I reeled back from the roof edge, rent in twain by indecision. Even the stimulus of the elixir was not equal to this. Then a sound brought me about to see Hassim struggling dizzily to his knees. I reached him with two long strides and ruthlessly smashed him down again. Then I noticed a queer sort of contrivance dangling from his girdle. I bent and examined it. It was a mask similar to that worn by Santiago. Then my mind leaped swift and sudden to a wild desperate plan, which to my dope-ridden brain seemed not at all wild or desperate. I stepped softly to the tower and, opening the door, peered inward. I saw no one who might need to be silenced, but I saw a long silken robe hanging upon a peg in the wall. The luck of the dope fiend! I snatched it and closed the door again. Hassim showed no signs of consciousness but I gave him another smash on the chin to make sure and, seizing his mask, hurried to the ledge. A low guttural chant floated up to me, jangling, barbaric, with an undertone of maniacal blood-lust. The negroes, men and women, were swaying back and forth to the wild rhythm of their death chant. On the teocalli Santiago stood like a statue of black basalt, facing the east, dagger held high--a wild and terrible sight, naked as he was save for a wide silken girdle and that inhuman mask on his face. The moon thrust a red rim above the eastern horizon and a faint breeze stirred the great black plumes which nodded above the voodoo man's mask. The chant of the worshipers dropped to a low, sinister whisper. I hurriedly slipped on the death mask, gathered the robe close about me and prepared for the descent. I was prepared to drop the full distance, being sure in the superb confidence of my insanity that I would land unhurt, but as I climbed over the ledge I found a steel ladder leading down. Evidently Hassim, one of the voodoo priests, intended descending this way. So down I went, and in haste, for I knew that the instant the moon's lower rim cleared the city's skyline, that motionless dagger would descend into Gordon's breast. Gathering the robe close about me so as to conceal my white skin, I stepped down upon the roof and strode forward through rows of black worshipers who shrank aside to let me through. To the foot of the teocalli I stalked and up the stairs that ran about it, until I stood beside the death altar and marked the dark red stains upon it. Gordon lay on his back, his eyes open, his face drawn and haggard, but his gaze dauntless and unflinching.