The 39 Clues

1. 

   Book 3

   The Sword Thief (The 39 Clues, #3)

   Peter Lerangis

2. 

   Book 4

   Beyond the Grave (The 39 Clues, #4)

   Jude Watson

3. 

   Book 5

   The Black Circle (The 39 Clues, #5)

   Patrick Carman

4. 

   Book 6

   In Too Deep (The 39 Clues, #6)

   Jude Watson

5. 

   Book 9

   Storm Warning (The 39 Clues #9)

   Linda Sue Park

6. 

   One False Note

   Gordon Korman

7. Vespers RisingRick Riordan, Peter Lerangis, Jude WatsonWatson

   V

   Vespers Rising

   Rick Riordan, Peter Lerangis, Jude Watson

8. 

   The 39 Clues

   Jude Watson

9. 

   Into the Gauntlet

   Margaret Peterson Haddix

10. 

    The Viper's Nest

    Peter Lerangis

11. 

    The Emperor's Code

    Gordon Korman

12. 

    The Sword Thief (The 39 Clues, #3)

    Peter Lerangis

Book data and covers from Open Library (openlibrary.org).