Detective Rob Miller is at home with his crying newborn son when he gets the news. Retired Chief Superintendent Sam Lawrence, Rob’s friend and mentor, has been shot dead. Rob is devastated. An hour ago Lawrence had called to ask him to meet, but Rob couldn’t go because he was on daddy duty. Now he will hunt down the killer—but his boss thinks he’s too emotionally involved. This time it’s personal, but it’s not the only murder Rob’s got on his plate. His baby won’t sleep. His partner needs him. Can he be there for them and bring a killer to justice?

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.

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. 

A sinking boat is spotted off the South Coast. Waiting onboard is a grisly discovery. DCI Boyd, recently relocated from London to Hastings, is now with the East Sussex CID, and his first case is that of a local businessman and his new young wife, missing in the English Channel. All that remains of them is a grim scene aboard their half-submerged yacht and a digital trail of clues that could put Boyd and his daughter, Emma, in danger. 

When the chief suspect in the notorious "peekaboo cop killer" case blew himself up, almost taking lead investigator DCI  Duncan Bone with him, the psychologically damaged detective thought his days on the force were over. But, when another PC is abducted and murdered in the same deranged peekaboo fashion, Bone is persuaded to return to lead the new investigation.

Police officer Sebastian Clifford never planned on becoming a private investigator. But when a scandal leads to the disbandment of his London based special squad, he finds himself out of a job. That is, until his cousin calls on him to investigate her husband’s high-profile death, and prove that it wasn’t a suicide. Clifford’s reluctant to get involved, but the more he digs, the more evidence he finds. With his ability to remember everything he's ever seen, he's the perfect person to untangle the layers of deceit.

Following a devastating encounter with a serial killer, Detective Inspector Freya Bloom is left mentally scarred. After a six-month sabbatical, and with no desire to return to the bustling London streets, she accepts a position in rural Lincolnshire in search of a slower pace of life. But with London behind her, and a new life in the wild fens of Lincolnshire before her, she finds only endless drama in her new team, a tortured romance in her only ally, and crimes so deadly even the steely determination that drove her to success is tested.

When the body of a woman is found hanging from a tree in her front garden, rookie Detective Morgan Brookes is first on the scene. But Olivia Potter is past saving. And when her husband and daughters cannot be traced, Morgan knows there is more to this tragedy. And then she finds them. Lying huddled together in the dark basement, each of their faces covered with a small cotton cloth, their bodies cold to the touch. But as Morgan kneels beside the family, she realizes that one of the girls is still breathing.

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?

Ailsa Connolly was a brilliant psychologist and a respected criminologist. She was also a serial killer. Six years ago, DCI Sean Bracken caught her just before he was about to become her seventh victim. Every year on the anniversary of her incarceration, she taunts him with a phone call, giving him one message: "When I get out, I'll kill you." Now, Bracken has transferred back to Edinburgh and is thrown into the deep end on his first day back on duty. There's a killer who is emulating Ailsa, threatening to surpass her body count. 

Three years ago, DCI Laura Hart was the top hostage and crisis negotiator for the Greater Manchester Police. Then her husband was kidnapped. Despite her best efforts to reason with the criminals, he was brutally murdered. Now living on the Isle of Anglesey in Wales, Laura is slowly healing. Then she gets a call: armed drug dealers have seized a tourist boat—and her 10-year-old son Jake is on board. There’s no other negotiator available, and the police need her to step up.

Former detective sergeant Norman Norman’s retirement is boring him to tears. So when he’s asked to assist an upcoming female DI and mentor a new team of misfits in a sleepy Welsh coastal town, he jumps at the opportunity. But the training has barely begun when a woman’s corpse washes up on the sand. With no reports of missing persons, DS Norman is stumped...until the post-mortem reveals a shocking hint to the culprit being local. But with a growing list of suspects who all have alibis, the experienced cop and his fledgling team’s first case could be their last.

A family is gunned down in the snow, but one of the children survives. Three years on, that child takes revenge, and the Snow Killer is born. But then, nothing - no further crimes are committed, and the case goes cold. 50 years later, has the urge to kill been reawakened? As murder follows murder, the detective team tasked with solving the crimes struggle with the lack of leads. It’s a race against time and the weather - each time it snows, another person dies.

DI Frank Farrell and DS McLeod are tasked with investigating the brutal murder of a defence solicitor’s wife in Dumfries. It’s been over a year since they left the town after an investigation robbed them of a dear friend. But now they’re back and must find a way to move on. When the son of another defence solicitor is murdered, a strange tattoo etched on his body, the case takes them into darker, more disturbing territory.

Bristol detective DS George Cross, champion of the outsider, the voiceless and the dispossessed. DS George Cross can be rude, difficult and awkward with people. But his unfailing logic and dogged pursuit of the truth means his conviction rate is the best on the force. An outsider himself, having been diagnosed with autism spectrum disorder, DS Cross is especially drawn to cases concerning the voiceless and the dispossessed. Now, Cross is untangling the truth about a young woman who died three days ago.