Control Voice: (opening narration) Since the first day that Man stared up at the stars and saw other worlds there has been no more haunting question than this: What will we find there? Will there be other creatures? and Will they be like us? Or when that ancient dream comes true, will it turn into a nightmare? Will we find on some distant frozen planet an alien life of unimaginable horror?
Miss Thorsen: There have been several cases where it was not the duplicate who was destroyed.
Control Voice: (closing narration) In all the universe can there be creatures more strange than the species called Man? He creates and destroys. He fumbles and makes mistakes. But the thing which distinguishes him is his ability to learn from his mistakes.
This episode is based on the short story "Goodnight, Mr. James" by Clifford D. Simak. The story was first published in Galaxy (March, 1951)