When we last left Cat and Bones they managed to stop a war between the ghouls and vampires. A ghoul wanted Cat dead; he wanted this because she was a half breed. But now she is a full vampire but it didn't matter to this ghoul. He told people she was too powerful for someone who has not been a vampire for very long. He preaches to anyone who will listen that the ghouls need to unite against the vampires or the vampires will defeat them and turn them into slaves. They are able to defeat him with the help of the ghoul queen Marie Laveau.
Now Cat and Bones are ready for some down time and to be able to spend some time alone with each other. But that is not going to happen. Their ghost friend and roommate, Fabian, has a female ghost waiting to speak with them. It seems that Fabian's friend named Elisabeth became a ghost in 1489. She was a midwife and when the magistrate accused a mother of strangling her baby with its own cord. When Elisabeth told him he was a fool. He sent for the witch finder, Heinrich Kramer. After Elisabeth was burned at the stake, her ghost haunted Kramer until his death. Elisabeth thought that was the end but it was just a new beginning. For now Kramer has gained enough power to become flesh and bone one night of the year, Halloween. Before that night Kramer finds three women whom he wants to torture and burn. He uses his ghost form to torment and drive the women crazy then he convinces a human that the women really are witches and must be punished. The accomplice will then grab the women and get them ready for Kramer. It is up to Cat and Bones to find a way to stop this evil ghost forever. The question is how do you kill something that is already a ghost?
This is the sixth installment of Ms. Frost's Night Huntress series. Cat and Bones are the perfect team. They can kick butt with the best of em. This is the sixth book in this series but Ms. Frost keeps each book fresh and different. Cat has grown since the first book. Hopefully there will be many more adventures with Cat and Bones.
Having narrowly averted an (under)world war, Cat Crawfield wants nothing more than a little downtime with her vampire husband, Bones. Unfortunately, her gift from New Orleans' voodoo queen just keeps on giving-leading to a personal favor that sends them into battle once again, this time against a villainous spirit.