Benson, Julie

"The origin of the new Oracle--the super-hacker who has become an invaluable ally to the Birds of Prey--is revealed... But will Oracle's connection to the mastermind known as Calculator end his relationship with Batgirl, Black Canary and the Huntress?"--Back cover.

"Barbara Gordon is no stranger to secrets. She's the daughter of GCPD Jim Gordon, the vigilante known as Batgirl and Oracle, the most powerful hacker on the planet, who until now has been kept completely hidden. Someone new has resurrected the Oracle mantle that Babs once controlled, and whoever is behind it is sending Batgirl on a wild chase all across Gotham City. By her side are two equally dangerous vigilantes--Dinah Lance, the rock star-turned-hero known as Black Canary, and Helena Bertinelli, the lethal spy codenamed the Huntress..."--Provided by publisher.