Up and coming architect Debra Paley endured a lifetime of nightmares that resulted in psychosomatic illness. These nightmares combined with the odd recurrence that Debra is often mistaken for a girl named Nicole lead a parapsychologist to conclude Debra is picking up the vibrations of another person.
When Debra begins work at the prestigious St. Claire Architectural Firm, she meets and falls in love with Terry St. Claire. Coworker Anita Parker, obsessed with Terry, sabotages Debra's drawings and plots to murder her.
Meanwhile, two men are following wealthy Terry St. Claire with plans for a kidnapping.
On Halloween Eve, at the opening of the firm's latest project, The Carlotta Inn, Anita is prepared to carry out her murderous plot. But the evening proves to be full of surprises for both Anita and Debra as the mystery of Debra's psychosomatic illnesses is finally solved.