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.

In a busy shopping center, a little girl clutches a teddy bear, clinging to it in the absence of her mother, Katrina. Hours later, Katrina’s body is discovered in an abandoned building. For Detective Kim Stone, it looks like a quick, functional murder. But Kim’s instincts tell her there’s more to this senseless murder than meets the eye. What was the motive for killing a young mother out shopping with her child? 

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.

When a battered suitcase containing the dismembered body of a young man washes up on the shore of the river Thames, Detective Erika Foster is shocked. She's worked on some terrifying cases but never seen anything like this before. As Erika and her team set to work, she makes the link with another victim - the body of a young woman dumped in an identical suitcase two weeks ago. Erika quickly realizes she's on the trail of a serial killer who's already made their next move.

When Detective Erika Foster receives a tip-off that key evidence for a major narcotics case was stashed in a disused quarry on the outskirts of London, she orders for it to be searched. From the thick sludge the drugs are recovered, but so is the skeleton of a young child. The remains are quickly identified as seven-year-old Jessica Collins. The missing girl who made headline news 26 years ago.

On a cold icy morning, a mother wakes to find her daughter’s blood-soaked body frozen to the road. Who would carry out such a horrific killing on the victim’s doorstep? Straight off her last harrowing case, Detective Erika Foster is feeling fragile but determined to lead the investigation. As she sets to work, she finds reports of assaults in the same quiet South London suburb where the woman was killed. One chilling detail links them to the murder victim - they were all attacked by a figure in black wearing a gas mask.

One hot summer evening, 11-year-old Mikey Driscoll is on the way home from playing with friends. Two days later, his body is discovered on a bed of wildflowers by some local teenagers. The case is assigned to Detective Lottie Parker, and this time it’s personal. The victim was a close friend of her son, Sean, from the run-down Munbally estate on the other side of town. Sean tells his mother Mikey was behaving normally before he died, but Lottie can’t help but feel that her son is keeping something from her.

As funeral mourners stand in silence at Ragmullin cemetery, a deafening cry cuts through the air. Lying crumpled at the bottom of an open grave is the bloodied body of a young woman, and Detective Lottie Parker is called in to investigate. Knowing the body can’t have been there long, Lottie wonders if it could be Elizabeth Bryne, a young woman who vanished without trace just days earlier. And with a new boss who seems to have it in for her, Lottie is under pressure to solve both cases quickly.

Leah Nash would kill for a good story. After receiving a cryptic message from a drowned nun, journalist Leah Nash reopens the investigation into her own teenage sister’s death - and is quickly led down a dangerous path. When she links the two deaths to a shocking scandal, the story she uncovers could be her last byline.

When Faye Baker discovers a fragile child’s skull behind the walls of her new home, Detective Lottie Parker is called to investigate. The house has been owned for years by the family of Faye’s boyfriend Jeff, so when Jeff starts acting suspiciously, Lottie wonders what he might be hiding....Lottie doesn’t have long to dig deeper before a child’s bones are found by 11-year-old Gavin on nearby railway tracks. The bones don’t match the small skull behind the walls, but Lottie can’t ignore the coincidence. 

For 15 years, Detective Chief Inspector Arla Baker has hunted for Nicole, her lost sister.... Today, a woman lies with her throat slit open in Clapham Common Park. There are three black triangles drawn on her body. DCI Arla Baker is called in to investigate. Soon there is another body, killed in identical fashion, in the same location. Arla knows a vicious serial killer is stalking the streets. But what does the killer know about Nicole? For Clapham Common is where Nicole disappeared 15 years ago. Arla refuses to accept Nicole is dead. She will not rest till she finds her sister.

Detective Inspector Geraldine Steel returns in an exhilarating case of grisly murder in London. When a successful businessman is brutally murdered, the police suspect his glamorous wife and her young lover. Then the victim's business partner suffers the same gruesome fate and when yet another body is discovered, seemingly unrelated to the first two, the police are baffled.

The Fens are burning, and Detective Nikki Galena faces a cat-and-mouse battle with a killer arsonist. Someone is lighting fires. First they target homes and businesses, but then a body is found at one of the crime scenes. More fires are lit. And at each one a single person dies. But the victims have led spotless lives, and apparently there's no connection between them. Meanwhile, the town is facing a very peculiar threat from a group of sinister Satanists led by a charismatic businessman. Who is burning with anger, and can Nikki stop them before anyone else dies? 

In the dead of a swelteringly hot summer's night, Detective Erika Foster is called to a murder scene. The victim, a doctor, is found suffocated in bed. His wrists are bound and his eyes bulging through a clear plastic bag tied tight over his head. A few days later, another victim is found dead in exactly the same circumstances. As Erika and her team start digging deeper, they discover a calculated serial killer - stalking their victims before choosing the right moment to strike.

One dark winter’s morning, bride-to-be Cara Dunne is found hanging in her home, dressed in her wedding dress, with a lock of hair removed. Detective Lottie Parker is first on the scene. Looking at Cara’s bruised and battered body, she wonders who could have hated her enough to kill her at the happiest time of her life. The case takes a darker turn that afternoon with another shocking discovery - the broken body of a second young woman, pushed from the roof of the hospital where she worked. Fiona Heffernan was also due to be married....