One Grave at a Time by Jeaniene Frost — book slip

Cat Crawfield, a half-vampire, and her vampire husband Bones are thrust into a new battle against a malevolent spirit, Heinrich Kramer, a former witch hunter who returns every All Hallows Eve to torture and burn women alive.

With the help of a gift from a voodoo queen, Cat and Bones must find a way to stop Kramer permanently.

But as they delve deeper into the supernatural conflict, they risk their lives and their love in a quest that could lead them to their own graves.

For fans of Kim Harrison and Christine Feehan.