Nessa Donnelly and her brother were Pinkerton agents during the Civil War. After her brother was murdered by the Knights of the Golden Circle, she took his identity and pursued them. Fifteen years later, she's still living under her brother's name, looking for the killers. When Lexington prostitute Belle Brezing comes to her for help, Nessa follows a string of bodies that lead her to the Knights... but if she's not careful, she could be their next trophy.
This revision (the original was published by Pill Hill Press) reveals more details about Nessa Donnelly's background. It also contains a section of historical notes after the story.
If you didn't catch the novel in its first run, grab it now. The sequel, Concealed in Ash, will be out later this year.