On a warm summer morning in North Carthage, Missouri, it is Nick and Amy's fifth wedding anniversary. Presents are being wrapped and reservations made when Nick's clever and beautiful wife disappears from their rented McMansion on the Mississippi River. Husband-of-the-year Nick isn't doing himself any favors with cringe-worthy daydreams about the slope and shape of his wife's head, but passages from Amy's diary reveal the alpha-girl perfectionist...