Detective Chief Inspector Justin Mortmain is bored, waiting for injuries, sustained in the line of duty, to heal. Frustrated, he goes for a run hoping to prove his ability to return to work. Near the halfway point of his route, he discovers the body of a young woman, Having found her, Justin feels duty bound to discover her killer. He requests permission to investigate her death and this is the focus of his first case leading a Major Crime Unit team. Haunted by the corruption of their former senior investigating officer, then being placed under the authority of an officer they do not respect or like has left the team disillusioned and demotivated. A difficult situation Justin must resolve. Can he draw the team back into the successful unit it was? After the betrayal that injured him, is Justin prepared to make the attempt? The murder investigation acts as a catalyst for him and the team, but there is one deep, dark secret about Justin's past which could blow the whole thing apart ...