Taking place during Batman's early days of crime fighting, The Long Halloween tells the story of a mysterious killer named Holiday, who murders people on holidays, one each month. Working with District Attorney Harvey Dent and Lieutenant James Gordon, Batman races against the calendar as he tries to discover who Holiday is before he claims his next victim each month. The story also ties into the events that transform Harvey Dent into Batman's deadly enemy, Two-Face. (from Wikipedia)
Great idea! The Long Halloween is one of the greatest Batman comics of all time.
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