These decodable books build upon prior phonics skills learned in sets 1-50 and the phonics skills emphasized in this set.  In this book, students will explore prefixes, suffixes, and common phonograms specific to this level. 
Titles in the series include: "The Case of the Horned Shadow", "The Case of the Missing Dogs", "The Case of the Apparent PUNchline", "The Case of the Disappearing Donuts", & "The Case of the Homecoming Hijinks"