Librería Samer Atenea
Librería Aciertas (Toledo)
Kálamo Books
Librería Perelló (Valencia)
Librería Elías (Asturias)
Donde los libros
Librería Kolima (Madrid)
Librería Proteo (Málaga)
In the year 1258, an old parchment leads two boys onto a perilous trail: Wilhelm Urner, the son of a farmer, and Walter von Wolfenschießen, born of noble blood, uncover the secret of a lost Kyburg treasure. Together with Judith ab Dorf, they embark on a daring adventure just as the feud with the Gruoba knights threatens the valley of Uri. Between the tower of Bürglen, a mysterious isle on Lake Uri, and a hidden cave at Diegisbalm, friendship, loyalty, and courage are put to the test. What begins as a quest for gold becomes a trial of spirit that will change their lives and the fate of their land forever.