 Rosemary Guiley describes" The Space Vampires" as being "inspired" by the Cthulhu mythos.In the late twenty-first century, far out in a nearby asteroid belt, a gigantic derelict castle-like alien spacecraft is discovered by the space exploration vehicle "Hermes," commanded by Captain Olof Carlsen.Investigating the spacecraft's interior, the astronauts first discover the desiccated corpses of giant bat-like creatures, then three glass coffins containing three immobilised humanoids – two male and one female – preserved in a state of suspended animation.