Jonathan Frid portrays a horror novelist who has a recurring nightmare about three figures out of his book who terrorize him and his family and friends during a weekend of fun. Then the dream becomes reality and it never ends.
The stern matriarch of a family that lives in a creepy mansion finds that a killer is hiding in the house, searching for a $500,000 fortune rumored to be hidden there and chopping off the heads of anyone who gets in the way.
Vincent Bruce, a war veteran, begins working as an occupational therapist at Poplar Lodge, a private psychiatric facility for wealthy people where he meets Lilith Arthur, a charming young woman suffering from schizophrenia, whose fragile beauty captivates all who meet her.