Eighth Grave After Dark. Number 8 in series

Charley Davidson has enough to be getting on with. She is, after all, incredibly pregnant and feeling like she could pop at any moment. But, just her luck, twelve deadly beasts from hell have chosen this time to escape, and they've made Charley their target. She takes refuge at the only place they can't get to her: the grounds of an abandoned convent. Before long, Charley also has a new case to hold her attention: the decades-old murder of a newly-vowed nun she keeps seeing in the shadows of the convent.
Add to that the still unsolved murder of her father, the strange behavior of her husband, and Charley's tendency to attract the, shall we say, undead, and she has her hands full .