When a young woman goes missing without a trace, the police write it off as another missing persons case. But her mother is not convinced... After the fallout from a corruption scandal forces the disbanding of her old unit, Elise Wu is transferred across the country to Corviston. She is paired with the grumpy, withdrawn Simon Brown, who she had worked with previously. Simon quickly becomes convinced that the mother is right in her instinct. A trail of clues leads to an unlikely path...