The Overland Limited, aglow with lights, stood in the Dearborn Street station in Chicago waiting for eight o'clock and the last of its fortunate passengers. Near the entrance gates, through which perspiring men and women were hurrying, stood the rear cars of the train. Within these could be seen joyous passengers locating themselves and arranging bags and parcels. In fifteen minutes the long journey of Ned Napier and his chum Alan Hope to the far southwest was to begin -- the quest of the Aztec Treasure!