Le Carré's Panama—the young country of 2.5 million souls which, on December 31, 1999, will gain full control of the Panama Canal—is a Casablanca without heroes, a hotbed of drugs, laundered money and corruption. Seldom has the weight of the global politics descended so heavily on such a tiny and unprepared nation. And seldom has the hidden eye of British Intelligence selected such an unlikely champion as Harry Pendel—a charmer, a dreamer, an evader, a fabulist and presiding g