"Billie and the Secret Mystery Club have found a mysterious note - in code! What does it say? And who could have sent it? One thing's for certain: it will take all the skills of the SMC to solve this mystery..."--Page [4] of cover.
year: 2014
call number/section: 1000
subjects: code and cipher stories, clubs, juvenile fiction, detective and mystery stories, fiction, juvenile works, mystery fiction