Local author Marci Diehl will discuss her novel, What You Don’t Know Now (Merge Publishing), and take questions from the audience. While Marci Diehl is best known as an essayist, writer and editor for national, regional and local magazines, Diehl has written fiction since she was a child, and kept a “log” of her experiences as an 18-year-old on an ill-fated bus tour of Europe. That log developed into her debut novel.