of Batman's real identity, and Ivy and Harley team up with Talia and Zatanna to rescue her. When they defeated the villain, Zatanna and Talia realize that Catwoman is in great risk because of her knowledge, and Talia convinces Zatanna to use her magic to erase it. Talia manages to distract Harley and Ivy as Zatanna scans Selina's memories, but she eventually realizes that Talia only wants to erase Selina's memory of Batman's identity because she cannot bear that another woman whom Batman also loves has this information. Zatanna leaves Selina's memories untouched, then confronts Talia and tells her that she now knows that she set up everything. They briefly fight, but Talia decides she does not want to fight anymore and fires at Selina instead, prompting Zatanna to rescue her. Zatanna asks forgiveness from Selina and still offers her to remove her memories of Batman to ease her burden, but she turns the offer down. "Division" Shortly thereafter all three women feel spurned and neglected by their men of choice, and Harley seeks out Catwoman to console her about her loving Batman, making an equivalence to her feelings for Joker, but Catwoman's discontent stirs anger in Harley, who goes to seek out vengeance on her ex-boyfriend. Harley betrays her two friends and breaks into Arkham with the goal of killing the Joker for abusing her as often as he did. Harley ultimately chooses to instead release Joker from his cell, and together the two orchestrate a violent takeover of the facility that results in most of the guards and staff members either being killed or taken hostage by the inmates. Harley and the Joker are eventually defeated by Batman and Catwoman, and Harley is last seen being wheeled away while bound in a straitjacket and muzzle. Shortly after this, Poison Ivy breaks into Harley's cell and attempts to kill her for her betrayal, but instead pities her and offers to free her if she helps kill Catwoman, who had left both of her fellow Sirens behind in Arkham to be captured. Harley and Ivy subsequently escape and try to exact revenge on Selina. A massive fight ensues, which ends with Catwoman revealing that since the group first came together, she had been using her connections with Batman to keep Harley and Ivy from being arrested and that she saw good in them and only wanted to help. Harley and