The chilling story of identical twin gynaecologists—suave Elliot and sensitive Beverly, bipolar sides of one personality—who share the same practice, the same apartment, the same women. When a new patient, glamorous actress Claire Niveau, challenges their eerie bond, they descend into a whirlpool of sexual confusion, drugs, and madness. Jeremy Irons's tour-de-force performance—as both twins—raises disturbing questions about the nature of personal identity.