Adwell House, which was the filming location for Langley Hall in this episode, was also used in the episodes The Great and the Good (2009) and A Talent for Life (2003).
Caroline Munro, famous British Scream Queen of the 1960s through the 1980s, has a cameo as Evil Priestess in one of the films Jones is perusing for clues.
Anna Wilson-Jones plays Emma Harris In this episode. She previously appeared in episode 8.4 Bantling Boy (2005) in the role of Marianna Hartley.
Harriet Walter plays Diana Davenport in this episode. She previously played the role of Margaret Winstanley in episode 8.3, Orchis Fatalis (2005).
John Carson, who has a small part in this story, has appeared in a few horror films, notably Taste the Blood of Dracula (1970) and Hammer House of Horror (1980).