The course of Frank Mackey's life was set by one defining moment when he was 19. The moment his girlfriend, Rosie Daly, failed to turn up for their rendezvous in Faithful Place, failed to run away with him to London as they had planned. Frank never heard from her again. Twenty years on, Frank is still in Dublin, working as an undercover cop. He's cut all ties with his dysfunctional family. Until his sister calls to say that Rosie's suitcase has been found....

In Broken Harbour, a ghost estate outside Dublin - half-built, half-inhabited, half-abandoned - two children and their father are dead. The mother is on her way to intensive care. Scorcher Kennedy is given the case because he is the Murder squad's star detective. At first he and his rookie partner, Richie, think this is a simple one: Pat Spain was a casualty of the recession, so he killed his children, tried to kill his wife Jenny, and finished off with himself.

Antoinette Conway, the tough, abrasive detective from The Secret Place, is still on the Murder Squad, but only just. She's partnered up with Stephen Moran now, and that's going well - but the rest of her working life isn't. Antoinette doesn't play well with others, and there's a vicious running campaign in the squad to get rid of her.

The photo shows a boy who was murdered a year ago.The caption says, "I know who killed him". Detective Stephen Moran hasn't seen Holly Mackey since she was a nine-year-old witness to the events of Faithful Place. Now she's 16 and she's shown up outside his squad room, with a photograph and a story. Even in her exclusive boarding school, in the graceful golden world that Stephen has always longed for, bad things happen and people have secrets.

Clare Cassidy is no stranger to murder. As a literature teacher specialising in the Gothic writer R. M. Holland, she teaches a short course on it every year. Then Clare's life and work collide tragically when one of her colleagues is found dead, a line from an R. M. Holland story by her body. The investigating police detective is convinced the writer's works somehow hold the key to the case.s....  

Still traumatised by her brush with a psychopath, Detective Cassie Maddox transfers out of the murder squad and starts a relationship with fellow detective Sam O'Neill. When he calls her to the scene of his new case, she is shocked to find that the murdered girl is her double. What's more, her ID shows she is Lexie Madison - the identity Cassie used years ago as an undercover detective.

When he was 12 years old, Adam Ryan went playing in the woods one day with his two best friends. He never saw them again. Their bodies were never found, and Adam himself was discovered with his back pressed against an oak tree and his shoes filled with blood. He had no memory of what had happened. Twenty years on, Rob Ryan - the child who came back - is a detective in the Dublin police force. He's changed his name. No one knows about his past.

To her adoring fans, Emmy Jackson, aka @the_mamabare, is the honest “Instamum” who always tells it like it is. To her skeptical husband, a washed-up novelist who knows just how creative Emmy can be with the truth, she is a breadwinning powerhouse chillingly brilliant at monetizing the intimate details of their family life.To one of Emmy’s dangerously obsessive followers, she’s the woman that has everything—but deserves none of it.  

During the languid days of the Christmas break, a group of 30-something friends from Oxford meets to welcome in the New Year together, a tradition they began as students 10 years ago. For this vacation, they’ve chosen an idyllic and isolated estate in the Scottish Highlands - the perfect place to get away and unwind by themselves. They arrive on December 30, just before a historic blizzard seals the lodge off from the outside world. Two days later, on New Year’s Day, one of them is dead.

When she's not digging up bones or other ancient objects, Ruth Galloway lectures at the University of North Norfolk. She lives happily alone in a remote place called Saltmarsh overlooking the North Sea and, for company; she has her cats Flint and Sparky, and Radio 4. When a child's bones are found in the marshes near an ancient site that Ruth worked on ten years earlier, Ruth is asked to date them.