If you are writing a vampire novel, you have to deal with the fact that your protagonist is killing people and you have to find a way to make him sympathetic in spite of that fact. Having him kill people in excessively cruel and gory ways, and having him do so when he doesn't need to, out of anger and revenge, is not the way to go about that. It doesn't help that none of the other major characters is likeable or interesting either.

Despite the subtitle, the sex is not particularly erotic. It's anatomical: "He rasps his tongue from Claude's earlobe . . . over his supra clavicular nerves, around his deltoids to his intercostobrachial nerve." It's geological and geographic: "Looking over the topography of this human island, Jean-Luc searched out the broad mesas of his chest, followed the valley between to the foothills of Etienne's abdominals. Down he traveled, through sparse into thickening forest, and out onto a short, naked peninsula." Ooooooh, that's sooooo hot, I don't think!

Jack also misses the incredibly obvious fact that another character is also a vampire, and he thinks not sweating means he won't leave fingerprints (doesn't he ever watch CSI?).

I will not be looking for the "further adventures" of Jack Courbet, should there be any.