Never had the mind of man conceived so horrible a doom as was reaching for Earth. Never had a greater need for Earth's valiant champions been needed. And yet the only ones who could fight the menace--were five futile humans, prisoners on another world. [Transcriber's Note: This etext was produced from Planet Stories Fall 1945. Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.]…
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