Veteran DI David Bradford heads an elite murder squad, but he's been on leave following the unexplained disappearance of his wife. In his absence, ambitious DS Vivienne Cole has been leading the investigations, and when Bradford returns to work, the two clash over their methods. Despite the tension, Bradford and Cole strive to solve complex crimes. The only case David can't crack is the most personal to him until one of their investigations uncovers evidence linked to his missing wife.