David Umber abandons his research on the mysterious identity of the letter-writer and political polemicist--Junius when a man called Griffin, who says can help with the research does not show up to meet him. In the meantime, two-year-old Tamsin is abducted and his sister is murdered. Investigation follows and the case is closed. Ten years later the chief investigator reopens the case and demands Umber's help. He believes that the man in custody is not responsible for the Avebury case, and recently, he received a letter reproaching him for the mistakes in the investigation--a letter signed Junius.