He was changing too, but he still knew them. The boy whose growth they had watched from the formless mists of babyhood was losing his personality, dissolving hour by hour before their very eyes. Yet sometimes he still spoke to them as he had always done, and talked of his toys and friends as if unconscious of what lay ahead. But much of the time he did not see them, or show any awareness of their presence. He no longer slept, as they were forced to do, despite their overwhelming need to waste as few as possible of these last remaining hours.

Unlike Jenny, he seemed to possess no abnormal powers over physical objects — perhaps because, being already partly grown, he had less need for them. His strangeness was entirely in his mental life, of which the dreams were now only a small part. He would stay quite still for hours on end, his eyes tightly closed, as if listening to sounds which no one else could hear. Into his mind was flooding knowledge — from somewhere or somewhen — which soon would overwhelm and destroy the half-formed creature who had been Jeffrey Angus Greggson.

And Fey would sit watching, looking up at him with tragic, puzzled eyes, wondering where her master had gone and when he would return to her. Jeff and Jenny had been the first in all the world, but soon they were no longer alone. Like an epidemic spreading swiftly from land to land, the metamorphosis infected the entire human race. It touched practically no one above the age of ten, and practically no one below that age escaped.

It was the end of civilization, the end of all that men had striven for since the beginning of time. In the space of a few days, humanity had lost its future, for the heart of any race is destroyed, and its will to survive is utterly broken, when its children are taken from it.

There was no panic, as there would have been a century before. The world was numbed, the great cities stilled and silent. Only the vital industries continued to function. It was as though the planet was in mourning, lamenting all that now could never be.

And then, as he had done once before in a now-forgotten age, Karellen spoke for the last time to mankind.

20

“My work here is nearly ended,” said Karellen’s voice from a million radios.

“At last, after a hundred years, I can tell you what it was.

“There are many things we have had to hide from you, as we hid ourselves for half our stay on Earth. Some of you, I know, thought that concealment unnecessary. You are accustomed to our presence: you can no longer imagine how your ancestors would have reacted to us. But at least you can understand the purpose of our concealment, and know that we had a reason for what we did.