G. T. Fleming-Roberts
Published in the 12/1938 issue of Secret Agent X.
"Ten thousand years ago it had been written in brass that the Yezidee would overrun the world with blood. And now Erlika, daughter of Satan, had smuggled in the Yezidee to form an unholy alliance with the American underworld. And Secret Agent X - man of a thousand faces - found himself stalemated by ageless magic and barbaric cruelty."