 CONT: When Sarah is in Marks attic, she looks at a book of the  Marquis de Sade in a trunk and it glows with white light. When Sarah  looks up, hypnotized by the book when it glows, her left hand runs  up to the top of her dress. However, in the very next shot, Sarahs  left hand is suddenly down and it runs up to the top of her dress  all over again.