Justice League of America #45 (Brightest Day)

(W) James Robinson (A/CA) Mark Bagley. Written by JAMES ROBINSON Art and cover by MARK BAGLEY & ROB HUNTER A BRIGHTEST DAY tie-in! Supergirl rejoins the JLA as incredible* ancient forces of chaos are unleashed. What could posses her and Power Girl to battle to the death? And what horrors await the rest of the Justice League and Justice Society in this prologue to "The Ghosts of Earth and Space"?!