Batman: The Dark Knight Returns #[nn]

This seminal 2003 collection presents Frank Miller's landmark four-issue miniseries that redefined Batman for a modern era. Set in a dystopian future, it follows an aging Bruce Wayne as he dons the cape and cowl once more to confront a new generation of criminals, including a twisted version of his old foe the Joker. The story's gritty artwork and mature themes established a darker tone that would influence the character for decades to come.