When at length this had been concluded, the woman rose and, bending, took from the bag the object that had been writhing within it. Eagerly we strained our eyes, and were amazed to see that it was a black cat. With a loud cry to Satan as ruler of the world, she took a long, thin dagger from her belt and plunged it into the animal, which expired almost without a struggle. Then, with a swift, dexterous movement she cut out the heart, and with its blood defiled the crucifix, an action which was applauded by the onlookers, now increased in number, and greeted with a loud laugh by the hideous representative of Evil at the end of that foul, terrible place. Next second, however, a circumstance occurred which rendered our concealment impossible. The priestess with a swift movement tore her veil from her face, while the priest took off his mask. The two faces revealed caused us to utter exclamations of surprise which at once rendered concealment no longer possible. The priestess was none other than Aline Cloud, and the priest the bony-faced scoundrel Hibbert, whom Muriel had loved! "We are discovered!" my love gasped. "Be careful, or your lives may be taken. These people are desperate." Both Jack and myself drew our revolvers in an instant, and ere we knew how it occurred, a door opened, and we found ourselves within the Temple of Evil, struggling in the confusion which had been caused. The man who had posed as Satan, director of the cult, had sprung down to earth in a moment, shouting to some hidden person to close all egress and bearing in his hand the gleaming dagger with which the worshippers had stabbed the sacred elements within the ciborium. Aline, when she had recognised us, gave a shriek and stood glaring at her lover, pale as death. Jack, tall, and strong as a lion, stood in the garb of the Christian Church within that foul den of the Diabolists and with a loud voice called upon them to remain quiet and listen. But at that instant I saw in the eyes of Satan a dangerous expression, and with a curse he sprang at Muriel with his knife, and would have struck her dead had I not been quick enough to arrest the blow and point my revolver at his head. "Would you," she cried, "attempt my life a second time? See!" and she pointed to me. "This man is my lover; and for your cowardly attempt to kill me you shall answer to him." "And this was the man who attacked you?" I cried, as he flinched beneath my aim. "It is only what might be expected of a man who masquerades as the Evil One." "You!" I heard Yelverton cry in a voice which showed how bitter was his regret, as he faced Aline, who in her long, black robe stood trembling and unsteady before him. "Then this is the truth," he cried hoarsely. "You are the priestess of Satan!"