The magical must-read middle-grade novel from the bestselling author of THE POLAR BEAR EXPLORERS' CLUB and FROZEN CHARLOTTE. Bess has always loved her grandfather's collection of curiosities. So she's delighted when she's handed the keys to his Odditorium.

But unless she finds a way to draw in the crowds, she'll have to close its doors for good. When a mysterious train pulls into town, bound for The Land of Halloween Sweets, Bess hatches a plan and sneaks onboard. She is soon discovered by Beau the puppeteer, Louis the violinist and Maria the fire witch.

Eager to join their adventure, Bess sets out to search for the rarest sweet of all - the ghostly gobstopper. But the land is ruled by the fearsome Candymaker. And beneath the sugary surface, things are more dangerous than they first appear...