, written by J.M. Coya Martín , is a historical thriller and mystery novel that intertwines two timelines—the 15th century and the 21st century—around a secret capable of altering the world. Plot Summary The narrative follows two parallel journeys:

Soldiers bearing the cross of the Knights Templar seize the Abbey of Montserrat. They force Fray Nicasio to translate a mysterious text. Realizing the text contains power that could dismantle the Church's authority or cure worldwide illness, Nicasio flees across the Camino de Santiago to protect it.

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