When nineteen-year-old university student Emma goes missing, Detective Inspector Gareth Gravel is called in. But what is a simple missing person case soon turns into something much darker as Gravel’s inquiries lead him to the graves of five young women - each of whom looks just like Emma. With a serial killer on the loose and his latest victim already in his control, can the police find Emma in time? Or will Emma have to save herself?

The Mailer family are oblivious to the terrible danger that enters their lives when seven-year-old Anthony is referred to the child guidance service by the family GP following the breakdown of his parents' marriage. Fifty-eight year old Dr. David Galbraith, a sadistic, predatory paedophile employed as a consultant child psychiatrist, has already murdered one child in the soundproofed cellar below the South Wales Georgian townhouse he shares with his wife and two young daughters. Anthony becomes Galbraith's latest obsession and he will stop at nothing to make his grotesque fantasies reality.

Detective Chief Inspector Beth Fellows is thrown into the biggest case of her career: the brutal murder of Rose Danes. She quickly realizes Rose’s murder is linked to a cold case she investigated two years previously. The victim, 14-year-old Celine Wilson, survived but now languishes in a coma. Both girls were branded with the image of a raven. The only lead is a vague description and a first name, Simon.

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. 

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.

Still grieving from the tragic death of her colleague, DCI Emma Gardner continues to blame herself and is struggling to focus. So, when she is seconded to the wilds of Yorkshire, Emma hopes she’ll be able to get her mind back on the job, doing what she does best - putting killers behind bars. But when she is immediately thrown into another violent murder, Emma has no time to rest. Desperate to get answers and find the killer, Emma needs all the help she can. But her new partner, DI Paul Riddick, has demons and issues of his own.

Returning home from a police conference, DCI Boyd catches the last train back to Hastings from Brighton, unaware that he's about to play a central role in what will become a sensational news story.

A killer stalks the streets of London, murdering the richest people in the capital. Is this the work of a serial killer, or just someone angry with the super rich? Or is there another reason why billionaires are being killed every three days? Detective Inspector Simon Wise, reeling from the death of his partner and harbouring more than a few secrets of his own, is assigned to the case. But the killer leaves no clues as to their identity, only bodies in their wake, and each new death sends Wise's team in startling new directions.

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.

When Megan discovers that her young daughter is missing, she thinks that her ex-husband is to blame. But was it someone else entirely? Someone out for revenge? Someone with a grudge? As DI Laura Kesey begins her investigation, she discovers that the case is infinitely more wicked than she could ever have imagined. The clock is ticking. But will Kesey find Lottie before it’s too late? It’s every parent’s worst nightmare. The greater the evil, the deadlier the game.

One morning Gwen Thomas takes a short walk with her Siberian husky in the outskirts of the Welsh town she calls home. She is drawn to a desolate area where, some 20 years ago as a teenager, she was brutally attacked and her friend killed. Disorientated by a sudden rush of memories, she has a fall. Later, recovering in hospital, she begins to recollect the events that led up to her friend’s death.

Starting a new life in Snowdonia was always DI Ruth Hunter's dream. Until a twisted killer turned it into her worst nightmare. Detective Inspector Ruth Hunter lives with the pain of her partner’s mysterious and unsolved disappearance. About to hit 50, the veteran police officer trades in the crime-ridden streets of London for a more peaceful life in rural North Wales. But Ruth has barely settled into her new position in North Wales Police, when the body of a brutally murdered woman is discovered...with strange symbols carved into her skin.

Detective Norman is out of retirement and back on the beat in a rainy Welsh seaside town. Llangwelli might be short on sunshine, but it's certainly not short on murders . . . Norman is a bit old-fashioned, but he's also willing to learn from his band of misfit recruits. He's asked to mentor a team of misfits in a sleepy Welsh seaside town. But training has barely begun when a woman's body washes up on the beach at Llangwelli.

When a body is found on a lonely cliff top path, the angelic face of a murdered teenager lies facing the rising sun. Strangled by the hands of an unknown killer, it falls to DI Tom Janssen and his fledgling team to find out how she came to be there. Destined for a career in medicine, one to rival that of her parents, Holly Bettany’s future was as bright as it had been privileged. Seemingly, all that could threaten this promising teenager’s life was Holly herself.

Five years ago, DCI John Lomond led the search for notorious Glasgow child-killer ‘The Sandman', until personal tragedy forced him off the case. In Lomond's absence, the killer was never found. Now, with nothing but work left in his life, Lomond remains obsessed with the case–despite the nightmares it brings. When a child is abducted in similar Sandman fashion from an affluent Glasgow suburb, Lomond is brought in to find them before it's too late.