Supergirl (2011) #7
an issue of Supergirl (2011) by DC Comics
Issue description
Writer:
Michael Green
Artist:
Mahmud Asrar
It's Supergirl versus the Worldkillers! But who are they, and where did they come from? What is their connection to Krypton? More important, can the Girl of Steel stop them before they make good on their names and destroy Earth?