SUPERGIRL welcomes aboard writer Nick Spencer (JIMMY OLSEN, T.H.U.N.D.E.R. AGENTS, Morning Glories) and artist Bernard Chang (WONDER WOMAN, SUPERMAN) for a Girl of Steel story unlike any other! Someone is trying to kill the young heroes of the DC Universe! Who is this villain, and how can Supergirl stop him? Maybe her friends can help - namely, Batgirl, Blue Beetle, Miss Martian, Static and…Robin?! Buckle up, folks, because this one puts the pedal to the metal on page one and doesn't let up for a second!