Don Lorenzo and Arnold Neville lead separate expeditions to the South American interior whereupon they encounter the exiled king of the underground world. But can Neville help him reclaim his throne when the arch-priestess, Alloyah, raises an army of the dead? The sequel to The Devil-Tree of El Dorado and A Queen of Atlantis, King of the Dead is a novel among the most famous lost race novels written by the British author Frank Aubrey.