Years ago, The Joker trained with the League of Assassins, and when he learned all he could, he slaughtered everyone. But out of the wreckage of what was left came Lady Shiva and her daughter, CASSANDRA CAIN. Learn the origin of the Absolute Universe's most formidable assassin and how her story is one that is intertwined with the world's greatest thief, Selina Kyle, Catwoman!