When Jill learns that her former friend Maddy Usher is dead, excruciating memories of being abandoned by Maddy and her twin Rick are conjured up. But Jill realizes that attending the funeral may be her only opportunity for closure. Arriving at Usher House, Jill encounters her former lover Rick, now afflicted by the same illness that took his sister. Jill is drawn by the seductiveness of the immense mansion and the aristocratic family, but most of all, the man himself. Undeterred by the family caretaker's menacing warnings, Jill's feeling for Rick and her curiosity about the house grow deeper, leading her toward a dangerous, irreversible end.