DI Tudor Manx was hoping for a quiet life. But his hopes are dashed when there's a gruesome find - a mutilated body, crucified to the bow of a fishing boat. Is this a message or a macabre premonition? Manx's past still haunts him - the disappearance of his younger sister, Miriam: a cold case that remains unsolved. Can he work it all out before the body count rises?

When Ryan Kennedy is imprisoned after killing a police officer, he knows what he has to do. Keep his mouth shut about who he was working for, keep his head down, and rely on his youth to keep his sentence short. When he gets out, he'll be looked after. Following the death in the line of duty of a fellow detective, DI Sarah Collins has left the capital for a quieter life in the countryside. But when a missing teenager turns up on her patch, she finds herself drawn into a much bigger investigation—one that leads her right back to London, back to the Met, and back to Ryan Kennedy.

This is a fact: Ryan Summers walked into Three Rivers College and killed 13 women, then himself. But no one can say why. The question is one that cries out to be answered - by Ryan's mother, Moira; by Ishbel, the mother of Abigail, the first victim; and by DI Helen Birch, put in charge of the case on her first day at her new job. But as the tabloids and the media swarm, as the families' secrets come out, as the world searches for someone to blame...the truth seems to vanish.

It was meant to be a harmless stag-night prank. But a few hours later, the groom has disappeared and his friends are dead. With only three days to the wedding, Roy Grace is contacted by the man’s distraught fiancée to unearth what happened on that fateful night. The one man who ought to know of the groom’s whereabouts is saying nothing. But then he has a lot more to gain than anyone realizes, for one man’s disaster is another man’s fortune.

Detective Inspector Matt Lockyer has been side-lined to working cold cases, following a bad decision he made in a recent investigation in order to support a friend. Lockyer isn't too bothered though, as it gives him the chance to review some of the cases that keep him up at night and to look into his own brother's senseless killing, which still remains unsolved. On a quiet afternoon, Lockyer receives a phone call from prisoner Hedy Lambert—a woman he put inside for murder 14 years ago. She informs him that the man she was originally accused of killing has turned up alive and well.