If there's aproblem in school, there's no substitute for the world-saving substituteteachers of the S.O.S.! This is the first book of this hilarious, highlyillustrated early chapter book series. When MiltonWorthy learns his classroom's pet ferret is the evil mastermind behind adastardly plot for world domination, it's more than just about any kid couldhandle. But then not every kid is the son of a member of the super-secret, super-awesome Society of Substitutes!Now it's up to Milton and his substitute teacher mom to save Beacher ElementarySchool before time runs out. HarperChapters build confident readers one chapter at atime! With short, fast-paced books, art on every page, and milestone markers atthe end of every chapter, they're the perfect next step for fans of I Can Read!