Clifford, Riley 's Books
A very well recieved series by Clifford, Riley are the books, featuring tropes. The most popular books are 39 Clues Rapid Fire 1 Legacy, Operation Trinity, 39 Clues Rapid Fire 2 Ignition, Silent Night, 39 Clues Rapid Fire 4 Crushed, The 39 Clues: Cahill Files: Silent Night, 39 Clues Rapid Fire 7 Fireworks, The Submarine Job, The Redcoat Chase, The Houdini Escape, which was published in 2022.
39 Clues Rapid Fire 1 Legacy
Operation Trinity
39 Clues Rapid Fire 2 Ignition
Silent Night
39 Clues Rapid Fire 4 Crushed
The 39 Clues: Cahill Files: Silent Night
39 Clues Rapid Fire 7 Fireworks
The Submarine Job
The Redcoat Chase
The Houdini Escape