The Night Hawks, a group of metal detectorists, are searching for buried treasure when they find a body on the beach in North Norfolk. At first Nelson thinks that the dead man might be an asylum seeker but he turns out to be a local boy, Jem Taylor, recently released from prison. Ruth is more interested in the treasure, a hoard of Bronze Age weapons. Nelson at first thinks that Taylor's death is accidental drowning, but a second death suggests murder.

She always went to far. DS Alexandra Cupidi has done it again. She should have learnt to keep her big mouth shut after the scandal that sent her packing - resentful teenager in tow - from the London Met to the lonely Kent coastline. Murder is different here, among the fens and stark beaches. She was the one who found the killers. The man drowned in the slurry pit had been herded there like an animal. He was North African, like many of the fruit pickers that work the fields. The more Cupidi discovers, the more she wants to ask - but these people are suspicious of questions. 

The two boys never fitted in. Seventeen, the worst age, nothing to do but smoke weed; at least they have each other. The day they speed off on a moped with a stolen mobile, they're ready to celebrate their luck at last. Until their victim comes looking for what's his - and ready to kill for it. On the other side of Kent's wealth divide, DS Alexandra Cupidi faces the strangest murder investigation of her career. A severed limb, hidden inside a modern sculpture in Margate's Turner Contemporary. No one takes it seriously - not even the artwork's owners.

An unidentified cadaver is found in a freezer in an unoccupied luxury house. No-one seems to know or care who it is or who placed it there. When DS Alexandra Cupidi is handed the case, she can have no idea it will lead her to a series of murderous cover-ups and buried secrets. Namely the discovery of the skeleton of public-school boy, Trevor Wood, beneath a housing development. 

London, October 1968. As Beatles fans encamp outside Abbey Road Studios up the road, the Marylebone CID is as much an old boys' club as it ever was: comfortably sexist, racially prejudiced and crawling with corruption. Detective Sergeant Cathal Breen is the pariah of the office, having just run out on a fellow officer held at knifepoint, when it's shaken up by the arrival of WPC Helen Tozer: awkward chatterbox, farmgirl, and the first woman to enter the murder unit - apart from the secretary.

When a body is discovered, bled dry on a beach, the sleepy seaside town of Weston-super-Mare wakes up to a nightmare. For Detective Inspector Louise Blackwell, recently transferred to the town she last saw as a child, it’s her first case on the job. The victim - Veronica Lloyd, an elderly volunteer at a local church - has puncture wounds to her hands. When a priest is found killed in a nearby church in a similarly grisly condition, it becomes clear that Blackwell is dealing with a righteous and bloody murderer. But the victims aren’t random.

A mutilated body is found dumped at Cowane's Hospital in the heart of historic Stirling. For DCI Malcolm Ford it's like nothing he's ever seen before, the savagery of the crime making him want to catch the murderer before he strikes again. For reporter Donna Blake it's a shot at the big time, a chance to get her career back on track and prove all the doubters wrong. But for close protection specialist Connor Fraser it's merely a grisly distraction from the day job. 

She made a profit from her youth. She's not beautiful anymore - but she will be young forever. Called away from his pregnant girlfriend, Detective Sergeant Cathal Breen knows the sight of the murdered prostitute will be with him all his life. But this is what he does: he finds killers. Helen Tozer, more than most, understands why.

On a freezing winter morning, fishermen pull a body from the sea. It is quickly discovered that the dead man was the prime suspect in a decade-old investigation, when a prominent civil servant disappeared without trace. DCI Karen Pirie was the last detective to review the file and is drawn into a sinister world of betrayal and dark secrets. But Karen is already grappling with another case, one with even more questions and fewer answers. A skeleton has been discovered in an abandoned camper van and all clues point to a killer who never faced justice - a killer who is still out there.

When Ella Watson, a woman of wealth and status, is brutally stabbed to death in broad daylight, it sends a shockwave through the Lake District community. Later that day, Keira Bradley meets the same fate. But whereas Ella’s murder is a tragedy, Keira’s death on the notorious Beacon Estate is just another statistic in a dangerous place.

When a girl’s body is found strangled, raped, and horrifically mutilated by a boat’s propeller, deep in the heart of the Norfolk Broads, newly arrived Detective Inspector John Tanner is asked to assist with the investigation. At first, all the evidence points to a man who had a multi-million-pound reason to kill her. But when an alibi is produced from an unexpected source, and another body appears at the base of a slipway, Tanner finds himself turning to local girl Detective Constable Jenny Evans for help. 

It's 1969. Five years ago, teenager Alexandra Tozer was murdered. Her sister, Helen Tozer, will never forget. Returning home after quitting the Met Police, she brings with her the recovering Detective Sergeant Cathal Breen, who slowly becomes possessed by the unsolved case. But Breen is on a trail, for the two men connected to this case met in Kenya, during the Mau Mau uprising; and the history that Britain has turned its face from is now returning to haunt it.

Marylebone, November 1968. Detective Sergeant Breen has a death threat and two burned bodies on his hands. One is an un-mourned vagrant; the other the son of a politician. One case suffers the apathy of the police; the other obstructed by a PR-conscious father. Then the potential perpetrator of his death threats is murdered. Banished from a corrupt system, Breen is finally forced to fight fire with fire.

Summer on the Peninsula. The heat’s ramping up, the usual holiday madness building. D.I. Hal Challis is already recycling his shower water and starting to dread Christmas. But this year there’s something more. Women abducted and murdered on the Old Highway. A pall of fear over the scorched paddocks. The media are demanding answers - and Challis’s sleepy beat is set to explode.

When Harry Falcon, a wealthy boatyard owner and decorated World War Two veteran, is found drowned in his bath, DI John Tanner and DC Jenny Evans start by questioning his two sons, each with a motive for wanting him dead. But when the elder son is found with his head smashed in under a toppled yacht, and the younger son has been talking to a local property developer, one who’d spent months trying to buy the yard from his father, the investigation soon leads them towards a dark and dangerous secret, one which nobody can quite believe.