The Coves--San Francisco's first organized-crime gang--were Australians: men and women with criminal careers in Australia who had come to the US, mostly illegally, during the gold rush. The Coves had come not to dig for gold but to unleash a crime wave the likes of which America had never seen. Robbery, murder, arson, and extortion were the Coves' stock-in-trade, and it was said that the leader of the gang, Jim Stuart, had killed more men than any...