Superman has been told there is another Kryptonian other than him, Supergirl and Power Girl living on Earth. Who is that person? How long he or she has been hiding? And why? Is that person friend or foe? Superman and Batman are determined to find the missing Kryptonian, but their search draws the attention of someone who has sworn to kill all Kryptonians... and is willing to annihilate Earth if that is what it takes.
- Action Comics #847 (Intermezzo)
- Superman #668 (The Third Kryptonian, Part One: The Hunt)
- Superman #669 (The Third Kryptonian, Part Two: The Escape)
- Superman #670 (The Third Kryptonian, Finale: The Stand)
- Superman Annual #13 (The Best Day)
- No special notes.