The Night Hawks, a group of metal detectorists, are searching for buried treasure when they find a body on the beach in North Norfolk. At first Nelson thinks that the dead man might be an asylum seeker but he turns out to be a local boy, Jem Taylor, recently released from prison. Ruth is more interested in the treasure, a hoard of Bronze Age weapons. Nelson at first thinks that Taylor's death is accidental drowning, but a second death suggests murder.

Brighton, 1950: When the body of a girl is found, cut into three, Detective Inspector Edgar Stephens is reminded of a magic trick: the Zig Zag Girl. The inventor of the trick, Max Mephisto, is an old friend of Edgar's. When the dead girl turns out to be known to him, Max decides to help Edgar investigate.

Clare Cassidy is no stranger to murder. As a literature teacher specialising in the Gothic writer R. M. Holland, she teaches a short course on it every year. Then Clare's life and work collide tragically when one of her colleagues is found dead, a line from an R. M. Holland story by her body. The investigating police detective is convinced the writer's works somehow hold the key to the case.s....  

When a girl’s body is found strangled, raped, and horrifically mutilated by a boat’s propeller, deep in the heart of the Norfolk Broads, newly arrived Detective Inspector John Tanner is asked to assist with the investigation. At first, all the evidence points to a man who had a multi-million-pound reason to kill her. But when an alibi is produced from an unexpected source, and another body appears at the base of a slipway, Tanner finds himself turning to local girl Detective Constable Jenny Evans for help. 

DS Wesley Peterson, newly arrived in the West Country town of Tradmouth, has his hands full when a child goes missing and a young woman is brutally murdered on a lonely cliff path. Then his old friend, archaeologist Neil Watson, unearths the skeletons of a strangled woman and a newborn baby in the cellar of an ancient merchant's house nearby. As the investigation continues, Wesley begins to suspect that these deaths, centuries apart, may be linked by age-old motives of jealousy, a sexual obsession and desperate longing.

In the present, an old fisherman is found dead by the shoreline and a stranger with a mission moves into a shabby Kinloch flat/ Meanwhile, D.C.I. Jim Daley is trying to help Brian Scott stay sober, and the good people of Kinloch are still mourning the death of one of their own. As past and present collide, Daley finds himself face to face with old friends and foes. Memories can only last as long as those who keep them, and ghosts will not be silenced.

Was the biggest case of his career the worst mistake he ever made? Ten years ago, DCI Jack Logan stopped the serial child-killer dubbed "Mister Whisper", earning himself a commendation, a drinking problem, and a broken marriage in the process...When another child disappears a hundred miles north in the Highlands, Jack is sent to lead the investigation and bring the boy home. But as similarities between the two cases grow, could it be that Jack caught the wrong man all those years ago?

Meet DCI Lesley Clarke. She’s a straight-talking city copper who doesn’t suffer fools gladly…and she’s been transferred to rural Dorset. After being injured in a bomb attack, Lesley is presented with a choice - early retirement, or a period of respite in a calmer location. But things don’t stay calm for long. Before she’s even started her new job, Lesley is dragged into investigating a murder at one of England’s most iconic landmarks, the imposing Corfe Castle.

Detective Chief Inspector Harry Grimm is forced to take leave from Bristol’s Major Investigations Team when his boss, tired of Harry chasing the ghost of his murderous father, sends him north on secondment. Used to city life and high stress, Harry fears his life will now be spent handing out speeding tickets, finding lost sheep, and directing tourists. But when a local teenager runs away, Harry finds himself pulled into an investigation much worse than anyone could have ever expected. 

With a glittering career, spanning several decades representing the privileged and the wealthy, behind him the focus of the investigation inevitably turns toward cases and clients past and present, but was his death linked to his work or is there another, darker and far more sinister motive at play? No matter how successful, privileged or elevated in society one person can be, one universal rule applies; we all bleed the same.

After an elite criminal profiling unit is shut down amid a storm of scandal and mismanagement, only one person emerges unscathed. Forensic psychiatrist Doctor Alexander Gregory has a reputation for being able to step inside the darkest minds to uncover whatever secrets lie hidden there, and soon enough he finds himself drawn into the murky world of murder investigation. In the beautiful hills of County Mayo, Ireland, a killer is on the loose. Panic has a stranglehold on its rural community, and the Garda are running out of time. 

Summer in the Lincolnshire Wolds and Clarice is rung by her friend Louise, asking whether she can look after Susie, her son's lively Boxer, as 41-year-old Guy has gone missing from the family home. His mother thinks he has been suffering from depression but more worryingly, in his professional life, he had been working on a high-profile case, defending a known criminal. His home life was beset with problems too, which is why his mother has asked Clarice to look after the dog; Charlotte, Guy's wife, just can't cope with her as well as their three daughters.

DI Nikki Galena: A police detective with nothing left to lose, she's seen a girl die in her arms, and her daughter will never leave the hospital again. She's gotten tough on the criminals she believes did this to her. Too tough. And now she's been given one final warning: make it work with her new sergeant, DS Joseph Easter, or she's out.

A teenage girl is found murdered, encased in glass. Detective Dove Milson is called out to a chilling murder scene by the coast. The murder is a replica of the work of a serial killer known as the Glass Doll Murderer, who entombed his victims in glass to watch them die. He would've be the prime suspect, but he's already dead. The kicker? Dove's own niece was one of the Glass Doll's original victims. 

DI Nathaniel Caslin’s life is a mess. He works the minimum, abuses substances to survive the day and drinks his nights away. A once-promising career is in freefall. Investigating the death of an ex-serviceman in police custody reveals the disappearance of a young family. No-one noticed. No-one seems to care.