Batman and The Joker have been archenemies for decades--but when a mysterious and violent new threat emerges, they're going to have to form the most unlikely alliance of all time! Batman & The Joker: The Deadly Duo is the dark and brutal Gotham opus from comics legend Marc Silvestri, and to help promote the September release of the hardcover collection, DC is offering a promotional version of Batman & The Joker: The Deadly Duo #1, available on Batman Day 2023!