Long before Indiana Jones cracked his whip, the adventure of fedora-wearing Malcolm McDougall thrilled readers with his story of lost treasure, poisonous blowpipes, fierce gunfights, and romance. After an ancient document revealsthe location of a vast fortune of Incan gold hidden from Spanish conquistadors, McDougall leads a small party in search of the treasure. Encountering an archaeologist investigating strange tunnels full of mummies, and with thekey to the mystery in their grasps, the party finds that it has been followed by a rival fortune-hunter and his gang of gunmen.