SilverviewThe much anticipated publication of John le Carre's last complete novel now in paperback Julian Lawndsley has renounced his high flying job in the City for a simpler life running a bookshop in a small English seaside town. But after only a couple of months into his new career, Edward, a Polish emigre, shows up at his door with a very keen interest in Julian's new enterprise and a lot of knowledge about his family history. And when a letter turns up at