Trivia: In an early draft of the script, the story was re-written so that Hill House was actually a mental hospital where Eleanor was a patient, and the other characters were doctors and staff. It would be revealed that Eleanor was mentally ill and was misinterpreting the things around her as being supernatural in origin. However, this idea was discarded and the film was re-written to be more faithful to the original novel.
Trivia: Julie Harris was very aloof during filming and would often ignore her co-stars behind the scenes - especially Claire Bloom. Bloom felt very hurt by this. However, after filming, Harris showed up at Bloom's house with a gift and revealed that she actually really liked Bloom and her other co-stars. She behaved as she did during filming because she was trying to stay in-character between takes, and was worried that her performance as an outsider would suffer if she was friendly with her co-stars.
