They call it the Bone Box. A collection of old cases, solved and unsolved, that continue to haunt forensic pathologist Birdy Waterman. None is more disturbing than the first. After two decades, Birdy still remembers the screaming. The blood on the boy's hands. The body of a girl, butchered in the woods. Birdy's testimony helped put her own cousin behind bars. It was a sacrifice for what she thought was right - but now, 20 years later, she wants to reopen the box.

In a secluded farm house in the Pacific Northwest, a family has been slaughtered - and a teenage son has disappeared. Single mother and cop Emily Kenyon spearheads a dark hunt for a killer. But Emily's teenage daughter, Jenna, is one step ahead of her. Then another family is butchered, and another. As Emily fits the puzzle pieces together, she makes a chilling discovery: The killer is coming after her and her daughter....

Detective Megan Carpenter is no stranger to evil. Escaping the horrors of her old life, she’s vowed never to let anyone hurt her or those she loves ever again. Joining the small police force in Jefferson County’s Port Townsend, Megan is determined to get every victim of a crime the justice they deserve. So when Ruth Turner walks into the Sheriff’s office claiming her sister Ida Watson has been missing for over a month, Megan’s instincts tell her that she needs to do more than just file a report.

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.

Former homicide detective Nicole Foster has hit rock bottom. Driven off the force by her treacherous partner and lover, she's flat broke and struggling with a gambling addiction. All Nicole has left is the dream of a warm bed at a homeless shelter and the haunting memories of three-year-old Kelsey Chase—whose murder case ended her career. As Nicole obsesses over the old facts, she realizes everything about that case felt off.