Eighth Grave After Dark

"Charley Davidson has enough going on without having to worry about twelve hellhounds hot on her trail. 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 onto our plane, and they've made Charley their target. And so she takes refuge at the only place she thinks they can't get to her: the grounds of an abandoned convent.