The mysterious Black Boot has stolen the school mascots.<br /><br />Maisy Sawyer has a mystery to solve - and she&#39;s the best detective in fourth grade. No, she is the best detective in the whole school, and rescuing the little mice is her new mission.<br /><br />Raising the stakes, The Black Boot has also taken Maisy&rsquo;s famous lollipop collection and warns her to stop searching for the mice if she ever wants to see her lollipops again.<br /><br />Follow the clues as Maisy tries to discover the identity of The Black Boot and find her prized lollipops - and the school mascots - in the first book in The Maisy Files series.