"We should lose no time, Prince," replied Kantos Kan. "Already the people of Hastor are questioning the purpose of so great a fleet fully manned with fighting-men. I wonder much that word of it has not before reached Zat Arrras. A cruiser awaits above at your own dock; let us leave at—" A fusillade of shots from the palace gardens just without cut short his further words.

Together we rushed to the balcony in time to see a dozen members of my palace guard disappear in the shadows of some distant shrubbery as in pursuit of one who fled. Directly beneath us upon the scarlet sward a handful of guardsmen were stooping above a still and prostrate form.

While we watched they lifted the figure in their arms and at my command bore it to the audience chamber where we had been in council. When they stretched the body at our feet we saw that it was that of a red man in the prime of life—his metal was plain, such as common soldiers wear, or those who wish to conceal their identity.

"Another of Zat Arrras' spies," said Hor Vastus.

"So it would seem," I replied, and then to the guard: "You may remove the body."

"Wait!" said Xodar. "If you will, Prince, ask that a cloth and a little thoat oil be brought."

I nodded to one of the soldiers, who left the chamber, returning presently with the things that Xodar had requested. The black kneeled beside the body and, dipping a corner of the cloth in the thoat oil, rubbed for a moment on the dead face before him. Then he turned to me with a smile, pointing to his work. I looked and saw that where Xodar had applied the thoat oil the face was white, as white as mine, and then Xodar seized the black hair of the corpse and with a sudden wrench tore it all away, revealing a hairless pate beneath.

Guardsmen and nobles pressed close about the silent witness upon the marble floor. Many were the exclamations of astonishment and questioning wonder as Xodar's acts confirmed the suspicion which he had held.

"A thern!" whispered Tars Tarkas.

"Worse than that, I fear," replied Xodar. "But let us see."