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A red-haired man named Jabez Wilson was unexpectedly given a surprisingly easy and well-paid job by the Redheads' Union, which he was told was because of the unique shade of his hair. For several weeks, Jabez Wilson came to work in a small, isolated office and spent several hours a day rewriting the Encyclopaedia Britannica. But one day, he saw an announcement that the Redheads' Union had disbanded and there was no more sinecure. Wilson asks Holmes to help him understand this strange story and find out what happened.