Deliberately scattered across the globe to follow leads both real and false, the Birds of Prey are more vulnerable than ever before. And there's a new team of villains waiting in the shadows, fashioned specifically to take out the Birds: Oracle, Batgirl, Black Canary, Barda, and Sin/Megaera. As the strongest among them falls, a mission for answers becomes a fight for survival. The Birds investigate the disappearance of one of their own, hoping to find both their missing comrade and the truth about these mysterious villains. Can the Birds of Prey survive what's coming, or will the Shadow Army clip their wings for good? From Eisner Award-winning writer Kelly Thompson (Absolute Wonder Woman) and sensational artists Sami Basri (Harley Quinn) and Vicente Cifuentes (Batgirl), Birds of Prey Vol. 4: On the Run collects Birds of Prey #20-28.