The Space Vampires

When Captain Carlsen entered the vast derelict spaceship, he was stunned by its awesome splendor--and shaken by the discovery of its immobilized humanoid passengers. Later, after three of those strange aliens had been transported to Earth, his foreboding was more than justified. The creatures were energy vampires whose seductive embraces were total, whose lust for vitality was boundless. As they took over the willing bodies of their victims and sexual murders spread terror throughout the land, Carlsen worked toward their destruction--even though he was erotically drawn to the most beautiful vampire of all!