Superman #669

Who is "The Third Kryptonian"? Superman and Batman team up to deliver the answer in Part 1 of a 3-part story that culminates in the SUPERMAN ANNUAL! A year ago, Superman learned of another Kryptonian on Earth. Now the hunt goes into overdrive, as the Metropolis Marvel and the Dark Knight Detective's search takes them from China to Gotham City to California and more. Plus, important developments for Superman's foster-son Chris Kent, who also gets to meet Robin the Boy Wonder! .

Image: Superman #669 - DC Comics

Superman #669