It starts when Sharon McCone's acquaintance tells her that someone was
pretending to be McCone at a party. The mysterious woman is handing out
McCone's business cards, advising clients, and picking up men for
intimate encounters. The woman's physical resemblance is uncanny. Her
knowledge of McCone's life is chilling. To make matters worse, McCone's
office manager, Ted Smalley, has been acting oddly. As she reluctantly
decides to investigate Ted's behavior, McCone's double breaks into her
house, interferes with her family, and leads McCone in a terrifying game
of cat and mouse through the bizarre nightlife of San Francisco. McCone
begins to uncover Ted's desperate problem, but the imposter escalates
her dirty tricks. The determined PI must pull out all the stops to
defeat the criminal hitting too close to home.