This book was a second hand pick up for me. I was surprised at how good it was. It is very well written with a good strong plot and good vamp action. Buffy takes on a very nasty female vamp created in the times of Caligula who's prevamp personality would have been twisted enough on it's own, due to what she was subjected to, without the addition of a demon spirit. This nasty number and her side kick create mayhem in Sunnydale and the Slayer and her gang come to the rescue. Good flashbacks to the vamps history and run in with Angelus. Worth a read.