In the roaring 1920s, Arkham City displayed an increasingly thriving scene, but in the darkest den beyond jazz music and bouquet of moonshine’s reach, unnamable evil began secretly. Nightmare-like shadows lurked around every corner, and strange noises echoed from the asylum at night; pagan rituals and witch gatherings frequently arose like never before, behind all these oddities seemed to hide appalling secrets. You, an investigator, have accepted a mysterious commission to explore the truth. May you succeed in stopping the conspiracy in the darkness on the edge of town, ere the Elder Ones’ total awakening... or your sanity’s complete collapse.