Intermediate. Héctor arrives in Barcelona with plans to work on his doctoral thesis, but gets caught up in a mysterious plot involving the work of the architect Antoni Gaudí. A frenetic journey around Gaudí's Barcelona ensues, as Héctor uncovers the secret to why La Sagrada Familia remains unfinished a century after the architect's death. From the reader series Lecturas de Enigma y Misterio, a collection of graded readers set in different places around Spain and Latin America in which mystery takes center stage. Includes an Audio CD of the text.