Maeve Kerrigan is an ambitious detective constable, keen to make her mark on the murder task force. Her male colleagues believe Maeve’s empathy makes her weak, but the more she learns about the latest victim, Rebecca Haworth, from her grieving friends and family, the more determined Maeve becomes to bring her murderer to justice. But how do you catch a killer no one has seen? And when so much of the evidence they leave behind has gone up in smoke?

It’s an early autumn day like any other as Miles Avery drives his wife, Jacqueline, to the station. There’s a smattering of rain in the air, the traffic is in its usual snarl, and the radio’s churning out the latest news. Nothing remarkable crops up in conversation, nor do either of them appear anything other than their normal selves. At the station Miles draws up just past the taxi rank. Jacqueline gets out, takes an overnight bag from the back seat, then turns towards the platforms. This is the last anyone sees of her.

After a scandal forces DI Kelly Porter out of the Met, she returns home to the Lake District. Crimes in the Cumbrian constabulary tend to be minor, but Kelly begins work on a cold case that shocked the local community - the abduction and brutal murder of a 10-year-old girl. 

Megan has to climb round and step across the body to get a proper view. What's left is like a chalk white mask in the rough shape of a face. The innocence is still there, and a hint of the cheekiness. But perhaps she is imagining that. Detective Megan Thomas moved to Devon for a fresh start, after years spent undercover. She's staying with her sister and swimming in the sea daily, battling the tides and letting the waves wash her past away. But she can't outrun everything.

Detective Megan Thomas hoped that moving to Devon would mean a quiet life. Her years undercover in London left her broken and alone, unsure if she would ever recover. Slowly, she’s learning to work with a team and trust other people. But when her sister, Debbie, finds the body of local businessman Greg Porter, that peace is shattered. Porter’s wife and children don’t seem entirely grief-stricken, and his business dealings are not all they appear to be. So why are the police so determined to focus on Debbie? 

When Ella Watson, a woman of wealth and status, is brutally stabbed to death in broad daylight, it sends a shockwave through the Lake District community. Later that day, Keira Bradley meets the same fate. But whereas Ella’s murder is a tragedy, Keira’s death on the notorious Beacon Estate is just another statistic in a dangerous place.

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.

Despite her fascination with Jack the Ripper, Detective Constable Lacey Flint has never worked a big case or seen a dead body up close. Until now…As she leaves a south London estate one night, she is horrified to find a woman has been viciously stabbed, right next to Lacey’s car. Thrown headlong into her first murder hunt, Lacey’s quiet life changes overnight. Then Lacey receives a familiar hand-delivered letter, written in red blood, and it is clear the police have a Ripper copycat on their hands.

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?

Meet Zoe Finch, West Midlands Police's newest Detective Inspector. She's outspoken, ambitious, and damaged. And she's working a case that could make her career, or cost her everything...Fresh from the success of the Canary investigation into depravity and corruption at the highest levels, she's attracted attention. Not least from Assistant Chief Constable Bryn Jackson. But when Jackson is brutally murdered on the night of his retirement party, Zoe is dragged into a case that's deeply personal.

On a Dublin city street, packed with afternoon Christmas shoppers, a young woman appears, naked, traumatised and bearing burn marks. Tom Reynolds, now chief superintendent, is no longer head of the murder squad. But when it transpires the woman escaped from a house fire started deliberately and that there are more victims, including a baby, Tom is sucked in. What begins as a straightforward case of arson, soon becomes something much more sinister. The people in that house never wanted to be there in the first place. Now more of them are missing.

In this prequel to the international best seller The Ruin, set 10 years prior, bright-eyed Carrie Ryan is at the very start of her career. When she has a hunch about an ongoing murder investigation, she knows it could be her only chance to prove herself and truly break into the “boys' club” of Dublin’s police force.  

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.

Don't let him under your skin. He'll destroy you. Don't fight him. He'll win. Run. Never let him find you. I thought I was safe here, but I'm not. I've stayed too long. Now Genevieve is dead and the police are on their way. It's time for me to go. I must stick to the plan - the one I made the day I arrived in this city. My bag is packed. It always is. I will destroy every shred of evidence of my existence. The police must never find me. If they do, so will he. I made a mistake and someone had to die. But I'm the one who has truly lost her life.

Not everyone who's missing is lost. When two teenage girls go missing along the Irish border, Paula Maguire has to return to the hometown she left years before. Swirling with rumour and secrets, the town is gripped by fear of a serial killer. But the truth could be even darker. Not everyone who's lost wants to be found. Surrounded by people and places she tried to forget, Paula digs into the cases as the truth twists further away. What's the link with two other disappearances from 1985? And why does everything lead back to the town's dark past - including the reasons her own mother went missing years before?