Ariane Dempsey is a dedicated scientist specializing in blood diseases. None of her colleagues suspect that she is also a vampire. Lately, her research has taken a very personal turn—she is trying to find a drug that will help her lover, John, whose mind has been unstable since Ariane first made him a vampire. But the drug she develops has unforeseen effects and word spreads instantly through the vampire community. Vampires from all over the globe descend upon the city in droves. They will pay anything for the drug—or they will kill for it. Ariane is about to learn that, even to those of their own kind, nothing is more dangerous than a desperate vampire.