A killer who runs rings around the police. A detective who is out of control. Meet DSI Wilde. Wilde by name. Wild by nature. DSI Billie Wilde is on a mission to catch the killer responsible for a horrific showcase of murders, in order to prove that she's still at the top of her game. But when hidden skeletons come out of dark corners, she is forced to confront her past and face the truth - that she is the ultimate target, now firmly in the executioner's sights. As Billie grapples with her past, and learns she isn't who she thought she was, she uncovers devastating childhood links to each of the victims. The past refuses to stay buried and Billie soon finds herself wondering if she knows who's behind the brutal murders. But can Billie solve the case and unravel the mystery of her own past before it's too late?