Plot
After her birthday and Guilding Day, Supergirl goes back to Earth and scours the planet for her father's killer—Reactron. But now that all Kryptonians are banned from the planet, she’s gone from friend to fugitive overnight. With Earth watched over by Squad K—a government-sponsored, anti-Kryptonian unit—Supergirl is on the run. When Reactron and his joins the Squad, the Girl of Steel finds her target coming at her! In order to bring him to justice, Supergirl has no choice but teaming up with her ex-friend Thara Ak-Var, Flamebird. Will they be able to work together?
Supergirl (Volume 5) #43 (Guilding Day)
Action Comics #881 (The Hunt for Reactron, Part One)
Supergirl (Volume 5) #45 (The Hunt for Reactron, Part Two)
Action Comics #882 (The Hunt for Reactron, Part Three)
Supergirl (Volume 5) #46 (The Hunt for Reactron, Conclusion)
Supergirl (Volume 5) #47 (Pain and Responsibility)
Superman: Secret Files 2009 #1 (Blood-Sisters: A Tale of Old Krypton)