Maeve O'Shaughnessy has been writing novels to great critical acclaim for twenty years without ever making a public appearance. But when her publisher insists she begin promoting her own books, Maeve, a recluse with anxiety disorder, cannot face such a terrifying ordeal. Instead, she recruits her identical twin, Margaret, to be her public persona.
Despite her misgivings, Margaret-recently divorced and in need of income-agrees. Problems quickly arise, from being recognized by acquaintances to falling in love with a man who hero-worships Maeve. With every talk or book signing, the line between her own personality and her sister's blurs a little more. When Maeve is critically injured in a car accident, Margaret faces the most harrowing decision of all: Will she continue to live as Maeve, or will she take possession of her own life and become the woman she was always meant to be?