DCI Brendan Moran, world-weary veteran of 1970s Ireland, is recuperating from a near-fatal car crash when a murder is reported at Charnford Abbey. The abbot and his monks are strangely uncooperative, but when a visitor from the Vatican arrives and an ancient relic goes missing, the truth behind Charnford's pact of silence threatens to expose not only the abbey's haunted secrets, but also the spirits of Moran's own troubled past....

April 1968. DC Cameron Kyle is struck by a bullet at a bungled stakeout. aHe survives, but it’s clear that his old self didn’t. Once courteous and cautious, he now finds himself uncharacteristically outspoken, impatient, intolerant. His surgeon warns him that, due to the inoperable location of the bullet fragment, Kyle could die anytime; his psychologist’s prognosis isn’t much better–the words she chooses to describe his personality changes include borderline and psychotic

First they tried to kill him. Then they took his daughter . . . Anthropologist Simon Dracup knows that his only hope of finding her alive lies within the pages of his grandfather's diary, the record of a near century old expedition to Mount Ararat, legendary resting place of the great Ark of Noah. When the CIA pays him a visit Dracup learns that something was found on the Ark. Something priceless. Now its owners have taken it back, but they want revenge and Dracup is their prime target . . .

D.I. Duncan McAdam is dispatched home to the Misty Isle. A body has been found buried in a remote location on the Waternish peninsula. Well-preserved in the peat, Isla Matheson—missing for the better part of two decades—is revealed to a shocked island community. A teenage runaway is dead...and no one is talking.

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.

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?

DS Rakesh Siyal is an idealist. Frustrated as an Edinburgh human rights lawyer, he joins the police, determined to solve the problems he sees with the criminal justice system from the inside, rather than out. His first day as a cop sees him sent down to Galashiels in the Scottish Borders, where he’s given a simple task – return a suspect to Glasgow to face justice.

Detective Inspector Jack Dawes and his bride, Corrie, join eight other holidaymakers bound for a tiny Greek island, ready for a bit of sun, sea and sand. Mayhem ensues when a storm destroys the island’s primitive communications, cutting it off from civilisation. It’s a perfect opportunity for murder. First one victim is poisoned, followed swiftly by another. Then a woman is found badly beaten in a quiet cove and a body is found in a grotto to St. Sophia, the island’s patron saint. The island’s visitors are being picked off one by one.

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. 

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.