Stephanie Meyer, writer of the Twilight book series, also wrote a book called The Host. Its about alien beings from another planet coming to Earth and taking over the bodies of humans. One of the humans refuses to give up control of her mind and body and becomes co-inhabited. The movie adaptation hits theaters in March of 2013. It will star Saoirse Ronan, William Hurt, Diane Kruger and many more. It will be directed by Andrew Niccol (In Time). Check out a teaser below.