Some Very Messy Medieval Magic is the third book in The Adventures of Pete and Weasel series by C. Lee McKenzie. The book starts out in a very relatable classroom, but something is wrong. Pete keeps hearing Fanon, his alligator familiar, talking to him in his mind.
Pete is a wizard who made a mistake during his last adventure. Now, he and his friend Weasel need to sneak out of class and try to fix the mistake. If they don't, history could be changed forever.