The double murder was pretty gruesome, but not unusual for St. Paul wallowing in the Great Depression. Grover Mudd, the cityrsquo;s premier reporter, wanted nothing more than to finger the killers and help put them away forever. But in a district that had the best politicians and police money could buy, Mudd knew that his efforts would probably lead to a big fat zero.With the reluctant help of the F.B.I. and the hesitant encouragement of his own gentle mistress, Mudd targeted the killers with his own brand of terror. It was a high-stakes, high-risk gamble for the soul of a city, a game in which Grover Mudd could end up a sainthellip; or a corpse.