Gotham Girls (Gotham Girls #1)

Unable to resist a golden opportunity to fund her beloved lion preserve, Catwoman heists a vial of a mysterious formula for a shady company - only to discover she's actually working for Poison Ivy and mallet-wielding sidekick Harley Quinn. That sets off an every-villain-for-herself chase across Gotham's rooftops - and attracts the attention of both Batgirl and officer Renée Montoya, who reluctantly team up to join in the fray!