Batman #451 1990

Batman #451, published in July 1990, presents "Judgements!", the thrilling conclusion to a two-part storyline. Batman and Commissioner Gordon pursue both the genuine Joker and an impostor, Curtis Base. In a desperate attempt to become the true Joker, the false villain plunges into a chemical vat, resulting in his demise. This issue is notable for collectors as it features the death of the second Joker, with the scene mirroring the 1989 Batman film's depiction of the Joker's origin. It also reinforces "The Killing Joke" as the Joker's definitive origin.