A full-length adventure set in the antediluvian world of ATLANTIS! The fortress-island of Sargon’s Spur dominates the southern edge of the Sargasso Sea. But all is not well on the scholarly retreat; the great pinnacle lies under siege by a Makara horde while beneath the waves something inconceivably ancient and evil stirs from its timeless sleep. Can the heroes discover the secret of Sargon's Spur, and more importantly, can they survive to tell the tale?