Tuesdays at the Castle (Grades 3-6) by Jessica Day GeorgePrincess Celie loves Tuesdays at Castle Glower, because every Tuesday the castle adds a new room, a turret, or sometimes a whole new wing, and Celie likes to map the changes to the castle, but when her parents, King and Queen Glower are taken captive, it falls to Celie and her knowledge of the castle to defend their home and save the kingdom.