Space Aliens invade Earth

The Host by Stephanie Meyer has been made into a motion picture from Open Road Films.  It will be released on March 29, 2013 and stars Saoirse Ronan, Diane Kruger, William Hurt, Max Irons and Jake Abel.  Alien souls invade Earth and possess human bodies.  A small enclave of untainted humans form the Resistance movement to save the human race.  Reminiscent of Invasion of the Body Snatchers.