The First Book of Lankhmar by Fritz Lieber 

While tales about swords and sorcery have been around for hundreds if not thousands of years, the genre as we know it, only began to take shape about a century ago with Rober E Howard’s Conan the Barbarian. There were a few others writing in a similar style all those years ago and most of those have been forgotten. But not Fritz Leiber. His tales about two morally ambiguous thieves who lived in the city of Lankhmar remain as fresh today as they did when they were first written.