Detective Inspector Avison Fluke is a man on the edge. He has committed a crime to get back to work, concealed a debilitating illness and is about to be made homeless. Just as he thinks things can't get any worse, the body of a young woman is found buried on a Cumbrian building site. Shot once in the back of the head, it is a cold, calculated execution. When the postmortem reveals she has gone to significant expense in disguising her appearance, Fluke knows this is no ordinary murder.

When a young man is found frozen to death on a Highland street in mid-December, DCI Jack Logan initially puts it down to a Christmas night out gone tragically wrong. But, when a postmortem reveals something more sinister, Jack discovers he is dealing with a cold, calculating killer with a long line of victims, a talent for torture, and a perverse sense of justice. 

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?

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.

A skeletal body is unearthed in a wooded area of Peterborough, Cambridgeshire. DI James Bliss, together with DC Penny Chandler, investigates the case and discovers that the young female victim had been relocated from her original burial site. A witness is convinced that a young female was struck by a vehicle back in the summer of 1990 and that police attended the scene. However, no record exists of either the accident or the reported victim. As the case develops, two retired police officers are murdered. 

DCI Michael Lambert thought he’d closed his last case.... Yet when he’s passed a file detailing a particularly gruesome murder, Michael knows that this is no ordinary killer at work. The removal of the victim’s eyes and the Latin inscription carved into the chest is the chilling calling card of the ‘soul jacker’: a cold-blooded murderer who struck close to Michael once before, 25 years ago. Now the long-buried case is being reopened, and Michael is determined to use his inside knowledge to finally bring the killer to justice. 

A woman screams in pain. Twenty-seven times, until she dies. The sound file was sent to DCI Mark Lapslie from an anonymous email address. Why is she screaming? Why would someone record that horrifying noise? And why send it to him? He soon learns that the file was sent from the hospital where he is being treated for synaesthesia - a neurological condition that cross-wires his senses so he tastes sound - and where his new girlfriend works. 

Holly Wakefield works for the NHS as a criminal psychologist specialising in serial killers. She has particular reason to be good at her job - but she keeps that to herself. When DI Bishop from the Met Police approaches Holly to investigate a recent killing, Holly is horrified by the dismembered bodies and the way they have been theatrically positioned. More shocking still is when the pathologist reveals this is not the first time she has seen these mutilations. It means a serial killer is out there, and they're going to kill again - soon. 

After the dramatic theft of a priceless artefact from Durham Cathedral, the rest of the world believes that DCI Ryan and his team were able to recover and return St Cuthbert's cross to its rightful home. But Ryan knows the cross he recovered was a fake - far from being over, their problems are only just beginning. Just as Ryan and his team begin to unravel the truth behind the spate of mysterious thefts, something even more priceless is stolen - something that can never be replaced. 

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. 

As a massive storm batters the Scottish coast, Gordon Smith’s home is falling into the North Sea. But the crumbling headland has revealed what he’s got buried in his garden: human remains. With the storm still raging, it’s too dangerous to retrieve the bodies, and waves are devouring the evidence. Which means no one knows how many people Smith’s already killed and how many more he’ll kill if he can’t be stopped. The media are baying for blood, the top brass are after a scapegoat and ex-Detective Inspector Ash Henderson is done playing nice. 

On a cold winter's morning, the body of a young boy is discovered in Epping Forest. The body is pristine and peaceful, his head resting gently on a pillow, an angel pendant clenched in his small fist. It is a murder as carefully planned as it is brutal, and there's one person DI Bishop needs back on his team to help solve such a calculated crime. Holly Wakefield, clinical psychologist for the Met Police, is better than anyone Bishop knows at getting inside the brains of psychopaths.

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.

Brendan Foley has worked to balance the responsibilities of a demanding job and a troublesome family. He’s managed to keep these two worlds separate, until the discovery of a mass grave sends them into a headlong collision. When one of the dead turns out to be a familiar face, he’s taken off the case. Iona Madison keeps everything under control. She works hard as a detective sergeant and trains harder as a boxer. But when her superior, DI Foley, is removed from the case, her certainties are tested like never before. 

Blair Charlston swapped the stock market for salvation - and now he's making a killing. Once a controversial venture capitalist, Charlston reinvented himself as a personal and business development guru after surviving an attempt to take his own life when a business deal went disastrously wrong. So when he decides to host a weekend retreat on the outskirts of Stirling for more than 300 people, Connor Fraser is drafted in to cover the security for a man who is at once idolised as a saviour and hated as a ruthless asset stripper.