39 Clues

1. Maze of Bones...Riordan, Rick
2. One False Note...Korman, Gordon
3. Sword Thief...Lerangis, Peter
4. Beyond the Grave...Watson, Jude
5. Black Circle...Carman, Patrick
6. In Too Deep...Watson, Jude
7. Viper's Nest...Oerangis, Peter
8. Emperors Code...Korman, Gordon
9. Storm Warning...Park, Linda Sue
10. Into the Gauntlet...Haddix, Margaret Peterson
    
11. Black Book of Buried Secrets...Kass, Mallory
12. Vespers Rising...Ves for Vespers-multiple authors