Originally published in Shadow Magazine 7/1/34. From the back cover:
Meldon Fallow, inventor, had created an extraordinary new type of engine fuel, whose secret formula would mean undreamed-of power and wealth to its possessor. But the secret was not for sale – not even for five million dollars!
Meanwhile, hard, cruel eyes were watching Fallow and his associates – the all-seeing eyes of a sinister genius who owed that murder would achieve what money could not. And finally death struck: grisly death, so brutal it seemed could not have been inflicted by human hands.
Such was the work of Charg, the power-crazed master of mayhem, whom no man alive had ever seen, much less captured. Who could withstand his deadly intent? What crime-fighter was himself so cunning, so stealthy, so steeped in the ways of darkness that he could penetrate the hellish sanctum of Charg? Only one – The Shadow!