Robert Sidney Bowen Bücher

Six men-o’-war sunk by Black submarines… Newport News Naval Base destroyed in broad daylight by invisible bomber… Dusty studied this report grimly. Had the enemy developed a new weapon—a ship that could fight under water and in the air as well? Grimly he determined to find out—in Black dynamite skies!

Thick, deadly, that curtain of purple gas stretched along our border from Maine to the Great Lakes. What did it hide? What gigantic war scheme was the enemy preparing behind it? The Fate of America depended upon knowing these answers in time—and grimly Ayres vowed to find out, flying a one-man patrol against the greatest military coup ever planned!

When Dusty heard about America's new invention, the X-Rayoscope, by which the human eye could penetrate night, fog and clouds for a distance of two hundred miles, he thought victory was at hand. With such a machine to spy on the enemy, the war would soon be over. But he didn't know about the doom even then speeding through invisible skies, had not yet heard of the green thunderbolt!

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