Then, as if rousing herself, she began to sway with a jerky rhythm, and presently whirled into the mazes of a dance that was ancient when the ocean drowned the black kings of Atlantis. I cannot describe it. It was bestiality and diabolism set to motion, framed in a writhing, spinning whirl of posturing and gesturing that would have appalled a dancer of the Pharaohs. And that cursed skull danced with her; rattling and clashing on the sand, it bounded and spun like a live thing in time with her leaps and prancings. [Illustration: "And that cursed skull danced with her, rattling and clashing on the sand."] But there was something amiss. I sensed it. Her arms hung limp, her drooping head swayed. Her legs bent and faltered, making her lurch drunkenly and out of time. A murmur rose from the people, and bewilderment etched Saul Stark's black countenance. For the domination of a conjure man is a thing hinged on a hair-trigger. Any trifling dislocation of formula or ritual may disrupt the whole web of his enchantment. As for me, I felt the perspiration freeze on my flesh as I watched the grisly dance. The unseen shackles that bound me to that gyrating she-devil were strangling, crushing me. I knew she was approaching a climax, when she would summon me from my hiding-place, to wade through the black waters to the House of Damballah, to my doom. Now she whirled to a floating stop, and when she halted, poised on her toes, she faced toward the spot where I lay hidden, and I knew that she could see me as plainly as if I stood in the open; knew, too, somehow, that only she knew of my presence. I felt myself toppling on the edge of the abyss. She raised her head and I saw the flame of her eyes, even at that distance. Her face was lit with awful triumph. Slowly she raised her hand, and I felt my limbs begin to jerk in response to that terrible magnetism. She opened her mouth---- But from that open mouth sounded only a choking gurgle, and suddenly her lips were dyed crimson. And suddenly, without warning, her knees gave way and she pitched headlong into the sands. And as she fell, so I too fell, sinking into the mire. Something burst in my brain with a shower of flame. And then I was crouching among the trees, weak and trembling, but with such a sense of freedom and lightness of limb as I never dreamed a man could experience. The black spell that gripped me was broken; the foul incubus lifted from my soul. It was as if light had burst upon a night blacker than African midnight. At the fall of the girl a wild cry arose from the blacks, and they sprang up, trembling on the verge of panic. I saw their rolling white eyeballs, their bared teeth glistening in the firelight. Saul Stark had worked their primitive natures up to a pitch of madness, meaning to turn this frenzy, at the proper time, into a fury of battle. It could as easily turn into an hysteria of terror. Stark shouted sharply at them.