The Cryptic CodeBook - 2009
Billy Blaster's ninja friend Wu Hoo is always on the lookout for secrets. One day, Wu Hoo finds a parchment with a coded message. Before he can decipher it, he's kidnapped!
Publisher: Mankato, Minn. : Stone Arch Books, 2009
Characteristics: 40 p. : col ill. ; 24 cm