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Rh the other recruits, under guard of the regular Dusarian warriors that manned the craft.

Toward midnight Vas Kor returned to the vessel from his son's house, repairing at once to his cabin. Carthoris, with one of the Dusarians, was on watch. It was with difficulty that the Heliumite repressed a cold smile as the noble passed within a foot of him—within a foot of the long, slim, Heliumitic blade that swung in his harness.

How easy it would have been! How easy to avenge the cowardly trick that had been played upon him—to avenge Helium and Ptarth and Thuvia!

But his hand moved not toward the dagger's hilt, for first Vas Kor must serve a better purpose—he might know where Thuvia of Ptarth lay hidden now, if it had truly been Dusarians that had spirited her away during the fight before Aaanthor.

And then, too, there was the instigator of the entire foul plot. He must pay the penalty; and who better than Vas Kor could lead the Prince of Helium to Astok of Dusar?

Faintly out of the night there came to Car-