Air Force Major Jeff Cummings (Thompson) begins an investigation as the local deaths continue, interviewing various townsfolk, while looking for anything unusual. Cummings becomes suspicious of Professor R. E. Walgate (Reeves), a retired British scientist living near the airbase; Walgate is in the process of writing another book about his ongoing experiments with telekinesis, this time as it applies to thought projection. Major Cummings' suspicion of Walgate is later proved to be correct. The scientist finally admits he has not only succeeded in developing his mental ability, but in the process created a living thought projection. Unknown to Professor Walgate, the nuclear power radar experiments underway at the nearby U. S. airbase have greatly enhanced his mental abilities to the point that, through him, his living thought projection has become a malevolent and invisible new life form. It escaped from Walgate's laboratory and is now attacking humans as a means of replicating physical, though still invisible, new versions of itself, all of which are now feeding on the base's nuclear-generated power.