Vampire tale with good amount of suspense

I have posted my review of this on my blog, The Itinerant Librarian. Here is a small excerpt:
"There are many layers of intrigue in this tale, including the fact that Agent Sanders is not an ordinary agent."
Click on the link to read the review: http://itinerantlibrarian.blogspot.com/2013/11/booknote-bprd-vampire.html