Newly-widowed Mabel Lederer, who has psychic and mediumistic abilities, sells her house and belongings, changes her name, and moves to a new town. There she rents a room in a boarding house and holds a seance with the other tenants, with comical results.

After completing his training of ninjutsu within Japan, an American Angolan Bush War veteran by the name of Cole visits his war buddy Frank Landers and his newly wed wife Mary Ann, who are the owners of a large piece of farming land in the Philippines. Cole soon finds that the Landers are being repeatedly harassed by a CEO named Charles Venarius.

The San Francisco area is beset by a series of seemingly random murders without motive or pattern. The police are taunted by phone calls and letters. Could the maniac be the violent, truck driver, or the seemingly mild-mannered mailman, or even a cop?