Factual error: During the credits, as the house is shown, a paper wasp nest is shown hanging from the eaves. Crawling all over it are honeybees, which do not live in paper nests.
Continuity: When the lawyer, Laura, is in her room in two scenes, one of which is when she checks on a letter almost at the end of the film, her hair is lighter than the rest of the movie, where her hair is noticeably darker.