Amy and Dan are a brother and sister of 11 and 14. They belong to the most influential family in the human history, The Cahills!!!
But it is not a happy family for the Cahills, they are arch enemies. They are divided up into 4 branches: Janus,Ekaterina,Lucian and Tomas. But how is this mysterious Madrigal’s and what do they want?
The 39 Clues lead Amy and Dan to find 39 ingredients to a secret formula, what will it be?
The 39 Clues is an audiobook for all ages and it teaches about History, Science and countries of the world.