In the middle 21st century, when man can reach the edge of the solar system in a few months, a group of astronauts discovers a huge spaceship - a derelict. Led by Olaf Carlsen, the astronauts brave the ship's cavernous interior and discover that it contains human beings who appear to be dead. Taking several back to Earth, Carlsen soon realizes that the humans are actually alien vampires - beings who suck the life forces out of their victims, and even possess some humans as well. Teaming up with Dr. Hans Fallada, a criminologist with an interest in the science behind vampires, Carlsen hunts an escaped vampire across England, struggling to uncover the truth before the rest of their kind can be brought to Earth by oblivious atronauts.
I've always wondered what sort of fame "Vampires" if it hadn't been adapted by Hollywood for the horrible movie "Lifeforce". I think people flock to the book because they're fascinated by the idea of life-sucking aliens, and figure that the book must be way-better than the movie. Viewers must have thought that Tobe Hooper simply junked a perfectly acceptable plotline that would have worked just fine on the screen. The problem is that the book is as weak as the movie, just for different reasons - many of them are painfully obvious. The writing is pedestrian, and some plot points are just clumsy. (The alien vampire is brought to life by an unwitting reporter brought to the spacelab by Carlsen; the reporter is the son of an old romantic interest - a plot point that seems unnecessary and is never explored again. It's a minor problem, but typical of the story.) Worse, Wilson goes out of his way to take the edge out of his edgy premise. Vampires? Perfectly rational - if aberrant - outgrowths of natural phenomenon. Contemporary science of the era of the story can not only detect the presence of life forces, but quantify it as well. Fallada and Carlsen are surprisingly calm in light of the threat of space vampires. Once the vampires escape their earthly confinement, Fallada & Carlsen jet off to Europe in search of a reclusive expert on vampires - the epidemic of life-sucking zombies not only fails to materialize, but the threat remains missing as well. When Carlsen finally corners the space vampire, he gets easy answers to his questions about the origin of the space vampires - there's no emotion, no tension. It's almost as if the book had been robbed of its own life forces.