Unlimited Squirrels in Who is the Mystery Reader?

From Mo Willems, creator of the revolutionary, award-winning, best-selling Elephant & Piggie books, comes this breakout beginning-reader series. An ensemble cast of Squirrels, Acorns, and pop-in guests host a page-turning extravaganza. Each book features a funny, furry adventure AND bonus jokes, quirky quizzes, nutty facts, and so, so many Squirrels.