"They won't come back. They could have passed any test except the fact that what we put them through was only a test. For their own reasons, they will keep going. As far as they can."

Madison took out his notebook and seemed to look for vital information. Except that he never cracked the cover.

"Of course, we can't get them back if they won't come," he said. "If cybernetic remotes functioned operationally at this distance we wouldn't have to send men at all."

He replaced the pocket secretary and looked at me edgewise, speculatively.

I touched his arm.

"Let's find another bottle," I said.

He stepped back.

"You found them. You tested them. You killed them."

And the government man walked away and left me standing with a murderer.