On a warm summer morning in North Carthage, Missouri, it is Nick and Amy Dunne’s fifth wedding anniversary. Presents are being wrapped and reservations are being 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 could have put anyone dangerously on edge. With his twin sister, Margo, at his side, Nick stands by his innocence. Trouble is, if Nick didn’t do it, where is that beautiful wife? And what was in that silvery gift box hidden in the back of her bedroom closet?