As a female cop walking the mean streets of Manchester, life can be tough for PC Lucy Clayburn. But when one of the North West's toughest gangsters is your father, things can be particularly difficult. When Lucy's patch is gripped by a spate of murder-robberies, the police are quick to action. Yet when it transpires that the targets are Manchester's criminal underworld, attitudes change. Lucy is soon faced with one of the toughest cases of her life - and one which will prove once and for all whether blood really is thicker than water...