If Esther's family is as genteel and respectable as she's always believed, where do the rumours of bigamy, fraud and murder come from? Stories of a 'black sheep' have always intrigued her, as have the origins of the Rantzen side of the family. Her search for answers takes her from the slums of Spitalfields in London to the diamond mines of South Africa. Along the way she discovers the amazing story of a fugitive from justice.