The Outer Limits1963

The Glass Hand:
You come from the Earth one thousand years in the future. The Kyben came from the stars, and Man had no defense against them. They conquered the planet Earth in a month. But before they could slaughter the millions of humans left, overnight without warning, without explanation, every man, woman and child of Earth vanished. You were the only one left, Mr. Trent. The glass hand, the vanished earthmen have given you, to help you. They called you, "the last hope of humanity." The medallion you stole let you escape into Now, The Present, Today. And now you are among all the men of Earth who are alive today. But the Kyben came into possession of three parts of your hand, the computer that could answer all the questions. You have to get those three lobes to me, the computer brain, and find out what the alien Kyben really want from you, why you were the only man left alive one thousand years in the future, on the planet Earth. You must destroy the time mirror, to keep them from sending more Kyben through to the present, to close that doorway completely.