Hang out with the bad girls of Gotham City! Catwoman, Poison Ivy and Harley Quinn are tired of playing by other people's rules—regardless of which side of the law they're on. These tough ladies have a new agenda all their own, and they'll use any means necessary to pursue it. But can they get along and work as a team? And who will get hurt along the way?

Tommy Elliott, a.k.a. the villainous mastermind known as Hush, has escaped the confines of Batman's headquarters and is wreaking havoc throughout Gotham City under the guise of Bruce Wayne. Will the loose assemblage of Catwoman, Poison Ivy and Harley Quinn be enough to stop the madman's rampage? Or are Gotham's femmes fatales doomed to fail before they even begin?

With their uneasy alliance in place, the sirens encounter trouble in the form of the mysteriously returned Bruce Wayne. He's dazzling, he's dangerous and he's got his sights set on Harley Quinn! Has romance sparked between these two long-time enemies—or is Wayne playing a more sinister game?

Bruce Wayne has always been considered the quintessential ladies' man. But he's never faced ladies quite like this before! Has Gotham City's playboy prince finally met his match?

Harley Quinn takes center stage this issue as the girls deal with the after-effects of Hush's deadly manipulations over the last few months. Plus, don't miss a surprise guest-star!

Now that Mr. J's secret is out in the open, will the girls' reaction take them to the point of no return? And will Harley Quinn ever be the same?

Catwoman takes charge as the other Sirens fall victim to their most dangerous challenge yet!

Written by Paul Dini Art and cover by Guillem March The Sirens' dangerous alliance with The Riddler continues! They're willing to do anything to uncover the truth and protect themselves, but who is the mysterious villain targeting them all for death?

The Gotham Girls find themselves in some serious trouble when a body comes crashing through their roof. In order to solve the puzzle, they hire an old friend and renowned Edward Nigma, aka The Riddler!

The Riddler has tracked the body back to the man responsible, but now finds himself ensnared in a trap. It's up to the Sirens to come to his rescue, but can they solve the riddle in time?

Poison Ivy starts her new job at S.T.A.R. Labs, but her arrival may not sit well with some of the current staff. Meanwhile, Catwoman and Harley Quinn investigate the disappearance of multiple neighborhood pets—an investigation with an answer they may not like!

Tony Bedard takes over writing duties with "Sister Zero" Part 1. Selina and Harley desperately search for Catwoman's missing sister, who slips further and further down the path of insanity!

"Strange Fruit" part 1! The mysterious Alstairean takes control of Poison Ivy and the two of them plan to take over the world...starting with Gotham City. It's up to Harley Quinn and Catwoman to save the city—and their friend!

The plants of Robinson Park grow out of control under Poison Ivy's influence. But Catwoman and Harley Quinn arrive to trim the hedges—assuming, of course, that Poison Ivy allows them to get that far! The conclusion to "Strange Fruit!"

Talia battles Poison Ivy and Harley as Zatanna struggles with her decision to mind-wipe Selina in order to protect Batman's real identity. But who is truly casting the illusion in this plot? Find out in the finale of the RETURN OF BRUCE WAYNE tie-in!

After the events of the last arc, Zatanna approaches Catwoman with an offer she never even dreamed of. The proposal sends Selina on a spiritual journey to learn what it means to love and live and how significantly memory plays into both!

Harley Quinn back in Arkham Asylum? Can she resist The Joker's manipulations? Can Catwoman and Poison Ivy save their free-spirited friend from herself? Will she make a mistake that ends the Sirens forever? Questions, questions, questions.

Continuing from issue #21's shocking conclusion, the inmates of Arkham Asylum have taken over! With Harley Quinn in danger, can Catwoman and Poison Ivy put aside their tumultuous history and work together to save their friend?

The breakout at Arkham continues! When Batman shows up to stop the escaping villains and allies with Catwoman, battle lines are drawn between the Sirens. Will Selina stick by The Sirens? Or will she take on Harley and Ivy? And what side will Harley take when faced with a choice between her love the Joker and her best friend Ivy?

The Gotham City Sirens confront each other about their alliance and friendships as a dark secret is revealed—one that traces all the way back to the very first issue of the series! Catwoman! Harley Quinn! Poison Ivy! It all comes to a head in this series finale!