The fast paced dialogue and slapstick visual comedy of the squirrel pack keep children laughing through every page of the investigation.
By dressing the reader in a cape and mask, Mo Willems transforms the daunting task of decoding words into a thrilling secret identity that kids want to claim.
Children feel like insiders as the characters break the fourth wall to explain the roles of authors, illustrators, and the very pages they are holding.
The mystery structure invites young readers to hunt for visual clues alongside the characters to figure out who the visitor is before the final reveal.
The recurring silly jokes and squirrel themed puns reward kids who are just starting to understand the double meanings of words.

Reach for this book when your child is on the cusp of reading independently but feels intimidated by the challenge. It is the perfect antidote to 'reading jitters' for children who are transitioning from being read to toward decoding words on their own. The story follows a group of high-energy squirrels trying to unmask a 'Mystery Reader' in their midst, turning the mechanics of literacy into a hilarious game of detective work. Mo Willems masterfully uses humor and meta-commentary to demystify how books are made and read. By framing the act of reading as a superpower or a secret identity, the book builds self-confidence and celebrates the joy of storytelling. It is an ideal pick for children aged 6 to 8 who are moving into early chapter books and need a story that validates their progress with plenty of laughs and 'a-corny' jokes.