First Edition. Howard Chandler Christy dustjacket art and illustrations. Hubin listed novel of international intrigue. "A secret meeting of the great crowned heads of Europe aiming at the invasion of England, and the efforts of the Austrian secret service to regain important papers relating to the project." Near Fine in Very Good dustjacket, shallow chips at top spine end and front flap corners, small chip at mid-upper spine, nickel sized chip at top rear panel.