Lord James searches through a collection of ancient 78-rpm shellac discs. Although he plays one of the discs on a modern-day turntable that is capable of playing them, the music heard is electronic-based and has excellent fidelity. However, shellac records had notoriously low sound quality and were discontinued decades before synthesizers were used regularly in music production.
As Mary and Angus walk home through the grove after the party, Lady Sylvia's Jaguar passes them. Startled, Mary comments on the car and mentions its headlights being off, though they were clearly on in every shot of the car.
Mary later states that the headlights were "hooded". Hoods were used in Britain during the Blitz.
When Eve is tied up and waiting to be sacrificed, Lady Sylvia places the Dionin skull next to her and walks away. Several seconds later the skull disappears while Eve is struggling to get away, but it reappears when Sylvia returns.