H. Irving Hancock / HIrving Hancock
Librería Samer Atenea
Librería Aciertas (Toledo)
Kálamo Books
Librería Perelló (Valencia)
Librería Elías (Asturias)
Donde los libros
Librería Kolima (Madrid)
Librería Proteo (Málaga)
Dave, now a naval officer in the U.S. Navy, is sent on service in the Mediterranean following the close of World War I. With his friend Dan Dalzell, Dave encounters spies in Gibraltar and begins what may be his greatest case—unravelling the mystery that threatens to involve the United States in European intrigue!