Mark Haddon is best known as a children’s author, so it’s no surprise that he would choose to write his first novel with a teenager as the central character. To hear Haddon tell it, in fact, he wasn’t entirely sure, at first, whether he was writing for adults at all. Regardless, The Curious Incident of the Dog in the Night-Time has become a major hit with adults and teens alike, and a movie deal is already in the works.