by Robert Sidney Bowen (Author)

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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