he Robot indicated the combination. I verified it by trying it. I said once more, "You are sure Tugh cannot do this?"

"Yes. I am sure."

Was the Robot lying to me? Could a Robot lie? I had to chance it.

"All right, let's start. Where was Tugh to meet those Robot leaders?"

"Out here. He has already met them without doubt, and gone somewhere else."

"He said he was going to the Princess Tina. Where would that be?"

"Probably in the palace."

"Can we get there?"

I had, of course, no idea of the events which had transpired. The laboratory overhead was deserted, save for the upper tower where a Robot was still broadcasting defiance. His electrical voice floated faintly down to us; but I ignored it. In the comparative silence of this deserted cavern, now, there were also the blurred sounds from overhead. The Robots were running wild over the city, massacring its human inhabitants; they had burned the Patrol Station; their red and violet rays were flashing everywhere. But I knew none of this.