Great book! I read the entire thing, and I have to say it remains very true to the spirit of Dark Shadows, tells a great story, and also is written in such a way that you can actually envision the DS actors speaking the very same lines. It's rare when I read a work that allows me to actually hear the voices of the actors portrayed in it, but I could hear David Selby, Grayson Hall, et al throughout the entire book...excellent stuff!
It's truly a shame that the DS range didn't continue, as you've captured the feel very well!