DI Nikki Galena's close friend Helen Brook is involved in a serious accident where she is trapped in a collapsed cellar. After her hard-won recovery, Helen is still getting flashbacks to a man she says was down there with her and who confessed to a murder. But no trace of this man can be found. Then Helen tells Nikki that someone is watching her. But is all this in her friend's imagination and part of her post-traumatic stress?

When Matt Ballard was starting out his career, three boys were murdered in the same area, the remote and bleak Gibbet Fen. When the main suspect was killed in a hit-and-run, the killings stopped. But Matt was not satisfied that the real murderer had been caught. Over 25 years later, Matt gets a photo in an unmarked envelope. It's of the Gibbet Fen crime scene. And the picture was taken before the murder took place. More photos arrive, relating to the historic murders, as well as intimate pictures of Matt's very secret private life.

Five figures gather 'round a shallow grave. They had all taken turns to dig. An adult-sized hole would have taken longer. An innocent life had been taken, but the pact had been made. Their secrets would be buried, bound in blood. Years later a headmistress is found brutally strangled, the first in a spate of gruesome murders that shock the Black Country.

Stella North, a rising star in the police, has her life torn apart by a gunman's bullets. She has often faced danger, but these injuries mean she must give up the job she loves. Her grandmother Beth is her rock. And Beth is no ordinary woman. At 70, she runs marathons and has a past that Stella knows very little about. Beth calls in her friend, Michael, to help with Stella's recovery. But this man means a lot more to Beth than she reveals. And Stella's ex-husband, Edward, and old police partner, Robbie, want to help, but Stella puts up emotional barriers.

Deep in the muddy fields of the Lincolnshire Fens, a teenage girl is found wandering, delirious, claiming to have been drugged at a party. Metres away, the drowned body of another girl is found on an isolated beach. And all this on a small stretch of land where, nearly 10 years ago, the shocking disappearance of a young girl remains an open case.

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?

A family is gunned down in the snow, but one of the children survives. Three years on, that child takes revenge, and the Snow Killer is born. But then, nothing - no further crimes are committed, and the case goes cold. 50 years later, has the urge to kill been reawakened? As murder follows murder, the detective team tasked with solving the crimes struggle with the lack of leads. It’s a race against time and the weather - each time it snows, another person dies.

Meet DCI Lesley Clarke. She’s a straight-talking city copper who doesn’t suffer fools gladly…and she’s been transferred to rural Dorset. After being injured in a bomb attack, Lesley is presented with a choice - early retirement, or a period of respite in a calmer location. But things don’t stay calm for long. Before she’s even started her new job, Lesley is dragged into investigating a murder at one of England’s most iconic landmarks, the imposing Corfe Castle.

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.

When a body is discovered in a burnt-out barn in the Warwickshire countryside, DI Will Jackman is called to investigate. Nancy Faraday wakes up on the kitchen floor. The house has been broken into and her boyfriend is missing. As the case unravels, DI Jackman realises that nothing is as it appears and everyone has a secret. Can he discover the truth behind the body in the fire and track down the killer before Nancy becomes the next victim?

Film actress Jamie Riedel was barely a teenager when, while on a camping trip, she witnessed the brutal murder of her father. Fourteen years later, Jamie returns to Jackson Ridge to settle up the estate of her estranged mother. Soon after her arrival, a note appears on her door: "I saw you in the woods today." Now Jamie is questioning if the right man was sent to prison for her father's murder.

When a local journalist is found dead in an isolated spot on Roydon Common, lying beneath a hangman's noose on the anniversary of a teenager's suicide, DI Tom Janssen is asked to take on the investigation as a favor to local colleagues and must unpick the deceased man's life to discover how he came to be there. The dead man was working on something, a story he was keeping close to his chest, and even those closest to him, loved ones and colleagues, were kept in the dark. But what did he know that was so damaging as to be worth killing for? 

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. 

When Jimmy McSwain is hired to find missing heir Harris Rothschild, he finds that identities can be altered and lives can be changed - or taken with the simple pull of the trigger. Jimmy McSwain is a New York City private detective, operating out of Hell's Kitchen, the rough and tumble neighborhood he grew up in. At age 14, he watched as his NYPD father was gunned down. Now, at age 28, and gay, Jimmy has never given up pursuit of whoever killed him.

Following an argument with her British boyfriend, Chinese student Min Li is abducted whilst walking the dark streets of picturesque Stratford-upon-Avon alone. Trapped in a dark pit, Min is at the mercy of her captor. Detective Inspector Will Jackman is tasked with solving the case and in his search for answers discovers that the truth is buried deeper than he ever expected. But, as another student vanishes and Min grows ever weaker, time is running out.