Meanwhile, Gillan McArdle’s academic career is ending because of one stupid lapse of judgement. Offered a short-term contract, he lands on the Hebridean island of Harris to investigate obscure animal bones. Quickly dismissing the unicorn skull as a thinly disguised fake, he can’t deny there’s something unusual about these bones. Baited by rumors of a majestic tusked horse roaming the uplands, Gill begins to suspect someone is manipulating him. As he gradually unravels the mystery of the skull, he grasps a disturbing conclusion: If this creature does exist, the evidence suggests it’s a killer.

On Christmas Eve, DCI Mackenzie Jones is called to a shooting at a remote farmhouse. Ralph Mallender believes his father lies dead inside. When three more bodies are discovered, it's clear a festive family gathering has turned into a gruesome tragedy. At first it seems like an open and shut case: a murder suicide committed by Ralph's volatile brother Cameron. Then new evidence makes Mack suspect the man who reported the crime is in fact the perpetrator. But Mack isn't the only one with a stake in the case.

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.

When a body is found on a lonely cliff top path, the angelic face of a murdered teenager lies facing the rising sun. Strangled by the hands of an unknown killer, it falls to DI Tom Janssen and his fledgling team to find out how she came to be there. Destined for a career in medicine, one to rival that of her parents, Holly Bettany’s future was as bright as it had been privileged. Seemingly, all that could threaten this promising teenager’s life was Holly herself.

Detective Constable Angus MacVicar has just landed his dream job – transferred out of uniform and assigned to Oldcastle’s biggest ongoing murder investigation: Operation Telegram, hunting the “Fortnight Killer”. Every two weeks another couple is targeted. One victim is left at the scene, their corpse used as a twisted message board. The second body is never seen again. This should be the perfect chance for Angus to prove himself, but instead of working on the investigation’s front line, he’s lumbered with the forensic psychologist from hell.

Sea Isle was supposed to be the fresh start Dr. Emilia McRoy dreamed of. Far from the busy emergency room across the Atlantic in Seattle, she hoped to settle down and begin this new chapter as a small-town doctor to the quirky residents who immediately welcomed her. When she stumbles across a dead body, she starts to think that she may not be as Scot free of the drama and intrigue as she initially thought.

Homicide is always an abomination, but there is something exceptionally disturbing about the victim discovered in a high, lonely place: a corpse with a mouth full of sand, abandoned at a crime scene seemingly devoid of tracks or useful clues. Though it goes against his better judgment, Navajo tribal police lieutenant Joe Leaphorn cannot help but suspect the hand of a supernatural killer.

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.

In the shadow of the Pentland Hills, a man has been callously struck down in front of his home. Tyre marks suggest it was no accidental hit-and-run. Somebody wanted him dead and as the man fights for every breath, they might still get their wish. Grappling with the demons he thought he could leave behind after months away on enforced leave, D.S. Malkie McCulloch resists pressure from his superiors to pass the case on to the road policing unit, convinced that whoever was behind the wheel will be waiting for the chance to finish the job.

When a woman plunges to her death from Edinburgh's iconic Scott Monument, crime reporter Doug McGregor is sent to chase the story behind the shock. But Doug is juggling more than headlines—he's also on the hunt for a notorious rapist, newly unmasked and lurking somewhere close to home. Teaming up with his trusted police contact, DS Susie Drummond, Doug uncovers a chilling connection: the victim was the daughter of a high-ranking Member of the Scottish Parliament.