The Sleeping Nymph: a work of art of magnetic beauty, painted by a young partisan fighter during the last days of the Second World War. A painting carrying a shocking secret hidden in the red pigment on the canvas, made with the blood of a human heart. But whose heart? There is no body, no confession. Only that faint trace of blood. And that's what leads Commissioner Teresa Battaglia - herself hiding an unspeakable truth - to the Resia Valley, in the north-eastern part of Italy: a perfect genetic enclave protected for centuries from the outside world. 

A madman is holding Vitoria hostage, killing its citizens in brutal ways and staging the bodies. The city's only hope is a brilliant detective struggling to battle his own demons. Inspector Unai López de Ayala, known as "Kraken", is charged with investigating a series of ritualistic murders. The killings are eerily similar to ones that terrorized the citizens of Vitoria 20 years earlier. But back then, police were sure they had discovered the killer, a prestigious archaeologist who is currently in jail.

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.

Detective Inspector Macleod returns to his island home 20 years after the painful loss of his wife. With a disposition forged in strong religious conservatism, he must bond with his new partner, the free spirited and upcoming female star of the force, to seek the killer of a young woman and shine a light on the evil beneath the surface. To do so, he must once again stand in the place where he lost everything. Only at the water’s edge will everything be made new. 

A bomb explodes in the centre of Florence, hitting the car of Chief Superintendent Michele Ferrara of the elite Squadra Mobile. The attack rocks the ancient city to its foundations. Ferrara was clearly the target - and he did, after all, just controversially imprison notorious Mafia boss Salvatore Laprua. A week later, another bomb explodes - bringing tragedy for Ferrara and a determination to find the culprit. But that same morning, Salvatore Laprua is found dead in his prison cell.

Hirsh was a promising metropolitan officer - until he blew the whistle on a case of police corruption. Now he’s been exiled to a one-cop station in South Australia’s wheatbelt. Called a dog by his own cop brothers. So when he’s sent to investigate gunfire up isolated Bitter Wash Road he suspects his backup might be the one to put a bullet in him. He’s wrong. But the events that unfold turn out to be a lot more sinister.

When a teenage boy shoots a young woman dead in the middle of a busy Glasgow street and then commits suicide, Detective Harry McCoy is sure of one thing. It wasn't a random act of violence. McCoy uses his underworld network to lead the investigation but soon runs up against a secret society led by Glasgow's wealthiest family, the Dunlops. McCoy's boss doesn't want him to investigate. The Dunlops seem untouchable. But McCoy has other ideas....

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.

Twenty-four years ago Katharina Haugen went missing. All she left behind was her husband, Martin, and a mysterious string of numbers scribbled on a piece of paper. Every year on October 9th Chief Inspector William Wisting takes out the files to the case he was never able to solve. Stares at the code he was never able to crack. And visits the husband he was never able to help. But now Martin Haugen is missing too. 

She always went too 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.