No. 3 in the King Aldo series The mysterious disappearance of the Queen's Heart, the biggest ruby in the world, has the administrators of the Animaland Museum worried. And what is stranger, the fairies don't seem to be worried at all, even though the wicked children of Troublemaker and Leonora, the king and queen of the lions, visited the museum days before the event. With the help of three new friends, the Flying Castle Patrol regroups to solve this mystery once and for all, but they face a more urgent challenge... Join the Flying Castle Patrol on this puzzling adventure Bilingual...