Part 3
"No, doctor." Ron forced himself to a sitting position. "Not with the Scholar alive and thriving, growing stronger and more intelligent with every passing year. It'll be _his_ Earth when I return...."
The doctor stared at the night sky before answering.
"No, Ron. He'll never live to see it. I knew that when I selected _your_ body to house his mind...."
"What do you mean?"
"I chose you for a reason, Ron. A vital reason. When you came to my office on your return from Andromeda, I discovered something about you which made up my mind. An ailment without a name or a symptom, found only rarely in the bodies of a few space travelers. You had it, Ron, and in a year or two, it would have struck you down with the savagery and surprise of lightning.
"It was then that I agreed to the Scholar's plan to exchange bodies. Agreed to it on my own terms, with the body of Ron Carver...."
"Then I'll die!" Ron said.
"No, Ron. You will live. It's the Scholar who has made the bad bargain...."
In the distance, the lights of the Winnipeg spaceport blinked a welcome.