When Marcus falls ill, Leo is left largely to his own devices and becomes a secret "postman" for Marian and nearby tenant farmer Ted Burgess, with whom she is having a clandestine relationship. Leo is happy to help Marian because he has a crush on her and likes Ted. Besides, Leo is initially ignorant of the significance or content of the messages that he is asked to carry between them and the well-meaning, innocent boy is easily manipulated by the lovers. Although Marian and Ted are fully aware of the social taboo that must make their relationship a matter of the utmost secrecy, Leo is too naïve to understand why they can never marry. The situation is further complicated by the fact that Marian is about to become engaged to Hugh, Viscount Trimingham, the descendant of the area's nobility who formerly lived in Brandham Hall.