Amy Hill, a 19-year-old student, is strangled and her body dumped on open ground in the city. New police partners, DI Jim Neal and DS Ava Merry are called in to investigate this brutal crime. The last person to see Amy alive was Simon, the son of a family friend, but before he can be properly questioned he disappears. Detectives Neal and Merry are led on a trail of shocking family secrets and crimes. Can this duo track down the murderer before anyone else dies? Stopping this tragic cycle of violence will put DS Merry’s life at risk in a thrilling and heart-stopping finale.

Meet Jane Bell. After her husband dies she leaves her job as a teacher to volunteer as a special constable with the police. On her very first shift Jane is called to the scene of a murder. A young man has dragged himself to the top of Greestone Stairs to die. Following her instincts, Jane finds herself becoming very involved in the case... For Detective Steph Warwick, specials have no place in a murder investigation - and this upstart rookie is meddling where she doesn’t belong.

1988. The body of Moira Mackie, a St Andrews University student, is found on a clifftop path. Her ex-boyfriend is found days later, hanged in his uncle’s garage with a suicide note confessing that he killed her. The case is abruptly closed. Thirty years later, Ros Maitland has seemingly moved on from the horrific murder of her housemate Moira. Then her daughter takes up a place at the same university, and old demons reawaken.

First a shooting, then a grisly discovery on the common.... Police partners, D.I. Calladine and D.S. Ruth Bayliss race against time to track down a killer before the whole area erupts in violence. Their boss thinks it's all down to drug lord Ray Fallon, but Calladine's instincts say something far nastier is happening on the Hobfield housing estate. Can this duo track down the murderer before anyone else dies and before the press publicise the gruesome crimes?

Detective Sara Hirst has moved from London to Norfolk Police's Serious Crimes Unit. She wants to know the truth about her father, who has connections to the area. Her mother won't tell her the real story. A new job. A new place. Same old problems. Sara's first call-out is to a decomposing body discovered in a ditch on a local farm. How does the murder relate to a recent spate of thefts? Who wanted the victim dead? Then the case grows very personal.

Callum is lured to an isolated boathouse by an attractive older woman. When she gets him alone, she knocks him out with a single blow. Surrounded by hills and lakes, Still Waters is home to a close-knit community of wealthy retirees. It's an unlikely setting for violence. The police don't take Callum's disappearance seriously: he's 24-years-old, after all. But Callum's mother, a Still Waters resident, knows that something is very wrong. Then a body is discovered floating in the lake. Head bashed in. But it's not Callum. And someone tweets: Come out to play one last time, Alice. 

On a wild and stormy night on England’s south coast, ambitious young police constables Rutherford Barnes and Harriet Holden are doing the rounds when they see a burglar fleeing the scene of the crime. And the location is Harriet’s house. The ground floor is ransacked. Scrawled in red across one wall are the words: DEAD COPS SLEEP LONG. Then a few days later, Harriet’s battered body is discovered in a shabby seafront hotel. Newly promoted to detective, Barnes vows to discover who killed his partner, and why.

A spate of robberies targeting elderly women is disturbing enough, but especially so in a town as peaceful and sedate as Leek. Then one attack turns to murder, and Detective Inspector Joanna Piercy is called to the eerily named Spite Hall. For the body of Nan Lawrence has been found bludgeoned to death, lying over the tapestry she was in the process of embroidering. When Joanna calls on Nan's neighbours she is surprised to find that they are none other than the old lady's estranged brother and his teenage grandson, neither of whom seems particularly willing to co-operate.

The body of a blonde young man found in the canal is discovered to be that of a journalist who had been claiming he was onto the story of a lifetime. The area where he was murdered turns out to be subject to a land dispute. A young woman is adamant she remembers a childhood twin brother, but her father swears she’s an only child. And now a second young blonde is missing. Rachel King and her East Manchester CID team must determine what links this all together - or are they being led to draw connections which aren’t there? And if so, who is pulling their strings? 

Detective Kate Hamblin is doing surveillance on the Somerset Levels, trying to catch a crazed arsonist. She leaves the van for a moment. Then it goes up in flames, killing her two colleagues. Kate is accused of abandoning them and is excluded from the murder hunt and effectively suspended from duty. She is desperate to nail the killer herself and clear her name. She risks all by entering into an unholy alliance with the murder team's chief suspect. Kate finds herself not only targeted in a personal vendetta by her own DCI, but stalked by the very killer she is pursuing.