AR Book Level
4.8
AR Points
3
Word Count
18,121
Interest Level
Middle Grades (MG 4-8)
Genre
Fiction
AR Quiz #
232847 EN
About this book
Cass and her best friends are the Bubble Street Gang! They investigate crimes, solve mysteries and have adventures. Cass has a particular mystery to solve. Who is the invisible boy? And why can't anyone see him? Book #2