At age 50 John Lefebvre hit the digital motherlode. Neteller, a tiny Canadian internet start-up that processed payments between players and online gambling arenas, rocketed into the stock market. Neteller had been a cowboy operation, narrowly averting disaster in creative ways. Co-founder Lefebvre, a gregarious hippie lawyer from Calgary, Alberta, had toked his way through his practice for decades, aspiring all the while to be a musician. With the profit from Neteller and his stock holdings, Lefebvre became a multi-millionaire. Then the FBI came knocking...