Javier Sierra lives in Málaga on the Costa del Sol, Spain, and is the author of four books of nonfiction concerning historical and scientific enigmas, as well as four successful novels. The Secret Supper, Javier's first book to be published in the United States, hit #6 on the New York Times bestsellers list, #2 on the Publishers Weekly list, and #3 on the Wall Street Journal and Washington Post lists. Internationally, it was a #1 bestseller in Italy and Lithuania, #3 in Canada, and #5 in Spain. To date, it has been published in forty countries, including Germany, France, Norway, Sweden, Finland, Denmark, Poland, Korea, Romania, Greece, Serbia, Slovakia and Portugal.
Sierra has visited more than twenty countries, probing their mysteries. Egypt is the country he is most familiar with, having traveled there numerous times. During his research in Turkey, he sought—and found—the controversial map of Piri Reis, a document offering definitive proof that Christopher Columbus arrived in America thanks to previous navigational charts made prior to 1492, which already reflected the New World in their routes.