Nolan and David S. Goyer have named Loeb and Sale's The Long Halloween as a source for The Dark Knight: Batman, Gordon and Harvey Dent working together against the mob, and Dent's fall into Two-Face as the cost of that alliance.
Comic· 1996· Crime
Batman: The Long Halloween
by Jeph Loeb
Batman: The Long Halloween: 1 recorded work traces back to it.
What Batman: The Long Halloween influenced
Works that record this one as a source, with the evidence a contributor gave.