The book El gran secreto del islam was published on October 22, 2025. It is the Spanish translation of The Great Secret of Islam.
As with the English and French editions, it is available as a free PDF version (under a Creative Commons license), and on Amazon in both paperback and ebook formats (available here on Amazon.com and here on Amazon.es — it is also available on all Amazon websites and affiliated bookshops: US; ES; FR; UK; DE; IT; NL; PL; SE; BE; IE; JP; CA; AU).
A Spanish website has been specially launched for its distribution: www.elgransecretodelislam.com
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The great secret of Islam 
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