The Birds of Prey are back to business as they infiltrate The Ninth Day, a mysterious corporation the Birds believe has kidnapped people -- including Amazons that have gone missing. When their spy on the inside, an undercover Cassandra Cain, breaks contact, it'll be up to Oracle, Black Canary, Big Barda, Megaera, and newcomers Grace Choi and Onyx to bust her out. Don't miss the start of this thrilling new arc, where the fate of the Amazons rests in the hands of a silent warrior!