Tangier is possibly the most cosmopolitan city in the world. In native costume you'll see Berber and Rif, Arab and Blue Man, and occasionally a Senegalese from further south. In European dress you'll see Japs and Chinese, Hindus and Turks, Levantines and Filipinos, North Americans and South Americans, and, of course, even Europeans-from both sides of the Curtain. Mack Reynolds was the first author to write an original novel based upon the 1966-1969 NBC television series Star Trek. The book, Mission to Horatius (1968), was aimed at young readers. While Reynolds' fiction spans an array of science fiction elements including time travel, alien visitation, world computers, Amazonian cultures, and intergalactic spy adventures, his radical interrogation of socioeconomic systems sets him apart from other science fiction writers.