Okay, I really don't understand how someone came up with this one, unless their intention was for a "what-if" kinda thing. The reason being, and it should be obvious what I'm about to say, that the entire premise of the movie is a biological impossibility. It might make for a good dramatic plot, but it's a well known fact that it is absolutely impossible for a woman to become pregnant with twins that don't have the same father. I'll admit this isn't a terrible movie without value whatsoever, but I personally just couldn't enjoy it due to admittedly unimaginative brain in my skull nagging me about the impossible nature of the plot. In other words, it could very well be a great movie, and I don't mean to infer it is a total piece of trash, I'm simply too smart to let myself enjoy it, even just for what it is.