Since its debut in 2013, the Spanish book series , written by Roberto Santiago and illustrated by Enrique Lorenzo, has become a global phenomenon for young readers. Blending the high-stakes excitement of youth football with the intrigue of detective mysteries, the series has captivated millions and even inspired a major motion picture. The Core Premise: More Than Just a Team

: Many libraries and online archives offer free access to a wide range of documents, including PDFs on various subjects.

| Book Number | Title (Spanish) | English Translation | Year | |-------------|----------------|---------------------|------| | 1 | El misterio del gol de oro | The Mystery of the Golden Goal | 2013 | | 2 | El misterio del ojo de halcón | The Mystery of the Hawk’s Eye | 2014 | | 3 | El misterio del tornado humano | The Mystery of the Human Tornado | 2014 | | 4 | El misterio del jugador número 13 | The Mystery of Player Number 13 | 2015 | | 5 | El misterio del árbitro fantasma | The Mystery of the Ghost Referee | 2015 | | 6 | El misterio de la puerta trasera | The Mystery of the Back Door | 2016 | | 7 | El misterio del penalti imposible | The Mystery of the Impossible Penalty | 2016 | | 8 | El misterio del niño invisible | The Mystery of the Invisible Boy | 2017 | | 9 | El misterio del tesoro del fútbol | The Mystery of the Soccer Treasure | 2018 | | 10 | El misterio de los árbitros dormidos | The Mystery of the Sleeping Referees | 2019 | | 11–15+ | Various titles released through 2024 | – | – |

The book series by Roberto Santiago is widely available for reading in digital formats, though full official PDFs for all books are generally protected by copyright. You can find official samples, digital editions, and specific excerpts through the following sources: Official Samples and Reading Previews