Rotten (The Sisters Grimm) (Volume 1)

A debut novel for child author Lily Sayre, Rotten mixes humor with a deadly plot. The main character, Avalon, gets landed with a sub when her teacher takes a mysterious sick week. Online, rumors fly that this substitute is some kind of monster, but Avalon doesn’t know if she can believe them. Her fellow classmates band together to help her figure out what’s true and what’s not, and that’s when things begin to go wrong. Three days into the week, things are positively rotten.