Xavier Quinzá Lleó is a Spanish writer, known for his historical fiction novels set mainly in Valencia. He has published works such as "El Misteri del Castell de Xàtiva", "El Sant Grial de la Corona d'Aragó", and "El Secret del Papa Lluna". His work is characterized by thorough historical research and detailed settings. In addition to his literary facet, he has developed a career in the legal field, reaching the position of judge.