Katherine Sullivan (Bo Derek) is a severe agoraphobic who takes permanent shelter in her home. But, when she witnesses what she believes is the murder of her husband, she is forced to confront the outside world, including a detective investigating the case. When the detective mysteriously disappears, Katherine begins to fear for both her safety and her sanity. Bewildered and petrified, she hires private eye Jack Mize (Stephen Shellen) to look into the strange sequence of events.