In these stories from ACTION COMICS #957-966 and JUSTICE LEAGUE #52, collected for the first time in hardcover, Superman returns to Metropolis just in time to meet the city's newest protector: Lex Luthor. But the dueling titans soon meet someone unexpected: Clark Kent! Can these enemies put aside their differences and face the common threat of Doomsday, as Jimmy Olsen tries to uncover the truth of Clark Kent's identity.