Mystery! Lollipops! When a mysterious thief called The Black Boot takes credit for stealing the school's mascots, Maisy Sawyer has a mystery to solve! Maisy is the best detective in fourth grade. No, she's the best detective in the whole school, and rescuing the little mice is her new mission. Raising the stakes, The Black Boot has also taken Maisy's famous lollipop collection, and warns her to stop searching for the mice if she ever wants to see her lollipops again. Follow the clues as Maisy tries to discover the identity of The Black Boot and struggles to find her prized lollipops and the school's mascots in the first book in The Maisy Files series. Dive into Maisy's world of mysteries and lollipops today!