Continuity mistake: When Sir James and Sylvia arrive by coach at the Tompson home, the driver carries their baggage to the door. He is played by a younger actor with darker hair initially, but when the shot changes to the door of the house, he is suddenly being played by a noticeably older actor with grey hair yet wearing the same clothes and still carrying the same bags.
Continuity mistake: As Alice discusses Squire Hamilton at the Tompson house, we see Sylvia putting away some of her clothes into a wardrobe. She puts a large dress onto a hanger, and inside, which immediately disappears when the shot changes. She then puts another smaller item onto a hanger and inside, and when the shot changes, she can be seen putting the same item into the wardrobe again.
Other mistake: When Sir James examines a book on witchcraft in the Vicar's library, it is a photographic reprint (more contemporary to 1966) of a much older, original book.
Sir James Forbes: High-ate-ee is how he pronounces Haiti.
Sir James Forbes: I, I find all kinds of witchcraft slightly nauseating and this I find absolutely disgusting.
Sir James Forbes: Someone in this village is practicing witchcraft. That corpse wandering on the moors is an undead, a zombie.
