Stephenie Meyer, the person responsible for the mind-numbingly annoying Twilight Saga, also wrote a book which does not involve, or revolve around, the bland love story between a girl (who seems to be constantly drowsy) and a vampire (who seems to be incapable of using his facial muscles to their full capacity). I am sure that the Twilight books are much better than the movie franchise, but this one actually looks really good. "The Host" tells the story of a woman in the middle of an interesting alien invasion scenario, where aliens create the perfect society by integrating themselves to the majority of the human population.
Saoirse Ronan stars in the film and Diane Kruger is in it too, so that's some great casting so far! The film comes out March 2013 and I can say that I can't wait to see it. (Cool trailer soundtrack by the way)