About this ebook
The first sounds came at midnight, a plaintive keening from an unknown voice in the vastness of uncharted space. Within hours the whole world had heard the strange, unearthly music--and the panic had begun.
Were the sounds a plea for help? From whom? From where? Or were they a command too terrible to think about? No one knew: And in billions of earth-bound minds the horror grew...
For how could man, who had not yet claimed the moon, defy a challenge from the stars?
And hours later, to the ears of a helpless world, the second message came. . .
And Earth's days were numbered.
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About the author
Murray Leinster (1896-1975)
"Murray Leinster" was the pen name of William Fitzgerald Jenkins - an author whose career spanned the first six decades of the 20th Century. From mystery and adventure stories in the earliest years to science fiction in his later years, he worked steadily and at a highly professional level of craftsmanship longer than most writers of his generation. He won a Hugo Award in 1956 for his novella "Exploration Team," and in 1995 the Sidewise Award for Alternate History took its name from his classic story, "Sidewise in Time." His last original work appeared in 1967.
