Batman at its Best,
This review is from: Batman: The Long Halloween (Kindle Edition)
The Long Halloween provides a classic "who dun' it" tale packed with a rogues gallery of Batmans foes, which ultimately deals with the in/famous (delete applicable) demise of Harvey Dent.
Any Bat-fan worth their salt knows what happens to Harv'. Despite knowing what's coming, it is still an epic read and rightly heralded as one of the top Batman tales EVER.
Some doffed-caps to The Long Halloween include-
1) Dark Knight - Christopher Nolans second Bat-film uses the Long Halloween (alongside The Killing Joke) for the core of its story.
2) Batman: Arkham City - the depiction of Catwoman is used as one of her alternate "skins".