Oswald is caught pretending to be with Jerome 'Joker' Valeska's band of Arkham asylum nutcases and alerting Jim of their mad plans. The new mayor, archbishop and a few other notables are taken hostage and displayed to the general public at a square wearing explosive collars. Joker threatens to kill them unless his brother, gentle inventor Jeremy, and Bruce, who is interested in his energy inventions, join the hot seat. Jim convinces Bruce and he Jeremy to risk it, fitted with a jamming devise for the remote control. However Joker's thugs eliminate the police snipers before they can take him out. Furthermore, Penguin is tied up in a zeppelin to witness it dumping all over Gotham a maddening laughing gas Joker's team forces a lab to produce, with an extra for one special victim. Penguin overpowers the pilot and Jim's men Joker's, after which he chooses to fall to his death spelling sweet revenge, having arranged for a surprising successor.
—KGF Vissers