Mr. Oz at last steps from the shadows-but the truth of his identity will rock the Last Son of Krypton to his core. And if Superman refuses to join Mr. Oz's cause, maybe Superboy will! Then, Superman and Booster Gold travel back in time to verify the claims that Kal-El's father survived the destruction of Krypton. What they find, though, is a vastly different world than history has shown.
Collects ACTION COMICS #985-999.