Countdown (The 39 Clues: Unstoppable, Book 3)

Flashpoint (The 39 Clues: Unstoppable, Book 4)

Nowhere to Run (The 39 Clues: Unstoppable, Book 1)

Day of Doom (The 39 Clues: Cahills vs. Vespers, Book 6)

Mission Atomic (The 39 Clues: Doublecross, Book 4)

Mission Titanic (The 39 Clues: Doublecross, Book 1)

A King's Ransom (The 39 Clues: Cahills vs. Vespers, Book 2)

The Dead of Night (The 39 Clues: Cahills vs. Vespers, Book 3)

The Viper's Nest (The 39 Clues, Book 7)

In Too Deep (The 39 Clues, Book 6)

Into the Gauntlet (The 39 Clues, Book 10)

Operation Trinity (The 39 Clues: The Cahill Files, Book 1)

Trust No One (The 39 Clues: Cahills vs. Vespers, Book 5)

The Sword Thief (The 39 Clues, Book 3)

Beyond the Grave (The 39 Clues, Book 4)

The Black Circle (The 39 Clues, Book 5)

Shatterproof (The 39 Clues: Cahills vs. Vespers, Book 4)

Mission Hindenburg (The 39 Clues: Doublecross, Book 2)

Storm Warning (The 39 Clues, Book 9)

The Mission Hurricane (The 39 Clues: Doublecross, Book 3)