The Missing Case is the second book in the Hal Junior Series. Middle-grade science fiction. 32,000 words, 190 pages, 20 illustrations. Middle-grade science fiction (funny books for kids). Book one, The Secret Signal, is also available in paperback and Kindle ebook editions. With its funny illustrations, engaging characters and easy-to-read text, Hal Junior is ideal for reluctant readers. Reluctant boys will especially enjoy troublemaker Hal Junior's hair-raising adventures. In time, this middle-grade series for 9 to 12 year olds is sure to join the ranks of middle grade fiction best sellers.