Batman, Detective Comics. Vol. 2. Gotham nocturne

"Azmer the demon begins to rally the likes of the Two-Face and Mister Freeze in his efforts to defeat the Dark Detective. Meanwhile, the young Orgham heir Arzen meets Bruce Wayne for the first time, and Bruce see potential in the boy. Dualism takes center stage in this arc, and not only is nothing as it seems, but it's always, always worse."--