A wrecking ball crashes through the roof of a terraced cottage in Bath and exposes a skeleton in 18th-century clothes. Can these possibly be the remains of Beau Nash, the so-called King of Bath, whose body is said to have ended up in a pauper's grave? Peter Diamond, the city's most experienced detective, is ordered to investigate, but grappling with historical events causes ructions in his team until everyone is diverted by a modern killing during a fireworks display on the Royal Crescent lawn.

London, 1879. Crowds have gathered at Islington's chilly Agricultural Hall to place their bets on who will become the next world champion in a six-day, 500-mile speed-walking race, the wobble. When one of the highly favored contenders dies under suspicious circumstances, Sergeant Cribb also has a race on his hands - to pursue a ruthless murderer.    

Detective Sergeant Chris Waters got the call at 05.29 that July morning. This is it, said DCI Reeve, you'll be first there, it's all yours, you're the crime scene manager. Suddenly, after months of waiting and wondering, Waters finds himself in at the deep end, and alone at the scene of a puzzling murder. As the investigation proceeds, the detectives at Kings Lake Central find themselves visiting familiar places and talking to some familiar faces, while old enmities reappear in the incident room. Before this is over, Chris Waters will need to make a career-changing decision.

Detective Chief Inspector Harry Grimm is forced to take leave from Bristol’s Major Investigations Team when his boss, tired of Harry chasing the ghost of his murderous father, sends him north on secondment. Used to city life and high stress, Harry fears his life will now be spent handing out speeding tickets, finding lost sheep, and directing tourists. But when a local teenager runs away, Harry finds himself pulled into an investigation much worse than anyone could have ever expected. 

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.

Sarah thinks of herself as a normal single mum. It's what she wants others to think of her. But the truth is, she needs something new, something thrilling. Meanwhile, DI Tom Thorne is investigating a woman's suicide, convinced she was driven to do it by a man who preys on vulnerable women. A man who is about to change Sarah's life. 

Detective Chief Inspector Ryan retreats to Holy Island seeking sanctuary when he is forced to take sabbatical leave from his duties as a homicide detective. A few days before Christmas, his peace is shattered, and he is thrust back into the murky world of murder when a young woman is found dead amongst the ancient ruins of the nearby priory. When former local girl Dr. Anna Taylor arrives back on the island as a police consultant, old memories swim to the surface, making her confront her difficult past.

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.

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.

With a glittering career, spanning several decades representing the privileged and the wealthy, behind him the focus of the investigation inevitably turns toward cases and clients past and present, but was his death linked to his work or is there another, darker and far more sinister motive at play? No matter how successful, privileged or elevated in society one person can be, one universal rule applies; we all bleed the same.

In Broken Harbour, a ghost estate outside Dublin - half-built, half-inhabited, half-abandoned - two children and their father are dead. The mother is on her way to intensive care. Scorcher Kennedy is given the case because he is the Murder squad's star detective. At first he and his rookie partner, Richie, think this is a simple one: Pat Spain was a casualty of the recession, so he killed his children, tried to kill his wife Jenny, and finished off with himself.

Harry Barnett thought he had left his military career behind, so he is startled when two figures from his past turn up on his doorstep after 50 years. An old friend has organised the reunion to end all reunions: a weekend in the Scottish castle where the ex-comrades took part in a psychological experiment many years before. They haven't seen each other since. As they set off on their all-expenses-paid jaunt to Aberdeen, the old friends are in high spirits. But the cheerful atmosphere is quickly shattered by the apparent suicide of one of their party.

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.

It was 2:47 a.m. when Chief Inspector Alan Banks arrived at the barn and saw the body of Keith Rothwell for the first time. Only hours earlier two masked men had walked the mild-mannered accountant out of his farmhouse and clinically blasted him with a shotgun. Clearly this is a professional hit - but Keith was hardly the sort of person to make deadly enemies. Or was he? For the police investigation soon raises more questions than answers. And who, exactly, is Robert Clavert?

When a body is found in a locked house, Detective Sergeant Jessica Daniel is left to not only find the killer but discover how they got in and out. With little in the way of leads and a journalist who seems to know more about the case than she does, Jessica is already feeling the pressure - and that's before a second body shows up in identical circumstances to the first. How can a murderer get to victims in seemingly impossible situations and what, if anything, links the bodies?