Barnabas, Quentin and the Vampire Beauty

Adele is a model who wants to be able to stay slim no matter what she eats. She finds a doctor who claims he can perform an operation that will accomplish just that.

His facilities resemble a cross between an insane asylum from many years ago with a dungeon. It turns out, of course, that he is a mad scientist who changes some people into vampires so some other people who were vampires can be human again, at least for a while.

She manages to escape to meet Barnabas and, an an unfortunately high number of the books, she becomes yet another woman who falls in love with him. The evil doctor and his cohorts are after her, though, as they want her for another operation. Both Barnabas and Quentin work together to protect Adele and to end the threat from the mad crew of doctor and friends.

It's a good story, although it looks like it's a theme that is modified slightly and repeated to many times in the paperback series.