Title: The Emperor's Code
Description: Amy and Dan are separated while trying to retrieve a clue which is guarded by thousands of soldiers and worry they cannot succeed apart.
Subjects: nyt:series_books=2010-05-01, New York Times bestseller, Family secrets, Brothers and sisters, Juvenile fiction, Ciphers, Fiction, Code and cipher stories, Adventure stories, Orphans, Mystery and detective stories, Children's fiction, Treasure hunt (Game), Adventure and adventurers, Families, Inheritance and succession, History, Genealogy, Cryptography, Familias, Geneología, Family life, Historia, Ficción juvenil, Criptografía, Spanish language materials