I had to look up Lucy Westenra. I guess I should read Dracula some day
As far as Star Trek vampire novels go, it was an interesting take, although Bloodthirst will always top my list of Star Trek vampire stuff. It beats out The black shore and TOS episode The Man Trap, since actual vampires beat psionic and salt vampires any day
(It is actually a very good book, and one of the most memorable TOS books I've read).