A killer is on the loose, attacking people in places they feel most safe: their workplaces, their homes. It’s up to DS Grace Allendale to stop the murders and prove herself to her new team. All clues lead to local crime family the Steeles, but that’s where things get complicated. Because the Steeles aren’t just any family, they’re Grace’s family. Two brothers and two sisters, connected by the violent father only Grace and her mother escaped. To catch the killer, Grace will have to choose between her team and her blood. But whom do you trust when both sides are out to get you?

When 16-year-old Erin Ellis is attacked, she dies in the arms of her best friend, Molly, just metres from her home. Molly is the surviving girl but says she easily could have been the victim. It was a random mugging gone wrong. With inconclusive evidence, DS Grace Allendale must dig deep within the tight-knit Stoke community for leads. And she soon finds that someone had a motive to kill Erin. As the investigation unfolds, Grace is reminded of a horrifying case she worked on earlier in her career.

Nine out of ten murders are committed by someone the victim knows. So when Steph Ryder is found dead, DS Allie Shenton begins her investigation close to home, starting with Steph’s family and friends. Soon the lies, backtracking and secrets multiply as each of the suspects tries to cover up their actions on that fateful night. Before long, Allie homes in on Steph’s ambitious and powerful husband, Terry. Convinced he’s hiding something, she interviews him again and again, each time seeing through his smooth charms.

When DI Allie Shenton is called out to a murder suicide, it quickly becomes clear that it's a double slaying, and there is a killer on the loose. The bodies are found in a property owned by local entrepreneur/drug dealer Kenny Webb. Several young women are staying there, they are refusing to talk and one of them is missing. While she waits on forensic evidence, Allie decides to do what she does best. She takes to the community to see who will talk. Right now, she's the only one who can get answers. But then a third murder rattles everyone.

When a young boy discovers the body of a woman beneath a thick sheet of ice in a South London park, Detective Erika Foster is called in to lead the murder investigation. The victim, a beautiful young socialite, appeared to have the perfect life. Yet when Erika begins to dig deeper, she starts to connect the dots between the murder and the killings of three prostitutes, all found strangled, hands bound, and dumped in water around London.