Batgirl and the Birds of Prey #21

Full Circle part three! The Calculator has broken Blackbird and Fenice out of Arkham Asylum, putting targets on Batgirls and Huntresss backs. And while our heroes are out of the picture, Calculator holds Gotham City hostage in exchange for Oracles identity. The team will have to risk setting a trap for Calculatora dangerous move that could expose Barbara Gordons deepest secrets!