown Prosecutor James Steel has a history. Determined the accused is guilty, James pursues him with every power available. Like a man possessed, he pushes the boundaries of the law to the legal limit. Is our hero persecuting an innocent man or justified in his convictions?

The case starts with the murder of a doctor in the car park of the hospital where she works. What initially seems like a crime of passion soon unravels into a conspiracy involving senior government officials. Risking their careers, James and Alesha must get to the bottom of this case before another life is destroyed.

The police investigate a suspicious fire that resulted in the death of 13 year-old Ian Parnell. His mother Megan managed to escape but the pathologist confirms that Ian died of smoke inhalation. The boy was severely disabled and unable to care for himself. They follow several false leads including an absent father who is behind on his support payments and a couple of neighborhood lads who were known to have harassed the dead boy. In the end, the evidence points to the mother. In court James and Alesha come up against a barrister who refuses all reasonable offers to settle the case. His disdain for his client leads him to mount a series of increasingly ridiculous defenses. When the truth finally emerges, the Crown prosecutors face a moral dilemma.

Was the arson attack on a Turkish club claiming 17 lives racially motivated - or something even more sinister? James Steel and Alesha Phllips struggle to build the case.

Maids find blood-stained sheets but no body in a hotel room, booked with a credit card stolen from businessman Charles Hutton by Rufus Barton, a school classmate and secret lover of Hutton's daughter Georgia.

Brought into A&E with flu-like symptoms and leaving in a body bag, Suzanne Morton’s death is treated as suspicious by DS Ronnie Brooks and DS Matt Devlin as they investigate a hospital department which has had three such untimely deaths within six months. With an extremely busy A&E ward the night Suzanne died, can our heroes find the killer before the killer finds their next victim? Senior Crown Prosecutor, Jake Thorne is pulled in opposite directions when the chief suspect in the case claims to have been framed for the murder by others within his department. With a conspiracy of silence permeating the hospital staff, it’s clear that there’s more to this case than meets the eye and only by penetrating the web of professional loyalties can the truth emerge

A night club peppered with bullets. Two victims bleeding out on the floor. The start of a deadly gun rampage through the streets of London. With the media swarming all over the case and a hostage to find, DS Matt Devlin and DS Ronnie Brooks are up against the clock as they try to track down the Bonnie and Clyde duo wreaking havoc on the city streets. Capture is far from closure when defence barrister, Phyllis Gladstone, takes the case on, arguing that one of the pair was more innocent victim than violent killer. Did the defendant act out of fear - beaten and bullied into submission by her partner-in-crime, too terrified to escape and alert the police? With two sides to every story, the team are under pressure to make sure someone is held responsible for a murderous spree that cost five lives.

When the body of a woman is pulled from the Thames after her car is found in suspicious circumstances, the victim's abusive ex-husband seems to be the prime suspect.