See full review for One Grave at a Time at: http://toomanybooksnotenoughshelves.w... 
 Cat and Bones just can't catch a break. They've faced a lot of trouble over the last few years between a crazy vampire, a rebel raising ghoul, and the tumults of their relationship, they get to face one more curve ball this time. Their ghost friend Fabian introduces them to another ghost named Elisabeth who has a request for the couple. She's been hunting a guy by the name of the Inquisitor for centuries. He was the reason behind her death and even with his own death he hasn't stopped. Every Halloween he gets a human to kidnap three women who he believes to be witches, and he burns them at the stake. 
 Cat and Bones don't like the sound of this guy and promise to help. They start by employing a medium by the name of Taylor - a very fresh character for this series - and open the gates to allow the Inquisitor through. He doesn't like being summoned, especially by a woman and because it's Cat, she doesn't keep her mouth shut either by telling him that she has witch power in her veins. Stupid move, Cat, real stupid. Because of this, he makes it his mission to hunt her down and attack her with every opportunity he gets. The first time they face off he is taken back by her power to raise the Remnants, but like with Cat's other borrowed powers, it does eventually fade. 
 So now they need to come up with a new plan to take down this evil spirited ghost and... well, who you gonna call? The Ghostbusters, of course! Well, not really, but close enough. Add in the new head of Cat's old team who seems to have a vendetta not only against vampire but against Cat as well, and things get a little bit more intense than anyone bargained for.