Batman investigates a murder scene with Detective Harvey Bullock and concludes that the Joker, currently held at Arkham Asylum, might be behind the crime. He goes to Arkham to talk to him, only to discover that he has escaped and put a decoy in his place. Joker then attacks Barbara and her father, Commissioner James Gordon. He shoots her in the stomach, paralyzing her from the waist down, and takes Gordon to an abandoned amusement park.
