by Amanda Gebhardt (Author) Leo Trinidad (Illustrator)
The school janitor knows more than he's willing to say, so it's up to Max, Liz, and Chen to figure out what's got him so on edge in Book 6 of the Code Breakers series.
This decodable chapter book lets upper elementary readers build fluency with R-controlled vowels and diphthongs while unraveling this page-turning mystery..
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