The 39 Clues: Cahills vs. Vespers Book 1: The Medusa Plot Other Books in This Series

The 39 Clues: Cahills vs. Vespers Book 2: A King's Ransom The 39 Clues: Cahills vs. Vespers Book 2: A King's Ransom
The 39 Clues: Cahills vs. Vespers Book 2: A King's Ransom
2011
The 39 Clues: Cahills vs. Vespers Book 3: Dead of Night The 39 Clues: Cahills vs. Vespers Book 3: Dead of Night
The 39 Clues: Cahills vs. Vespers Book 3: Dead of Night
2012
The 39 Clues: Cahills vs. Vespers Book 4: Shatterproof The 39 Clues: Cahills vs. Vespers Book 4: Shatterproof
The 39 Clues: Cahills vs. Vespers Book 4: Shatterproof
2012
The 39 Clues: Cahills vs. Vespers Book 5: Trust No One The 39 Clues: Cahills vs. Vespers Book 5: Trust No One
The 39 Clues: Cahills vs. Vespers Book 5: Trust No One
2012
The 39 Clues: Cahills vs. Vespers Book 6: Day of Doom The 39 Clues: Cahills vs. Vespers Book 6: Day of Doom
The 39 Clues: Cahills vs. Vespers Book 6: Day of Doom
2013