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?

When a landslip on Pembrokeshire’s stunning coastal path reveals the harrowing remains of two bodies, ex-DCI Evan Warlow’s quiet retirement is shattered.

Terry Flynt is a struggling legal clerk desperately trying to get promoted when he is given the biggest opportunity of his career: to help defend a millionaire accused of murdering a woman in his hotel suite. The only problem is that the accused man, Vernon James, is not only someone he knows but someone he loathes. This case could potentially make Terry's career, but how can he defend a former friend who betrayed him?

When five-year-old Ava Sawyer goes missing from a birthday party at a local garden center, the police are bewildered by the lack of leads. That is, until two years later, when Ava’s body is found and another little girl, Audrey Briggs, goes missing. Audrey also attended that party. Leading the investigation is Detective Natalie Ward. A mother of two teenagers, this case chills her to the bone and is a disturbing reminder of the last job she worked on. One that still keeps her awake at night.

He’s the Man With No Name and the owner of No Alibis, a mystery bookshop in Belfast. But when a detective agency next door goes bust, the agency’s clients start calling into his shop asking him to solve their cases. It’s not as if there’s any danger involved. It’s an easy way to sell books to his gullible customers and Alison, the beautiful girl in the jewellery shop across the road, will surely be impressed. Except she’s not – because she can see the bigger picture.

On a remote Highland mountain, the body of Elaine Buxton is burning. All that will be left to identify the respected lawyer are her teeth and a fragment of clothing. In the concealed back room of a house in Edinburgh, the real Elaine Buxton screams into the darkness…. Detective Inspector Luc Callanach has barely set foot in his new office when Elaine’s missing persons case is escalated to a murder investigation. Having left behind a promising career at Interpol, he’s eager to prove himself to his new team.

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.

The hunt for a serial killer unearths an unsolved cold case from over 60 years ago. Young girls are being abducted and murdered in the Northeast. Out of favour detective constable Ian Bradshaw struggles to find any leads - and fears that the only thing this investigation will unravel is himself. Journalist Tom Carney is suspended by his London tabloid and returns to his home village in County Durham. Helen Norton is the reporter who replaced Tom on the local newspaper. Together they are drawn into a case that will change their lives forever.

Rookie detective Anna Travis has been assigned to her first murder case - a series of killings that has shocked even the most hardened on the force. Over the past eight years there have been six victims - all women from similar backgrounds, all killed in an identical way. Then a seventh body is found, but this one doesn't fit the pattern.

Criminologist Martin Knight lives a gilded life and is a thorn in the side of the police. But then his wife, Liz, goes missing. There is no good explanation and no sign of Martin.... To make things worse, Liz is the ex-girlfriend of DCI Craig Gillard who is drawn into the investigation. Is it just a missing person or something worse? And what relevance do the events around the shocking Girl F case, so taken up by Knight, have to do with the present? The truth is darker than you could ever have imagined.

Jack Warr is a young DC with the Metropolitan Police. Charming but aimless, Jack can't seem to find his place in the world - until he's drawn into an investigation that turns his life upside down. In the aftermath of a fire at a derelict cottage, a badly charred body is discovered, along with the burnt remnants of millions of stolen, untraceable bank notes - the hidden legacy of Dolly Rawlins and her gang of Widows. Jack's assignment to the case coincides with an investigation into his own past.

Twenty years ago, 11-year-olds Charlie Paige and Scott Ashby were murdered in the city of Bristol. A man was convicted of the brutal crime, but decades later, questions still linger. For his whole life, filmmaker Cody Swift has been haunted by the deaths of his childhood best friends. The loose ends of the police investigation consume him so much that he decides to return to Bristol in search of answers. Hoping to uncover new evidence and to encourage those who may be keeping long-buried secrets to speak up, Cody starts a podcast to record his findings.

After a scandal forces DI Kelly Porter out of the Met, she returns home to the Lake District. Crimes in the Cumbrian constabulary tend to be minor, but Kelly begins work on a cold case that shocked the local community - the abduction and brutal murder of a 10-year-old girl.

Kenny Gabriel is three years away from turning sixty, has forty-three quid in the bank and is occasionally employed to find people who would rather not be found. Broke, clientless and depressed, he knows things can't get much worse. Then he's summoned to the office of London media magnate Frank Parr, whose daughter, Harry, is missing - and there's ten grand on the table to get her back. But he and Frank have a history he'd rather not revisit.

He's a serial killer. A murderer of young women, all killed in brutal attacks. But despite Hamish Wolfe's conviction, he's always stuck to his story - he's innocent, and he's been wrongly imprisoned. And now he wants someone to investigate and, more importantly, to write his story. Maggie Rose is a notorious defense attorney and writer whose specialty is getting convictions overturned. At first Maggie is reluctant to even acknowledge Hamish's requests to meet, ignoring his letters. But this is a very charismatic and persuasive man, good looking and intelligent.