"You speak English? We are not skilled with Martian."

I wondered if at the next time of sleep this fellow would be on duty here. I hoped not; it would not be easy to trick him and find an opportunity to flash a signal. But that task was some hours away as yet; I would worry about it when the time came. Just now I was concerned with Miko and his little band, who at any moment might arrive in sight. If we could persuade this scowling duty-man to turn the projector on them....

He answered me in ready English:

"You are the man Gregg Haljan? And this is the sister of George Prince--what do you want up here?"

"I am a navigator. Brotow wants me to pilot the ship when we advance to attack Grantline."

"This is not the control room."

"No, I know it isn't."

I put my helmet carefully on the floor-grid beside Anita's. I straightened to find the brigand gazing at her. He did not speak; he was still scowling. But in the dim blue glow of the cubby I caught the look in his eyes.

I said hastily, "Grantline knows your ship has landed here on Archimedes. His camp is off there on the Mare Imbrium. He sent up a signal--you saw it, didn't you?--just before Miss Prince and I came aboard. He was trying to pretend that he was your Earth-party, Miko and Coniston."

"Why?"

The fellow turned his scowl on me, but Anita brought his gaze back to her. She put in quickly:

"Grantline, as Brother always said, has no great cunning. I believe he's planning now to creep up on us, catch us unaware by pretending that he is Miko."

"If he does that," I said, "we will turn this electronic projector on him and annihilate him. You have its firing mechanism here."

"Who told you so?" he shot at me.

I gestured. "I see it here. It's obvious. I'm skilled at trajectory-firing. If Grantline appears down there now, I'll help you--"

"Is it connected?" Anita demanded boldly.

"Yes," he said. "You have on your Erentz suits: are you going to the dome-roof? Then go."

But that was what we did not want to do. Anita's glance seemed to tell me to let her handle this. I turned toward one of the cubby windows; she said sweetly:

"Are you in charge of this room? Show me how that projector is operated; it will be invincible against the Grantline camp."

"Yes."

I had my back to them for a moment. Through the breast-high oval I could see down across the deck-s.p.a.ce and out through the side dome windows. And my heart suddenly leaped into my throat. It seemed that down there in the Earthlit shadows, where the spreading base of the giant crater joined the plains, a light was bobbing. I gazed, stricken. Miko's lights? Was he advancing, preparing to signal? I tried to gauge the distance; it was not over two miles from here.

Or was it not a light at all? With the naked eye, I could not be sure.

Perhaps there was a telescopic finder here in the cubby....

I was subconsciously aware of the voices of Anita and the duty-man behind me. Then abruptly I heard Anita's low cry. I whirled around.

The giant Martian had gathered her into his huge arms, his heavy-jowled gray face with a leering grin close to hers!

He saw me coming. He held her with one arm: his other flung at me, caught me, knocked me backward. He rasped:

"Get out of here! Go up to the dome, leave us."

Anita was silently struggling with her little hands at his thick throat. His blow flung me against a settle. But I held my feet. I was partly behind him. I leaped again, and as he tried to disengage himself from Anita to front me, her clutching fingers impeded him.

My bullet projector was in my hand. But in that second as I leaped, I had the sense to realize I should not fire it and with its noise alarm the ship. I grasped its barrel, reached upward and struck with its heavy metal b.u.t.t. The blow caught the Martian on the skull, and simultaneously my body struck him.

We went down together, falling partly upon Anita. But the giant had not cried out, and as I gripped him now, I felt his body limp. I lay panting. Anita squirmed silently from under us. Blood from the giant's head was welling out, hot and sticky against my face as I lay sprawled on him.

I cast him off. He was dead, his fragile Martian skull split open by my blow.

There had been no alarm. The slight noise we made had not been heard down on the busy deck. Anita and I crouched by the floor. From the deck all this part of the room could not be seen.

"Dead!"

"Oh, Gregg--"

It forced our hand. I could not wait now for Miko to come. But I could flash the Earth signal now, and then we would have to make our run to escape.

Abruptly I remembered that light down at the crater-base! I kept Anita out of sight on the floor and went cautiously to a window. The deck was in turmoil with brigands moving about excitedly. Not because of what had happened in our tower signal room; they were unaware of that.

Miko's signals were showing! I could see them now plainly, down at the crater-base. A group of hand-lights and a small waving helio-beam.

And they were being answered from the ship! Potan was on the deck--a babble of voices, above which his rose with roars of command. At one of the dome windows a brigand with a hand search-beam was sending its answering light. And I saw that Potan was working over a deck telescope-finder.

It had all come so suddenly that I was stunned. But I did not wait to read the signals. I swung back at Anita.

"It's Miko! And they are answering him! Get your helmet; I'll try firing the projector."

Or would I instead try to send a brief flash-signal to Earth? There would be no time to do both: we must escape out of here. The route up through the dome was the only feasible one now.

This range mechanism of the projector was reasonably familiar, and I felt that I could operate it. The range-finder and switch were on a ledge at one of the windows. I rushed to it. As I swung the little telescope, training it down on Miko's lights, I could see the huge projector on the deck swinging similarly. Its movement surprised the men who were attending it. One of them called up to me, but I ignored him.

Then Potan looked up and saw me. He shouted in Martian at the duty-man, whom he doubtless thought was behind me: "Be ready! We may fire on them, whoever they are. I'll give you the word."

The signals were proceeding. It had only been a moment. I caught something like, "_Haljan is impostor._"

I was aiming the projector. I was aware of Anita at my elbow. I pushed her back.

"Put on your helmet!"