Detective Inspector Ron Scott of Police Scotland is faced with a series of murders on his patch. Based at Greenock police station in Inverclyde, Scott and his team are seeking a murderer who has been given the title "The Gardener" since his victims were being killed by common gardening tools. To add to their caseload, a four-year-old girl has been kidnapped from a shopping mall.

"It was a person after all, but she was suspended in mid-air. Abi’s heart began to thump against her ribcage as the full horror of what she was seeing became apparent. Her shrill scream pierced the silence, startling birds into taking flight. ‘Help me!’ she cried. ‘Somebody please help!’" When beautiful and bright Hannah is late for their morning run, her best friend Abi thinks nothing of it. Hannah isn’t always that reliable – she’s probably just overslept.

Was it suicide… or murder? When teenager Nick Buckingham tumbles from the fifth floor of an apartment block, Detective Sergeant Solomon Gray answers the call with a sick feeling in his stomach. The victim was just a kid, sixteen years old. And the exact age the detective's son, Tom, would've been, had he not gone missing at a funfair ten years ago. Each case involving children haunts Gray with the reminder that his son may still be out there - or worse, dead.

DI Alan Williams is called to the recovery of two bodies from the sea at Trearddur Bay, during a storm. The lifeboat crew suspect they're fishermen, washed away by a wave, but they’re wrong. Alan and his detective sergeant, Kim Davies, realise the men were beaten and tied together before they entered the water. Two miles along the headland at Porth Dafarch, a third victim is found but there are no obvious links. As the number of victims increases, a major investigation team battles to unravel a deadly puzzle.

Detective Inspector Jacob Vance and his assistant, Detective Sergeant Brittany Shepherd, are called upon to prevent a series of murders across London. The Metropolitan Police Commissioner has provoked a psychopath with her inaugural speech. Soon later, the commissioner receives a letter threatening a series of nine killings, culminating in "the big one", unless the police chief retracts her speech with a public apology. To disprove her statements, the killer adds colour and poetry to the murders, all committed in the name of the mysterious Lord Robert.

When an anonymous call sends police to a house in Sheffield, a dead couple are discovered in the kitchen. When Detective Inspector Lucy Miller is handed the investigation, she is thrilled. But when her boss is involved in a traffic collision the investigation is stripped from her and given to DCI Bennet. But Miller refuses to quit. Soon Bennet realises that Miller is interfering with his investigation and warns her off the case. However, when a link is made to a cold case, she is drawn in deeper. 

Returning home is never easy. Not when there is a serial killer at work... A completely unputdownable crime thriller full of authentic detail. DI Charley Mann left Yorkshire for the Met and a fast-track career – but now she's back, she's in charge and the area's first young, female DI. Her hometown, the Yorkshire countryside, and her old friends all seem unchanged. But appearances can be deceptive. When a brutal murder is discovered, Charley is forced to question everything, and the interest of her ex doesn't make it easier. Bodies keep appearing and the pressure is on.

It was meant to be a harmless stag-night prank. A few hours later Michael Harrison has disappeared, and his friends are dead. With only three days to the wedding, Detective Superintendent Roy Grace - a man haunted by the shadow of his own missing wife - is contacted by Michael's beautiful, distraught fiancée, Ashley Harper. Grace discovers that the one man who ought to know Michael Harrison's whereabouts is saying nothing.

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.

When Professor Alan Tunbridge is discovered in his office with his throat slashed, the suspects start queuing up. The brilliant but unpleasant microbiologist had a genius for making enemies. For Warren Jones, newly appointed Detective Chief Inspector to the Middlesbury force, a high-profile murder is the ideal opportunity. He’s determined to run a thorough and professional investigation but political pressure to resolve the case quickly and tensions in the office and at home make life anything but easy.

When a priest is found crucified in a derelict North London chapel, it makes a dramatic change for DI Charlie George and his squad at Essex Road. The brutal murder could not be further from their routine of domestic violence and stabbings on the estates. And that's only the beginning.... On Christmas Eve, a police officer goes missing and his colleagues can't help but anticipate the worst. It turns out they're right to when eventually the body is found and they discover he's been stoned to death. 

On a remote Highland mountain, the body of Elaine Buxton is burning. All that will be left to identify the respected lawyer are her teeth and a fragment of clothing. In the concealed back room of a house in Edinburgh, the real Elaine Buxton screams into the darkness…. Detective Inspector Luc Callanach has barely set foot in his new office when Elaine’s missing persons case is escalated to a murder investigation. Having left behind a promising career at Interpol, he’s eager to prove himself to his new team.

It’s Christmas in Sheffield. But not everyone is enjoying the festive season. A man has been found brutally murdered in his own home. The victim is Iain Kilbride, a once-famous TV star who has faded into obscurity. All signs point to a break-in, but why has nothing been taken? For DCI Matilda Darke, this is the perfect chance to prove her newly formed Murder Investigation Team are up to the task. Matilda suspects the clue to finding the killer lies in Iain’s past, but she’s about to discover how dark that past really is....

Jack Warr is a young DC with the Metropolitan Police. Charming but aimless, Jack can't seem to find his place in the world - until he's drawn into an investigation that turns his life upside down. In the aftermath of a fire at a derelict cottage, a badly charred body is discovered, along with the burnt remnants of millions of stolen, untraceable bank notes - the hidden legacy of Dolly Rawlins and her gang of Widows. Jack's assignment to the case coincides with an investigation into his own past.

When a woman's body is discovered in a cathedral and hours later a young man is found hanging from a tree outside his home, Detective Lottie Parker is called in to lead the investigation. Both bodies have the same distinctive tattoo clumsily inscribed on their legs. It's clear the pair are connected, but how? The trail leads Lottie to St Angela's, a former children's home, with a dark connection to her own family history. Suddenly the case just got personal.