"Through a Glass Deadly" ties into Catwoman (Vol 3) #77-78.
*Trapped between the warring tribes led by The Joker and Lex Luthor, Catwoman is forced to make a deadly decision that will change several lives forever. The hostilities on Hell Planet are about to reach a boiling point, and nobody is a sure bet to make it out alive. And that's before things get worse with the unexpected arrival of a new group looking to exterminate every villain in sight. *Source: dccomics.com