The body of a young woman has been found on the shores of Southend. Already under scrutiny following the murder of a corrupt cop, DS Frank Pearson and DC Cat Russell of the Essex Major Investigation Team are tasked with solving the case quickly, and quietly.When the identity of the victim is revealed by an unexpected source, the list of suspects begins to grow. A young woman knows more than she's saying, but is she involved or covering for someone else? As Pearson and Russell search for answers, they uncover a link with another murder, fifty years before. Could the killer still be at large, or is the truth even more terrifying?