into Copperd's car, Beth and he in the front seat and I in the back. I told him in which direction to go.

At the outskirts of town we lost the car that was following us. I had planned this part of it perfectly. We pulled into a side road and turned off our lights. The agent went right past us.

"What is it you want of me?" Copperd said as we started up again.

"We want to have a long discussion with you about some matters on which you are an authority."

"And that's what this whole affair with me was for? So that you could get to my father!" Beth said accusingly. I saw her shoulders shake.

"Yes. Now turn off here."

We turned off the main road and followed a rutted trail onto an old farm.

The farmhouse was a wreck, but the barn still good. Our ship was in there.

The door opened as we walked toward the barn. Ristal's tall figure was framed in the doorway, and behind him stood Kresh, broad and ungainly. The others crowded up behind them.

"Good work, Marko," Ristal said. We went into the ship, which filled the whole interior of the barn.

"This is Commander Ristal, of the Venusian Intelligence," I told Copperd and Beth.

"What's your official title?" Beth asked bitterly.

"I am a special agent and language expert," I told her. Then I explained why I had brought them here.

"Our civilization is in some way far in advance of yours. As you see, we have mastered interplanetary travel. But it is essentially a peaceful civilization. Our weapons, such as we have, are of limited range and power.

"When it became known that Earth was developing monstrous weapons of aggression we realized that we must be prepared for the worst. There was only one way to discover what you already had and what you were working on. Once we arrived here we found that a man named Copperd was the prime figure in his country's atomic weapons research. It became our duty to seek him out."

"I see," Copperd grunted. "And now you expect me to reveal secrets which I am bound by oath to protect with my very life?"

"You will 

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