Columbia subject headings:
Harvard subject headings:
France--History--German occupation, 1940-1945--Fiction.
Thrillers (Fiction)
World War, 1939-1945--Secret service--France--Fiction.
Princeton subject headings:
Fiction.
France--History--German occupation, 1940-1945--Fiction.
Novels.
World War, 1939-1945--Secret service--France--Fiction.