In these tales from SUPERMAN #19-22, SUPERMAN ANNUAL #2 and ADVENTURES OF SUPERMAN #441-444, the mysterious Supergirl meets Superman for the first time! Plus, the Man of Steel faces Mr. Mxyzptlk, runs into the Doom Patrol and battles Metallo! And Lex Luthor is tricked into releasing criminals from the Phantom Zone-and it's up to Superman to clean up his mess.