Librería Samer Atenea
Librería Aciertas (Toledo)
Kálamo Books
Librería Perelló (Valencia)
Librería Elías (Asturias)
Donde los libros
Librería Kolima (Madrid)
Librería Proteo (Málaga)
This Christmas, siblings discover that every gift comes with a puzzle! Grandma and Grandpa have given mirror ciphers that must be solved before each present can be opened. From baking cookies to building a snowman every clue unlocks a new holiday adventure. But the best surprise waits at the very end! In each adventure, kids not only join the treasure hunt, but also learn fun new skills-like cracking secret codes or reading maps-that they can use in their own quests!