Densham, a successful Hollywood writer, director and producer, presents a genial guide to the vagaries of Hollywood screenwriting. He explores the existential desire to write for the movies and how to nurture it; outlines the basic structure and anatomy of a successful screenplay; and describes the process of networking, selling and developing one's work. He offers suggestions on maintaining creative momentum and exercises for generating it, includes short reflections from a dozen successful writers, and recommends 10 titles to anchor a screenwriter's library. Annotation 2011 Book News, Inc., Portland, OR (booknews.com)