This book is proof as to why some books can't be read as a stand-alone. This is book three, and I didn't read the earlier ones. I was utterly lost.
There were things about the poet Yeats, a quest, body possession, mysterious creatures from the past, hacking computers, and unknown family links. I read the entire book over the course of a few weeks because I hate leaving books unfinished.
Van Lustbader is a good writer, and that's why I stuck with it to the finish. Other than that, I can't say much else because I really didn't have a clue as to what transpired.