The 82-year-old Portuguese Nobel winner crafts his latest novel, The Double, around ''this extraordinary, singular, astonishing, and never-before-seen case of the duplicate man.'' One lonely night, depressed history teacher Tertuliano Maximo Afonso pops a stupid B movie into the VCR and is shaken to find his exact physical double identical, he later learns, down to the fingerprint playing the bit part of a hotel clerk. Don't be daunted by JoséSaramago's famous 18-page paragraphs and page-long sentences. Oh, all right, be a little daunted. But that garrulous omniscient narrator droll, delightful, persnickety, philosophical, always second-guessing actually steals the book from the story's two carbon-copy protagonists. Saramago might've dug deeper into the premise than he ultimately does, but a last little twist, delivered in a final paragraph of a mere two pages, is delicious.