A woman is found in a local cemetery, crushed to death under a gravestone. A production company is there, filming the remake of a classic sci-fi TV show on the grounds, making the investigation more difficult for DCI Harry McNeil. It's his first day in charge of the cold case unit in Edinburgh. After spending four years in Professional Standards, he has little choice but to take the promotion.

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.

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?

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.

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 landslip on Pembrokeshire’s stunning coastal path reveals the harrowing remains of two bodies, ex-DCI Evan Warlow’s quiet retirement is shattered.

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.

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.

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.

Mark Campbell is in trouble. His latest book is five years late and his recent divorce has cleaned him out. Worse, his debts with Vic Hebden aren’t the kind you consolidate into one easy payment. And he’s already missed three. But Mark has a plan—finish his novel, then pay Hebden off with the advance. His daughter, Kay, is spending her summer holiday in the far north of Scotland. The hotel calls—Kay has run off, leaving a big bill, her phone, and a copy of Mark’s last book, Break the Chain. There's only one person to turn to—his ex, Olivia. Kay’s stepmother.

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.

When a 15-year-old girl fails to make it home after school, DI Heather Filson believes she’s dealing with just another teenage runaway. The girl’s grandfather, a notorious Glasgow gangster, disagrees. Convinced one of his underworld enemies has grabbed her, he’s prepared to bathe the city in blood in order to bring his princess home.

A sinking boat is spotted off the South Coast. Waiting onboard is a grisly discovery. DCI Boyd, recently relocated from London to Hastings, is now with the East Sussex CID, and his first case is that of a local businessman and his new young wife, missing in the English Channel. All that remains of them is a grim scene aboard their half-submerged yacht and a digital trail of clues that could put Boyd and his daughter, Emma, in danger.

Criminologist Martin Knight lives a gilded life and is a thorn in the side of the police. But then his wife, Liz, goes missing. There is no good explanation and no sign of Martin.... To make things worse, Liz is the ex-girlfriend of DCI Craig Gillard who is drawn into the investigation. Is it just a missing person or something worse? And what relevance do the events around the shocking Girl F case, so taken up by Knight, have to do with the present? The truth is darker than you could ever have imagined.

Former soldier. Ex-copper. Current man on the edge. Shunned by his old colleagues, and dividing his time between a dead-end job and the bottom of a whisky bottle, former Police Scotland detective superintendent Bob Hoon’s life is a mess. Then an old face from Hoon’s Special Forces days turns up asking for help: His teenage daughter has been missing for months, the police have drawn a blank, and he needs the kind of help that only Hoon can provide. And besides, Hoon owes him one.