"Arbitrage" is a well-made and perfectly watchable financial-world thriller that ultimately doesn't amount to a hill of beans. Richard Gere turns in a solid lead performance as Robert Miller, a Wall Street wizard who, it turns out, made a big bet on a Russian copper mine that's dried up. To plug the hole, he borrows $400 mil from a fat-cat crony, finesses the book
s, and goes on with the show of success. Meantime, he cheats on his philanthropically minded wife (Susan Sarandon) with a would-be French artist who ends up dead one night under circumstances that, if made public, could imperil the life-saving acquisition of his firm by a conglomerate. Tim Roth tightens the screws as the police detective who believes Miller was involved in the death and "shouldn't get away with it just because he's on CNBC."