By what strange twist of Fate did the fearful menace which was to shadow every man and woman in New York City first rear its venomous head in the distant Caribbean? When terror suddenly boarded a little tramp steamer and left crimson havoc littering its narrow decks a spluttering wireless flashed the doom of every living thing aboard. Within a week, the same ghastly fate struck a gigantic new ocean liner, its luxurious cabins occupied by the elite and powerful of a dozen different nations! Death swift and terrible rode the ocean lanes. And the Spider taken for once off guard was supposedly dying in a hospital room on the very day when that terror from the seas first showed itself in all its terror above the city skyline. How can the Spider, fighting death himself, help the nation he loves in her hour of greatest need? Builders of the Black Empire is torn from the pages of the October, 1934 issue of The Spider magazine.