Meanwhile, Sarah has found John Rex in London. He has led a life of debauchery, much to the disapproval of Lady Ellinor. Sarah threatens to denounce John if he does not introduce her as his wife. Ever since Rex wanted to sell the family house, Lady Ellinor's suspicions have reached the point where she attempts to test her alleged son. When she forbids him to sell the house, Rex says that it only is his right to do so. Lady Ellinor tells him that he has no rights to anything since Richard Devine was a bastard, the son of Lord Bellasis. Rex suddenly understands their strange resemblance: he is also a son of Lord Bellasis; his mother was a servant in his house. Rex confesses to the murder of Lord Bellasis, who laughed at him when told this story. Lady Ellinor promises Sarah to allow them to leave the country in exchange for information about her son. Sarah manages to get them both aboard a vessel bound for Sydney, but Rex dies of a stroke during the voyage.