The Sunday Conversation: Saoirse Ronan

The young screen veteran plays two characters existing in the same body in a new sci-fi romantic film 'Host' based on a novel by 'Twilight' author Stephenie Meyer.Saoirse (pronounced SIR-sha, "like inertia") Ronan plays an alien and a human in the same body in the new romantic sci-fi film "The Host," based on a book by "Twilight" series author Stephenie Meyer. Ronan, who turns 19 in April, is already a seasoned thespian, with an Oscar nod for her performance in 2007's "Atonement."