Eve White, a mousy, withdrawn housewife startles her husband (David Wayne) when she claims she did not buy the flashy, provocative clothes he finds in their bedroom. After she complains of blackouts, he takes her to a psychiatrist (Lee J. Cobb) who soon encounters her second personality, Eve Black, a sexy, uninhibited woman. As Eve's therapy continues, her third self, the sensible, intelligent Jane appears to help resolve her rare multiple personality condition. Based on a true story, this acclaimed psychological drama brilliantly explores the dimensions of the human mind.