Written by Murray Leinster (a pseudonym of William Fitzgerald Jenkins's) This World Is Taboo was first published as "Pariah Planet" in Amazing Stories, July 1961, and is the second volume in the Med Services series. Leinster wrote more than 1500 stories and articles during his career and is credited with first using the concept of parallel universes in his fiction.

Author Biography

Murray Leinster (1896 - 1975) was a nom de plume of William Fitzgerald Jenkins, an American writer of science fiction and alternate history literature. He wrote and published more than 1,500 short stories and articles, 14 movie scripts and hundreds of radio scripts and television plays. He began his career as a freelance writer before World War I; he was two months short of his 20th birthday when his first story, "The Foreigner," appeared in the May 1916 issue of H. L. Mencken's literary magazine The Smart Set. Over the next three years, Leinster published ten more stories in the magazine. During World War I, Leinster served with the Committee of Public Information and the United States Army (1917-1918). During and after the war, he began appearing in pulp magazines like Argosy, Snappy Stories and Breezy Stories. He continued to appear regularly in Argosy into the 1950s. When the pulp magazines began to diversify into particular genres in the 1920s, Leinster followed suit, selling jungle stories to Danger Trails, westerns to West and Cowboy Stories, detective stories to Black Mask and Mystery Stories, horror stories to Weird Tales and even romance stories to Love Story Magazine under the pen name Louisa Carter Lee.