The Host (2013)

Cast: Saoirse Ronan, Diane Kruger, Max Irons, Jake Abel, William Hurt, Frances Fisher, Chandler Canterbury, Boyd Holbrook, Stephen Rider, Alex Russell

A parasitic alien soul is injected into the body of Melanie Stryder. Instead of carrying out her race's mission of taking over the Earth, "Wanda" (as she comes to be called) forms a bond with her host…