The narrative options are pretty simple, considering how many complications Flynn concocts. Either Amy was abducted, or Nick somehow faked the disappearance and killed her, or...well, let's stick to the evidence. We first hear from Amy by way of voice-over, as Pike reads diary entries from happier days. Soon the entries grow more foreboding. Long before she's aware of the diary's existence the local police detective assigned to the missing-person case, Rhonda Boney, speculates on Nick's guilt, and that look in his eyes that says: Something's wrong. Boney is played by Kim Dickens and whatever sort of Mark Twain-country Sherlock you imagined reading Flynn's book, Dickens is right on the money, a savvy voice of intelligence and reason. She's also a strong counter-argument to the line that "Gone Girl" has one particular vision or version of female behavior to offer. Carrie Coon is terrific as Nick's twin, Margo, the sounding board and Greek chorine who gets most of the choice wisecracks as she navigates the aftermath of Amy's disappearance.