Gotham by Gaslight: The Kryptonian Age by Andy Diggle and Leandro Fernandez expands the mysterious and gothic world created by Brian Augustyn and Mike Mignola beyond the confines of Gotham City, introducing DC's greatest heroes as they come together for the first time to form a 19th-century Justice League. As they unite against the greatest threat the world has ever known, they will learn their world's secret Kryptonian history.