An abandoned McMansion and its eerie medieval tower were built on a gravesite by unscrupulous contractors. A former owner knows its darkest secrets, and uses them to her advantage.An abandoned McMansion and its eerie medieval tower were built on a gravesite by unscrupulous contractors. A castle in a blighted neighborhood, it lures the desperate with its reputed magic powers. A former owner knows it darkest secrets, and uses them to her advantage.