At an army base in Utah, Major Rick Graves worries about an upcoming nuclear test. Graves's friend, Charles Spence, believes that a three-month-old crater, supposedly caused by a meteor, was in reality created by an alien spaceship. He also believes that Carl Wyeth, an engineer on the base, has met with the aliens. Spence has Graves call in David Vincent to investigate. Meanwhile, Graves voices his fears to his superior, General Beaumont. But Beaumont is colluding with the aliens, who have plans to explode an anti-matter bomb that will kill millions of people.
Did You Know?
William Windom starred in the similarly titled Star Trek TOS show "The DOOMSDAY Machine," otherwise completely unrelated. See more
In the gun battle toward the end, the last alien to be killed falls and burns up. But the final burn mark is already clearly visible on the ground the moment the alien starts to burn. See more
David Vincent has received an urgent call from a man he'd never met, to come to a motel he'd never heard of, in a desert he'd never seen. But he came, because the message spoke of alien Invaders. The man he'd never met had disappeared; the motel he'd never heard of seemed menacing; but the desert he'd never seen promised him an answer.