The mark and the void
(Book)

"While marooned at his banking job in the bewilderingly damp and insular realm known as Ireland, Claude Martingale is approached by a down-on-his-luck author, Paul, looking for his next great subject. Claude finds that his life gets steadily more exciting under Paul's fictionalizing influence; he even falls in love with a beautiful waitress. But Paul's plan is not what it seems -- and neither is Claude's employer, the Investment Bank of Torabundo, which swells through dodgy takeovers and derivatives trading until -- well, you can probably guess how that shakes out"--Amazon.com.