A Pakistani-born physician, Sohrab Khan obtained his medical training in the United States, specializing in cardiology. In the 1970's, he served as a fellow at Baylor University Medical Center Hospital in Dallas, Texas, returning to his native city of Lahore in 1981. Whatever homicidal fantasies were cultivated in his mind, Khan managed to conceal them through the fall of 1986, until, at forty-two, he lapsed into a month-long homicidal binge and slaughtered thirteen victims . Four of those were gunned down on the evening of November 13, as Khan cruised Mall Road on a motorcycle, randomly blasting a dogcatcher, a night watchman, a laborer, and an unidentified transient. A week later, he shot two more night watchmen and a rickshaw driver, dumping their bodies in a canal. Another of his victims was a waiter, shot -- Khan said -- because he moved too slowly with the doctor's order. Arrested on December 11, 1986, Khan was charged with thirteen murders and quickly obliged police with confessions in nine of the cases. A search of his home turned up a cache of unlicensed weapons, along with several false passports and sketches of various murder scenes, drawn from memory. Dubbing Khan "a maniac or saboteur who killed for the fun of it," Punjab Province Police Chief Sabahuddin Jami declared, "He is a beast, not a human being."