When an anonymous call sends police to a house in Sheffield, a dead couple are discovered in the kitchen. When Detective Inspector Lizzie Miller is handed the investigation, she is thrilled. But when her boss is involved in a traffic collision the investigation is stripped from her and given to DCI Bennet. But Miller refuses to quit. Soon Bennet realises that Miller is interfering with his investigation and warns her off the case. However, when a link is made to a cold case, she is drawn in deeper. Then, when the police realise the victims aren't who they think they are, the mystery is blown wide open…Will Miller be able to solve the case and keep her career intact?
