The 39 Clues: Doublecross Book 1: Mission Titanic (1)
The Maze of Bones (39 Clues, No. 1)
The 39 Clues: Unstoppable Book 4: Flashpoint
The Viper's Nest (The 39 Clues, Book 7)
Mission Hindenburg (The 39 Clues: Doublecross, Book 2)
Beyond the Grave (The 39 Clues , Book 4)
Vespers Rising (The 39 Clues, Book 11)
The Day of Doom (The 39 Clues: Cahills vs. Vespers, Book 6) (6)
The 39 Clues: The Black Book of Buried Secrets
The 39 Clues: Cahills vs. Vespers Book 4: Shatterproof