"I do understand," I said. "Perhaps, under like circumstances, I should have done the same thing." I could see how terribly the man's conscience tortured him. I could see that he was essentially a man of honor. I could forgive him for the thing that he had done for an innocent creature whom he loved, but could he expect me to betray my country, betray my whole world, to save a woman I had never seen. Still, I was bothered. Frankly, I did not know what I should do when faced with the final decision. "At least," I said, "should I ever be situated as you were, I could appear to comply while secretly working to defeat their ends."

"It was thus that I thought," he said. "It is still the final shred by which I cling to my self-respect. Perhaps, before it is too Late, I may still be able to save both Vaja and yourself."

"Perhaps we can work together to that end and to the salvation of Helium," I said; "though I am really not greatly worried about Helium. I think she can take care of herself."

He shook his head. "Not if a part, even, of what Multis Par has told me is true. They will come in thousands of these ships, invisible to the inhabitants of Barsoom. Perhaps two million of them will invade Helium and overrun her two principal cities before a single inhabitant is aware that a single enemy threatens their security. They will come with lethal weapons of which Barsoomians know nothing and which they cannot, therefore, combat."

"Invisible ships!" I exclaimed. "Why I saw this one plainly after I was captured."

"Yes," he said. "It was not invisible then, but it was invisible when it came in broad daylight under the bows of your patrol ships and landed in one of the most prominent places in all Lesser Helium. It was not invisible when you first saw it; because it had cast off its invisibility, or, rather, the Morgors had cast it off so that they might find it again themselves, for otherwise it would have been as invisible to them as to us."