The final season. A series of murders of crime bosses committed by a psychopath calling himself the Joker catches Batman's attention. Strangely, Barbara Gordon and Nightwing both go missing. Investigations lead Batman to Ace Chemicals, where he faces the Joker- the same man who fell into a toxic waste vat. Joker reveals he has kidnapped both Barbara and Nightwing to lure Gordon and Batman to him, having crippled Barbara (before Batman's arrival) and shoots Nightwing dead in front of Batman, just to prove that one bad day is enough to make a man lose his sanity. Batman and Joker fight atop the Ace Chemicals building, and the former gets hold of Joker's pistol. The finale ends on a cliffhanger with Gordon and the GCPD rushing to Ace Chemicals, while Batman is about to pull the trigger.
