WRITTEN BY JEPH LOEB;ART AND COVER BY ED MCGUINNESS AND CAM SMITH Part 1 of a 2-part World's Finest crossover, continuing in DETECTIVE COMICS #756 this month. Lois seeks out Batman, the one person who can retrieve President Luthor's Kryptonite ring. But Lois and the Dark Knight have an obstacle in their way ? the Man of Steel!