In addition to being the author of The Host, you're also a producer on the movie. How much creative input do you get?
It was basically me and one other producer and the director making all the creative decisions. That was a new experience for me, to be that involved. It was very cool.
You've written a lot about young people. What draws you to them as characters?
It's about the story I want to tell. With Bella [in Twilight], I wanted someone who was falling in love for the first time. With [The Host's] Melanie, I liked the...