The Vampire’s Salvation by Martha Woods

After the discovery of the true nature of the serial killer that has been plaguing young witches, a terrifying plan of death is on the horizon for not just Amy, but paranormal kind as she knows it. The only hope that any of them have is in a last-ditch plan to use their fragile alliance to draw the killer out into the open.
Not such a small task when half of you still want to kill each other.
Compounding this she also needs to find a way to bring Vincent back from the Abyss, clear her name for murder and hopefully still have a job a week from now.
It’s been a busy few days for Amy, and it’s about to get a lot busier.