Tallis ignored him. "If MacMaine deserted his former allegiance, knowing that they had a method of rendering the action of a space drive indetectable, then he was and is a blithering idiot. And we know he isn't."

"All right, all right! I concede that," snapped Hokotan. "He knows nothing. I don't say that I fully trust him, even now, but I'll admit that I cannot see how he is to blame for the reversals of the past few months.

"If the Earthmen had somehow been informed of our activities, or if we had invented a superweapon and they found out about it, I would be inclined to put the blame squarely on MacMaine. But——"

"How would he get such information out?" Tallis cut in sharply. "He has been watched every minute of every day. We know he couldn't send any information to Earth. How could he?"

"Telepathy, for all I know!" Hokotan retorted. "But that's beside the point! I don't trust him any farther than I can see him, and not completely, even then. But I concede that there is no possible connection between this new menace and anything MacMaine might have done.

"This is no time to worry about that sort of thing; we've got to find some way of getting our hands on one of those ghost ships!"

"I do suggest," put in the thick-necked Ossif, "that we keep a closer watch on General MacMaine. Now that the Earth animals are making a comeback, he might decide to turn his coat now, even if he has been innocent of any acts against Keroth so far."

Hokotan's laugh was a short, hard bark. "Oh, we'll watch him, all right, Ossif. But, as Tallis has pointed out, MacMaine is not a fool, and he would certainly be a fool to return to Earth if his leaving it was a genuine act of desertion. The last planet we captured, before this invisibility thing came up to stop us, was plastered all over with notices that the Earth fleet was concentrating on the capture of the arch-traitor MacMaine.

"The price on his head, as a corpse, is enough to allow an Earthman to retire in luxury for life. The man who brings him back alive gets ten times that amount.