Liliane Brousse is dubbed by Christine Finn.
At 20:09 estate administrator Kossett tells Simon Ashby that Ashby will likely "Drink yourself to death...". This is prophetic as the actor portraying Simon Ashby, Oliver Reed, had a fatal heart attack in 1999 at the age of 61 due to his severe alcoholism.
Another version of Josephine Tey's novel "Brat Farrar" had appeared on "Hammer"'s schedule as far back as 1952.
The film takes place in 1961.