Halfway to the Grave is Book #1 of the Night Huntress Series. Cat is a half vampire from a small town in Ohio and is an outcast due to her mother having her out of wedlock. Cat starts killing vampires becasue of what they did to her mother and to find and kill her father. Cat ends up trying to kill a master vampire named Bones, who ends up striking a deal with her, to train her and help her find her father. In the process they uncover a vampire feeding ring, that is kidnapping young woman and selling them for food to other vampires at a very high price.