A killer is on the loose. The victims: children whose mothers can't protect them. The past is coming back to haunt the people of London: a murderer is targeting the children of victims of Raymond Garvey, an infamous serial killer from London's past.

Every Monday evening six people gather in a smart North London house to talk about shame. A respected doctor, a well-heeled housewife, a young male prostitute...they could not be more different. All they have in common is a history of addiction. But when one of the group is murdered, it quickly becomes apparent that someone else in that circle is responsible. The investigation is hampered by the strict confidentiality that binds these individuals and their therapist together, which makes things difficult for Detective Inspector Nicola Tanner.

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.

Three British couples meet around the pool on their Florida holiday and become fast friends. But on Easter Sunday, the last day of their vacation, tragedy strikes: the 14-year-old daughter of an American vacationer goes missing, and her body is later found floating in the mangroves. When the shocked couples return home to the UK, they remain in contact, and over the course of three increasingly fraught dinner parties they come to know one another better. But they don't always like what they find.

Detective Sergeant Chris Waters got the call at 05.29 that July morning. This is it, said DCI Reeve, you'll be first there, it's all yours, you're the crime scene manager. Suddenly, after months of waiting and wondering, Waters finds himself in at the deep end, and alone at the scene of a puzzling murder. As the investigation proceeds, the detectives at Kings Lake Central find themselves visiting familiar places and talking to some familiar faces, while old enmities reappear in the incident room. Before this is over, Chris Waters will need to make a career-changing decision.

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.

The story opens with the apparently accidental drowning of a sixth form student in the Norfolk countryside. As a matter of routine, or so it seems, the case passes across the desk of Detective Sergeant Smith, recently returned to work after an internal investigation into another case that has led to tensions between officers at Kings Lake police headquarters. As an ex-DCI, Smith could have retired by now, and it is clear that some of his superiors wish that he would do so.

Bristol detective DS George Cross, champion of the outsider, the voiceless and the dispossessed. DS George Cross can be rude, difficult and awkward with people. But his unfailing logic and dogged pursuit of the truth means his conviction rate is the best on the force. An outsider himself, having been diagnosed with autism spectrum disorder, DS Cross is especially drawn to cases concerning the voiceless and the dispossessed. Now, Cross is untangling the truth about a young woman who died three days ago. 

A skeletal body is unearthed in a wooded area of Peterborough, Cambridgeshire. DI James Bliss, together with DC Penny Chandler, investigates the case and discovers that the young female victim had been relocated from her original burial site. A witness is convinced that a young female was struck by a vehicle back in the summer of 1990 and that police attended the scene. However, no record exists of either the accident or the reported victim. As the case develops, two retired police officers are murdered. 

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. 

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?

DI Nikki Galena: A police detective with nothing left to lose, she's seen a girl die in her arms, and her daughter will never leave the hospital again. She's gotten tough on the criminals she believes did this to her. Too tough. And now she's been given one final warning: make it work with her new sergeant, DS Joseph Easter, or she's out.

As dusk approaches a small Dublin suburb in the summer of 1984, mothers begin to call their children home. But on this warm evening, three children do not return from the dark and silent woods. When the police arrive, they find only one of the children gripping a tree trunk in terror, wearing blood-filled sneakers, and unable to recall a single detail of the previous hours. Twenty years later, the found boy, Rob Ryan, is a detective on the Dublin Murder Squad and keeps his past a secret.

Slough House is a dumping ground for British intelligence agents who've screwed up cases in any number of ways - by leaving a secret file on a train or blowing a surveillance. River Cartwright, one such "slow horse", is bitter about his failure and about his tedious assignment transcribing cell phone conversations. When a young man is abducted and his kidnappers threaten to broadcast his beheading live on the Internet, River sees an opportunity to redeem himself.

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.