In the ninth book of the Calendar Mysteries, an early chapter-book mystery series featuring the younger siblings of the A to Z Mysteries detectives, Bradley, Brian, Nate, and Lucy have taken care of the first-grade class hamster, Goldi, for the summer. But on the first day of school, when they plan to bring her back, Goldi is missing! In place of her cage is a green-and-orange sneaker key chain. Soon, the kids spot green-and-orange sneakers all over Green Lawn. And they find out other things have been disappearing around town, too. Can the four friends track down the sneaker sneak and get Goldi back?

It's a mystery every month from popular A to Z Mysteries author Ron Roy! With the younger siblings of the A to Z Mysteries kids! September is for Sneakers... In the ninth book of the Calendar Mysteries- an early chapter-book mystery series- Bradley, Brian, Nate, and Lucy have taken care of the first-grade class hamster, Goldi, for the summer. But on the first day of school, when they plan to bring her back, Goldi is missing! In place of her cage is a green-and-orange sneaker key chain. Soon, the kids spot green-and-orange sneakers all over Green Lawn. And they find out other things have been disappearing around town, too. Can the four friends track down the sneaker sneak and get Goldi back?

Dora is missing her sneaker. Swiper is missing his skate. Where did all of the shoes go? Help Dora and her friends solve the mystery of the missing shoes!