Your students love spooky books, and those students in need of hi-lo intervention books are no different. Teachers tell us that the supernatural mysteries in the Extraordinary Files have often been the first books their struggling readers have actually finished! With diverse characters, creepy plotlines involving aliens and vampires, graphic-novel-style illustrations, these little chapter books are just what your students want to read. There are 16 books to choose from. Guided reading level range: T–Y.