In the City, a thriving metropolis encompassing a third of a billion souls, a man can change his world as easily as crossing the street. It is a place of a million cultures, the world in microcosm. For some it is their last hope for survival. For others it is their playground. And for others it is their hunting ground. Isaac Sarason is a talented hacker. A Doctor of Applied Network Theory, trusted employee of British Telecom-Sprint, he lives in a world which ninety percent of his fellow citizens can only imagine, and he has a problem. His health is failing, his job is on the line, his...