Who Goes There?
A remote scientific research expedition at the North Pole is invaded by a monstrous alien, reawakened after lying frozen for centuries after a crash-landing.  The alien is intelligent, cunning and a shape-changer who can assume the form and personality of anything it destroys and soon it is among the men of the expedition, killing and replacing them, using its shape-changing ability to lull the scientists one by one into inattention and destruction.  The transformed alien can seemingly pass every effort at detection and the expedition seems doomed until at last the secret vulnerability of the alien is discovered and it is destroyed.Who Goes There? according to the science fiction historian Sam Moskowitz (1920-1997) had an autobiographical impetus: Campbell's mother and aunt were identical twins and enjoyed the "game" of substituting for one another in his care as an infant and young child, confusing him again and again with false identity.  It was this uncertainty, this susceptibility to masquerade and his terror at the game which, Moskowitz said, Campbell funneled into this last and greatest of his magazine pieces.  (A short novel, The Moon Is Hell, was published only in book form in the early l950's.)   Carefully and rigorously extrapolated in its portrait of the menaced expedition, the novelette is regarded as perhaps the greatest horror story to emerge form the field of science fiction.  It was the basis for one of the great early science fiction films and its excellent remake decades later.The copyright of the novelette was, typically of the time, owned by Street & Smith Publications to whose magazine Campbell had sold all of the rights.  Hawks paid Street & Smith $900 for all film rights, $500 of that was paid over "voluntarily" by Street & Smith to Campbell.  "Don't you feel cheated?" Isaac Asimov said he asked Campbell at the time of the film's successful release.  "No," Campbell said, "If it's a good film and it will get more people to read science fiction and take it seriously, then it's all a very good thing."
American Science fiction, Fiction, Horror, Mystery, Science Fiction & Fantasy
John W. Campbell, William F. Nolan
John Wood Campbell Jr. was an American science fiction writer and editor. As editor of Astounding Science Fiction from late 1937 until his death, he is generally credited with shaping the Golden Age of Science Fiction. Isaac Asimov called Campbell "the most powerful force in science fiction ever, and for the first ten years of his editorship he dominated the field completely."

As a writer, Campbell published super-science space opera under his own name and moody stories under his primary and most famous pseudonym, Don A. Stuart. Campbell also wrote under the pen names Karl Van Kampen and Arthur McCann.
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