Batman & The Joker: The Deadly Duo #6

Bill Sienkiewicz Joker Variant Cover

Batman and the Joker confront Amanda Simms to free her captives Harley Quinn and James Gordon. Amanda has been revived from death by her father's genetic experiments, but blames her father for her zombie-like state, and plans to take revenge on everyone she holds responsible for her death, including Batman and the Joker. But is the Joker secretly working with Amanda?