Superman: Secret Origin (2009-2010) #5

Plot

Superman versus Metallo – for the first time! Witness the origin of one of Superman's most-feared foes, as an attack by Lex Luthor goes awry and gives birth to the evil of Metallo. Can an inexperienced Man of Steel handle a foe with a heart of Kryptonite? Meanwhile, Lois Lane and Perry White are close to revealing Luthor as the monster that he is – but are they willing to pay for that truth with their lives?