And though he smiled pleasantly I saw in his thoughts the wish that he had never admitted me, and then a picture of him standing over me in the night, and the swift thrust of a long dagger and the half formed words, "I am sorry, but it is for the best good of Barsoom." As he closed the door of my chamber behind him his thoughts were cut off from me as was the sight of him, which seemed strange to me in my little knowledge of thought transference. What was I to do? How could I escape through these mighty walls? Easily could I kill him now that I was warned, but once he was dead I could no more escape, and with the stopping of the machinery of the great plant I should die with all the other inhabitants of the planet—all, even Dejah Thoris were she not already dead. For the others I did not