In Baltimore, crime is hell. And in Hell crime is far worse. 
When a soul goes missing in Charm City, the Devil wants his due and Negral, forgotten god and Hell's Detective, comes looking. When his own methods fail, he calls on Detective Bianca Jones despite the animosity between her and his boss. Together they search for the soul. In the process, Negral unwittingly gains a disciple and is forgotten no longer. He is forced to choose between honor and power. 
When an old enemy manages to make Negral disappear into the inside of a locked room mystery, the pair must work the case from the inside and out before the forgotten god fades away to oblivion.