Unknown to Lois, an accident transports her to a parallel world where she sees Superman die in a trap set by Lex Luthor.; Lois learns the truth about Strong Bear.; A science experiment gone wrong releases a creature from another dimension that is infatuated with Lois and jealously fights Superman.; Lois and Jimmy go to Herko's dimension to try to stop him from waiting for Lois. She convinces Jimmy to court Herko's neighbor Zagga to make him jealous.; While visiting Superman's Fortress, Lois and Lana find a picture of Superman proposing to a girl who looks like both of them. He tells them the story, which they have forgotten, of how they were temporarily merged into one girl a few years earlier.; Dr. Drolic has a machine that will find the greatest unknown person in a given category. Lois uses it to find the greatest unknown super-person which leads her to Strong Bear.; The Flash rescues his girlfriend Joan from the Thorn, who reverts back to her "good" personality as the Rose. Green Lantern takes the Rose to Transformation Island, where the Amazons will rid her of the Thorn personality.