From a Guardian interview with Gillian Flynn:
http://www.theguardian.com/books/2013/may/01/gillian-flynn-bestseller-gone-girl-misogyny
"To me, that puts a very, very small window on what feminism is," she responds. "Is it really only girl power, and you-go-girl, and empower yourself, and be the best you can be? For me, it's also the ability to have women who are bad characters ? the one thing that really frustrates me is this idea that women are innately good, innately nurturing. In literature, they can be dismissably bad ? trampy, vampy, bitchy types ? but there's still a big pushback against the idea that women can be just pragmatically evil, bad and selfish ... I don't write psycho bitches. The psycho ***** is just crazy ? she has no motive, and so she's a dismissible person because of her psycho-bitchiness." Writing on her website, she concedes that hers is "not a particularly flattering portrait of women, but that's fine by me. Isn't it time to acknowledge the ugly side? I've grown quite weary of the spunky heroines, brave rape victims, soul-searching fashionistas that stock so many books. I particularly mourn the lack of female villains." It should probably be added that her lurid plots make no claim to social realism: to interpret her evil female characters as somehow representative of their real-life gender, you must willfully overlook hundreds of pages of other people and events that you'd almost certainly never encounter in reality, either.
Basically, evil women are the fleshing out of the entire human experience in the way men get to be both heroes and villains indiscriminately. Fair enough; hell, makes the children's book thing, starring a flawless female lead, make a lot more sense in context.
Still, I too went to that place the second I heard the twist and in some way it's still trading on the dynamic that the woman is usually smarter and far more put together (good or evil) while the man is a lunk-head. I mentioned this before in another thread in that I feel the pendulum seems to swing too far in one direction or the other to fulfill some societal need to empower either sex at the supposed cost of the other and I don't know of a lot of films or stories that involve two people of opposite sexes being on equal footing, though maybe I just don't know about them. I get that there's a lot more to it than this surface reading - modern society is practiced insanity seems to be the main hook - but it seems to me at least that the "battle of the sexes" is just something that's going to be more immediate in focus.