de Richeleau Adventure No. X. The Duke de Richeleau and his friends had faced many dangers in Russia, Spain and Nazi Germany. Now a new and unexpected menace confronts them: the fourth, Rex Van Ryn is missing and he has made off with more than a million dollars from the Buenos Aires branch of his family bank. Behind the conventional courtesy of Argentinian society lies a conspiracy of terror and silence - and a trail that leads straight to the Devil himself...Illustrated by Virginia Smith.