"The third book in the magical chapter-book adventure series by the Governor General Award--winning author of Sweep, in which Auggie and his friends meet another one-of-a-kind creature: the Shibboleth! On an island at the top of the world are the Fabled Stables, a one-of-a-kind place for one-of-a-kind creatures. Auggie is their caretaker, and it's his job to strike out into the Wide World and save creatures from danger. This time, he and his friends are tasked with saving the Shibboleth. They hop through the portal and find themselves in the evil Rooks' lair! There, they meet a young girl named Veena and a monster . . . with a belly full of Rooks! It turns out, whenever anyone speaks to the Shibboleth, it gobbles them whole. Auggie puts on his gentlest voice to try to calm the beast, but he's swallowed in one gulp. Soon, with some help from Veena and a magic book, Auggie discovers that the Shibboleth eats anyone who doesn't call it by name. They save themselves and the creature with this simple act of kindness.".