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.

Haunted by his inability to track down and save his missing wife, DCI Robert Kett leaves the Metropolitan Police behind and moves to Norwich with his three young children, hoping to heal their broken family. But his newfound peace doesn’t last. Two newspaper delivery girls have gone missing in the city, and the clues point to a serial kidnapper. Kett is dragged into the centre of one of the darkest cases of his career - a case that pits him head-to-head against a horrifying evil.

On a desolate beach in far northern Scotland, the winter storms have been washing up all manner of things since time began. But buried in the centre of one smaller iceberg is a shard of ancient Viking pottery telling a partial tale of a hidden mysterious island beyond the ice and mist, that was home to a great treasure and even greater horrors. Thawing in the same block of ice was a rotting flap of skin that refused to be identified but had similar skin patterns to a creature not seen for 100 million years.

Caesar, an undercover operative, enters Carmichael with the briefest of orders from his boss and a countdown on his phone. What will happen when the clock strikes zero? Deputy Amelia Miller is dispatched from a nearby city, and a series of events keeps her around much longer than she'd expected. In the middle of the night, something shifts, and the whole town disappears off the face of the Earth. Who caused the shift, and what lies beyond the veil of their settlement?

The first mission to Europa – Jupiter's enigmatic moon – has landed, and humanity’s darkest fears are about to awaken. For years, mankind has speculated that this frozen world harbours a hidden ocean twice the size of all Earth’s oceans combined – an ocean potentially teeming with life. Driven by this tantalising mystery, they venture forth to unlock its secrets. But what they discover in the abyssal depths is far beyond anything they could have imagined.

In the New Mexico badlands, the skeleton of a woman is found—and the case is assigned to FBI Agent Corrie Swanson. The victim walked into the desert, shedding clothes as she went, and died in agony of heatstroke and thirst. Two rare artifacts are found clutched in her bony hands—lightning stones used by the ancient Chaco people to summon the gods. Is it suicide or… sacrifice?

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.

When buried bones are unearthed by a storm in North Yorkshire’s picturesque coastal town of Whitby, Black is drawn into an investigation that takes him back to the late eighties and the fiery demise of a popular pub. Frank is no stranger to vulnerability. With a shattered daughter, he lives with it. With an outsider in Detective Inspector Gerry Carver, he works with it. And in Charlotte Wilson, a young, eighteen-year-old musician discarded and buried near the old whalebones of Whitby, he recognizes it.

When the chief suspect in the notorious Peek-a-boo cop killer case blew himself up, almost taking lead investigator DCI Duncan Bone with him, the psychologically damaged detective thought his days on the force were over. But when another PC is abducted and murdered in the same deranged Peek-a-boo fashion, Bone is persuaded to return to lead the new investigation. But as Bone and his team hunt a copycat killer, and with time running out before yet another cop is slain, Bone’s terrifying past returns to tear open old wounds and push him to very edge of the abyss.

When Victoria Davies was pushed off her stately home's roof in 2001, all evidence pointed to her husband Michael. But now, 20 years later a letter has appeared, written by Victoria before her death; a letter that was never received, and a letter that brings new suspects into the fray; Labor MPs Shaun Donnal, Andrew MacIntyre, and Charles Baker.

A dead man on the beach. A detective with everything to prove. And a secret that won't stay buried. When a man’s body washes up on the North Yorkshire coast with a gunshot wound to the chest, DCI Tom Raven is handed the case. The only clue to the victim’s identity? A ring engraved with two names. Raven hasn’t set foot in Scarborough for over thirty years. Now he’s back – leading a murder investigation and facing ghosts from his past.

Terrified he may be going mad, he must keep the disturbing skill secret. But when it proves helpful in tracking his would-be killer, he has no choice but to embrace the newfound power. The retrocognition leads him to the house of a man recently deceased, where he encounters the clever and intriguing Miss Matilda Wren—who may be able to help him solve the many questions raised by the attack.

Met cop DI Rob Marshall is hot on the trail of the serial killer known as the Chameleon, who has abducted, tortured and killed a series of young women in Northwest London. As they close in, the Chameleon—who switches identity to get close to his victims—shoots Marshall’s partner and escapes.

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.

It's DS Logan McRae's first day back on the job after a year off on the sick, and it couldn't get much worse. Four-year-old David Reid's body is discovered in a ditch - strangled, mutilated and a long time dead. There's a killer stalking the Granite City and the local media are baying for blood. If that wasn't enough, Logan also has to contend with a new boss, DI Insch, who doesn't suffer fools gladly and thinks everyone's a fool.