In every sector, there's an outlier. In the pharmaceutical industry, it’s Merck. In discount retail, it's Family Dollar. It used to be Wrigley in candy and Maytag in appliances. Other superstars have been hidden in plain sight, like Heartland Express in trucking or Linear Technology in semiconductors. How do these exceptional companies deliver superior performance over the long run despite facing the same constraints as competitors? What are they doing differently? What can we learn from them?