The Pride of the Prydes

The opening to the public of Pryde Castle, an estate mired in death duties, ends when guide Audrey Diggle (Marcia Warren), is struck and killed by an arrow. She was an expert on the Pryde's family history, including an old curse that the first born would be mad. Father Brown is convinced that the motive lies in the Pryde family's past, when a page from the parish birth records goes missing. All the family members are known to use a longbow.