_Condemned without trial for his refusal to open fire on an alien space-craft, Ralph Langford had to be free to investigate the strange menace from beyond the stars! For if the alien were an enemy, then it would be the most terrible enemy men had ever encountered._ [Transcriber's Note: This etext was produced from Future combined with Science Fiction Stories May-June 1950. Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.]…
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