When a school trip to Madrid's Prado Museum turns into a recruitment mission for a secret organization, two teenagers discover that the city's ancient stones hold more mysteries than they ever imagined.
Fourteen-year-old Marco and Elena thought their biggest worry was surviving another boring museum tour. But when Marco's keen observation skills help expose an art forger, they catch the attention of the IYIA (Institute for Youth Intelligence and Archaeology)-a secretive organization dedicated to protecting Spain's cultural heritage.
Whisked away to a hidden world beneath Madrid's bustling streets, the unlikely pair must navigate high-tech training, decode centuries-old mysteries, and uncover a conspiracy that threatens the very heart of Spanish history. When the Crown Jewels are stolen from the Royal Palace, Elena and Marco find themselves pursuing the guila Doble, a shadowy organization with ties to a legendary medieval thief known only as the Phantom.
From the echoing halls of Prado Museum to the ancient Temple of Debod, from Plaza Mayor's cobblestones to the vibrant chaos of the San Isidro festival, this thrilling adventure weaves together:
Madrid's culture and history brought vividly to lifeHigh-stakes espionage with cutting-edge technologyAncient mysteries hidden in Madrid's forgotten waterways and tunnelsPerfect for readers who love: Mythology, adventures, history, and fast-paced international thrillers with heart. This coming-of-age story combines the excitement of spy stories with the authentic cultural immersion of the best travel fiction.