▷ Libros infantiles con VALORES y novelas juveniles【2025】: respeto, amistad, cuentos para ir a dormir... Ideal para PRIMARIA
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With numerous illustrations that enrich the adventure, this children’s book is recommended for boys and girls aged 6 and up.

A young detective who won’t rest until the case is solved.​

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The most beautiful and valuable books in the library are disappearing.
It’s something that has no explanation.
Will Lucy be able to solve the mystery?
A children’s book full of mystery, humour, and adventure.


What can you expect?
  • ​Clues, suspects, and unexpected twists that keep the excitement going until the very end.
  • Humour and funny situations that will make little ones laugh.
  • A positive message about the value of reading.
  • A surprising ending that invites reflection.
  • Simple and lively language, perfect for early readers.
This book helps children to:
  • Develop logical thinking and observation skills.
  • Enjoy reading through an engaging mystery.
  • Encourage imagination and a love of solving puzzles.
  • Appreciate the importance of books and knowledge.
  • Learn to work as a team and not give up when facing challenges.
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