Have I read this? Would I remember it?

Reading Vittorio the vampire by Anne Rice. I picked it up at the markets and had to buy it to get away from the nice-but-too-chatty marketer. I don't think I've read it before, but perhaps I wouldn't remember because it has very little substance. It is the slightly flowery language and it is the tapestry of the historical world. It is well written, but seems to lack something. I wonder if I look on my bookshelf if there is another copy or was it so nebulous I wouldn't have kept it? I'd like to think that my memory would at least retain books, but alas, lately.... I do tend to remember covers, but this cover is remarkably bad so I might have wiped it from my mind. Will I ever know and does it matter? Hanging out for the next installment of Game of Thrones.