Liar of the White Worm: Chapter III
Here Diana's Grove, called Temple Grove in the film, is mentioned. While it is a hill in the book and a grove of trees in the film, it is a site of a pagan temple in both.
Here Mercy, called Mercy Farm in the film, is mentioned. While established in 286 A.D. in the film and later in time by Queen Bertha in the book, and while done away with by the Romans in the film and later in time by King Penda in the book, it is the site of a nunnery in both film and book.