Author: Celis, Agustín; Ramírez, Alejandra
- Children/Young
- Oxford University Press España, S.A.
- ISBN: 9788498110401
- Release Date: 01-01-1970
-Reviewed by: America Reads Spanish

One of the things Cristina likes best is to dream, but to daydream. Such is the case that she thinks that her grandfather is a duke and that his home is Elanor Castle, an enchanted place. There is where she spends her daydream summer vacation. It is July already, there are few days of vacation left, and she begins preparations to get to this magic place and find new mysteries to solve. What our protagonist doesn’t know is that this summer, once it comes, she will find a real mystery.