Book excerpt: Pre-school teacher Nancy Stern is in a personal and professional rut. But what really puts a dent in her self-esteem is the realization that another woman named Nancy Stern has just moved into her building... a Nancy Stern who lives in the penthouse... A Nancy Stern who interviews celebrities for glossy magazines... a Nancy Stern who's chummy with Kevin Costner. Nancy's loss of her own specialness deepens as she keeps getting the other, more glamorous Nancy's mail, phone calls and party invitations by mistake. It's all too much to bear--until a man calls one night, intending to ask the other Nancy out on a blind date. What follows is a raucous and romantic involving mix-ups, mistaken identity, and murder ...