So what's a nice Jewish boy like Ira Goldstein doing managing a flashy Puerto Rican boxer named Jsus? What is his mother doing in the arms of Solomon, the scrap-metal king of Detroit? And what, for toppers, is J. Edgar Hoover doing in a chair suspended over a boxing ring in Havana, Cuba? Charge it all to zipthat elusive form of human energy that makes hearts leap, cash flow, ideologies tremble, the world go round. Ira could sure use some zip, so he tries to find it.