A wealthy man with a penchant for living on the edge and engaging in dangerous, life-threatening activities becomes romantically involved with a female university professor who has the same proclivities.

A crazed killer stalks the cast of a television soap-opera.

A sinister force permeating a secluded mountain estate convinces the nurse/companion of rock star Parker Stevenson, who has had a nervous collapse, that the house is alive and determined to keep her prisoner.