Continuity mistake: On the second night at Julia's, Laura has insomnia again and this time she gets up and goes down to the gardens, which are bathed in light - much more than from a full moon. When Mr Elliott turns up while the girls are working, Laura says to him "Were you out star gazing last night, Mr Elliott?" And he says "Indeed I was, a partial lunar eclipse in wonderful darkness."
Continuity mistake: When Rosemary finds her second bunch of smooth ink cap mushrooms and picks one, then declares, "Fungus Ferguson. My old college professor," who will be able to tell Rosemary what is special about smooth ink caps - this has been bugging Rosemary for days - and then grabs her cardigan without dealing with the mushroom in her hands, which is no longer to be seen.