As the Klondike gold rush peaked in spring 1898, adventurers and gamblers rubbed shoulders with town-builders and gold-panners in Skagway, Alaska. The flow of riches lured confidence men, too--among them Jefferson Randolph "Soapy" Smith (1860-98), who with an entourage of "bunco-men" conned and robbed the stampeders. Soapy, though, a common enough criminal, would go down in legend as the Robin Hood of Alaska, the "uncrowned king of Skagway," remembered...