(W) Sterling Gates, Greg Rucka (A) Jamal Igle (CA) Joshua Middleton. Supergirl and Flamebird must work together to track down Karas fathers assassin Reactron! But these childhood friends find themselves at each others throats in these stories from SUPERGIRL #43 and #45-47, ACTION COMICS #881-882 and a story from SUPERMAN SECRET FILES 2009 #1.