"Batman: The Long Halloween" is a graphic novel written by Jeph Loeb and illustrated by Tim Sale. Set in the early days of Batman's crime-fighting career, the story follows the Dark Knight as he investigates a mysterious killer known as Holiday, who murders people on holidays throughout the year. The narrative explores themes of duality and the impact of crime on Gotham City. The plot features several iconic characters from the Batman universe, including Harvey Dent, Catwoman, and The Joker. As Batman collaborates with Gotham City officials, he faces moral dilemmas and the complexities of trust and betrayal. The story is known for its noir style and intricate storytelling.