Sharon Moore is convinced her possessive, obsessive husband, Hank, is trying to poison her. Sharon and her six-year-old son David leave Hank in San Francisco and move to Seattle, where she assumes the identity of Janice Young, a woman Sharon's age that died in a car accident. Sharon sets up a new life for her and David but several months later, Sharon comes across some bizarre circumstances that nearly cost her life. She's convinced someone is following her, but is not sure which of her identities - Sharon or Janice - is in danger.