An offhand remark by Mayor Hill on television spurs the Joker into sneaking onto his estate disguised as a clown at the birthday party for Hill’s son, Jordan. Joker plants a bomb, but Bruce Wayne, who is attending the party, manages to defuse it. However, Jordan, who is angry at his father, runs away hiding […]

The Joker’s plot to send all of Gotham into insanity with Joker-gas from a garbage scow leads to a battle on the water.