Eric Ambler's novelistic career falls into two halves. In the first half belong the works he published between 1935 1940. These include the highly acclaimed "Epitaph for a Spy" (1938) and "The Mask of Dimitrios" (1939), both of which were made into successful films in 1944. The intrigue books of this period unfold in interwar Europe, a bitten-up, anxious place reeling between the extremes of fascism and Soviet communism. To reflect changes in the postwar world, Ambler set his later books in third-world countries where first-world financing collides with unstable, often revolutionary, politics all within the shadow of large multinational corporations. These powerful firms with connections in high places take the same liberties as big governments have always done in works like "Dr. Frigo" (1974), the only Ambler book set in Latin America, and the best-selling "The Care of Time "(1981)."