A writer who lives in the southern Spanish city of Malaga.
Sierra is the author of El Secreto Templario, María Jesús de Ágreda, La monja mística and Los enigmas de las civilizaciones perdidas.
All of his novels have the common purpose of seeking to solve historical mysteries based on real documentation and extensive field research.
Sierra, whose work La cena secreta became a bestseller in the Spanish-speaking world, has been published in 35 countries.
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