Authors: D. C. Fontana
And on occasion, in various parts of the world, there were reports of a strangely formal, attractive blue-eyed man who came and went and did some things that changed lives, or prolonged some, or made the crops better, or averted a plague. He was always accompanied by a tall, rangy man with a warm, wide grin and twinkling eyes who had a magical knack for things mechanical.
The world went on its way as it always had—but somehow it seemed things were a little better than they had been before.