"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, ma.s.sacring its human inhabitants; they had burned the Patrol Station; their red and violet rays were flashing everywhere. But I knew none of this.
Migul was saying:
"We cannot get to the palace above ground: the wall is electrified.
But there is an underground tunnel. Shall we try it?"
"Yes, if you think the Princess Tina and that man Larry is there."
"I am seeking Tugh. Will you kill him if we find him?"
"Yes," I a.s.sured him.
Rash promise!
Migul was leading me between the rows of unattended machinery to the cavern"s opposite side. It said, once:
"There have been too many recent vibrations here: I cannot pick Tugh"s trail. It is quicker to go where he might have been recently; there I will try to find his vibrations."
We came to the entrance of a tunnel. It was the cross pa.s.sage leading to the cellar corridors of the palace five hundred feet away. It seemed deserted, and was very dimly illumined by hidden lights. I followed the great metal figure of Migul, which stalked with stiff-legged steps in advance of me. The arch of the tunnel-roof barely cleared the top of Migul"s square-capped head.
My hand was in the side pocket of my jacket, my fingers gripping the ray cylinder for instant action. But it was a singularly ineffectual weapon for me under the circ.u.mstances, in spite of the sense of security it gave me. I could only use the cylinder against a human--and, save Tugh, it was the Robots, not the humans who were my enemies!
We had gone no more than a hundred feet or so when Migul slowed our pace, and began to walk stooped over, with one of its abnormally long arms held close to the ground. The fingers were stiffly outstretched and barely skimmed the floor surface of the tunnel. As we pa.s.sed through a spot of light I saw that Migul had extended from each of the fingertips an inch-long filament of wire, like finger nails.
The Robot murmured abruptly, "Tugh"s vibrations are here. I can feel them. He has pa.s.sed this way recently."
Tugh"s trail! I knew then that Tugh"s body, touching this ground, had altered to some infinitesimal degree the floor-substance"s inherent vibration characteristics. Vibrations of every sort are communicable from one substance to another. Tugh"s trail was here--his vibration-scent--and like a hound with his nose to the ground, Migul"s fingers with the extended filaments were feeling it. What strange sensitivity! What an amazing development of science was manifested in every move and act and word of this Robot! Yet, in my own Time-world of 1935, it was all crudely presaged: this now before me was merely the culmination.
"He recently pa.s.sed," said Migul. We stopped, I close beside the stooping metal figure. The Robot"s voice was a furtive sepulchral whisper that filled me with awe.
"How long ago?" I asked.
"He pa.s.sed here an hour or two ago, perhaps. The vibrations are fading out. But it was Tugh. Well do I know him. Put your hand down. Feel the vibrations?"
"I cannot. My fingers are not that sensitive, Migul."
A faint contempt was in the Robot"s tone. "I forgot that you are a man." Then it straightened, and the extended filaments slid back into its fingers. It said softly, "There is one guard in this pa.s.sage."
My heart leaped. "A human or a Robot?"
"A man. His name is Alent. He is at a gate that is too well fortified for any Robot to a.s.sail, but he will pa.s.s humans. It will be necessary for you to kill him."
I had no intention of doing that, but I did not say so. As we crept forward to where I saw that the tunnel made a bend, with the fortified gate just beyond it, there was in my mind that now I would do my best to separate from Migul, using this guard as my pretext, for he would doubtless pa.s.s me, but not the Robot. The palace was occupied, I a.s.sumed, by friendly humans. I could get them to locate Tina and Larry.... Then the flaws of this plan made themselves all too evident.
Larry might be with Tugh, and without Migul I could not follow Tugh"s trail. Worse than that, if I tricked Migul, the angered Robot would at once return to Mary. I shuddered at the thought. That would not do. I must try to get Migul past the guard.
I whispered, "When we reach the gate you stay behind me. Let me persuade the guard."
"You will kill him? You have the weapon. He is fortified against the Robot weapons, but yours will be strange to him."
"We will see."
We crept around the bend. A hundred feet further on I saw that the pa.s.sage was barred by a grille, faintly luminous with electrification.
I called cautiously:
"Alent! Alent!"
A glow of light illuminated me as I stood in the middle of the pa.s.sage; Migul was in a shadow behind me.
A man"s voice answered, "You are a human? How come you there? Who are you?"
"A stranger. A friend of the Princess Tina. I came in the Time-traveling cage. I want to pa.s.s now into the palace."
I could see the dark man"s figure behind the grille. His voice called, "Come slowly forward and stop at twenty feet. Walk only in the middle of the pa.s.sage: the sides are electrified, but I will admit you along the middle."
I took a step, but no more. The figure of the guard stood now at the grille doorway. I was conscious of Migul towering over me from behind.
Abruptly I felt a huge hand in my jacket pocket, and before I could prevent it my cylinder came out, clutched by the Robot.
I think I half turned. There was a soundless flash beside me, a tiny level beam leaped down the corridor--that horribly intense actinic white beam. It struck the guard, and his figure fell forward in the grille doorway. When we reached him, there was but a crumpled heap of black and white garments enveloping a bleached white skeleton.
I turned shudderingly away. Migul said calmly, "Here is your weapon.
You should have used it more quickly. I give it back to you because against Tugh I am not sure I would have the will to use it. Will you be more quick with him?"
"Yes," I promised. And as we went through the gate, keeping cautiously in the middle of the pa.s.sage, the Robot added, "In dealing with Tugh you cannot stop for talk. He will kill you when he sees you."
We were presently under the palace, in those lower corridors which I have already described. Human voices were audible from upstairs, but no one was down here. Migul was again prowling with his fingers along the ground. We came to an unoccupied lighted room--Harl"s room, though I did not know it then. Once or twice Migul was at fault. We started up a flight of stairs into the palace, then Migul came and turned back.
"He went upstairs; but this, coming down, is more recent."[1]
[Footnote 1: It will be recalled that Tugh pa.s.sed Alent"s gate, and with Tina and Larry went to the palace roof. Perhaps, while Larry was with the Council during that time when the Robot revolt was first sweeping over the city, Tugh may again have prowled down here in these lower corridors. Then he went upstairs, brought Tina and Larry down and they started for the Power House.]