Who is the Mystery Reader by Mo Willems is the first of the Unlimited Squirrels series. The wonderful and heroic mystery reader takes early readers on a frolic through the challenges of reading and writing as he teaches a group of squirrels about the art of sounding out letters and learning to read. This book is packed with silly jokes and a fair amount of information on how the author thinks up a story. The whimsical characters are classic Willems and a delightful start to this series. You can't go wrong with a mask and underpants to give you the courage to read an important sign!