Gerald Brown is a handsome and brilliant young engineer - wrongfully accused of stealing diamonds from his South African firm. Why has he been framed? Elizabeth Burleigh is a beautiful and talented West End actress - compelled to deny herself what marriage could bring her. What is the secret that impairs her love? Gerald and Elizabeth are half-brother and sister. They are reunited in London and together they face the mysteries that have made them both so unhappy. In discovering the truth about their pasts, each finds the happiness for which neither had dared to hope.