The Unbreakable Code
"Mr. Quisling is definitely up to something mysterious, and Emily and James are on high alert.
FIC
year: 2018
copies: 58
call number/section: FIC
lexile: 840
subjects: ciphers, adventure and adventurers, arson, treasure hunt (game), books and reading [X], publishers and publishing, san francisco (calif.) [X], adventure fiction, mystery fiction, cryptography, cryptologic fiction, action and adventure fiction, detective and mystery fiction [X]