Trivia: Although it lasts for only 45 seconds on screen, the stabbing scene in the shower took seven days to shoot and used 70 different camera angles.
Trivia: This was filmed in only two days.
Trivia: The exterior of the house was actually shot at the Winchester Mansion. (Albeit not at the main entrance.) The Winchester Mansion was owned and built by Sarah Winchester, who was convinced that she was being haunted by the ghosts of those that were killed by the Winchester rifles her family had created. Throughout her life, she had more and more construction done on the house, often creating stairways and doors leading to nowhere, to try to "trick" the ghosts and keep them from getting her.