It looked just like any other deserted island. But hidden under its tropical sands was a monstrous slave empire, a vast underground network of death pits, giant carnivorous crabs and prehistoric beasts, ruled by the blood-crazed Count Ramadanoff. Blasting their way into this nightmare of horror, Doc Savage and "the fabulous five" embark on their most daring adventure.

First published in Doc Savage Magazine # 34 December 1935 - written by Lester Dent.