The message on Sara Prior's phone contains the last words she will ever hear from her husband. Racing to find him, she discovers he has been brutally murdered.

While the police struggle to uncover evidence around this shocking crime, it becomes clear that Sara is no ordinary bereaved wife. And she is not the sort of woman to let things lie. Following a hidden clue in her husband's last desperate phone call, Sara follows the trail to the house of the last person she'd expect...

Meanwhile DS Nathan Cody finds himself drawn into the darkest and most twisted case of his career. And this time things are about to get very, very personal.

A dark, shocking and relentlessly gripping thriller will keep you up all night, until the final page has been turned.