I knew and felt that there were good and evil forces. Now, suppose Zara were commanded by some strange evil thing, unguessed at, undreamt of in the wildest night-mare? I shuddered as with icy cold. It could not be. I resolutely refused to admit such a fearful conjecture. Why, I thought to myself, with a faint smile, I was no better in my imaginings than the so virtuous and ever-respectable Suzanne Michot of whom Madame Denise had spoken. Still the hateful thought came back again and again, and refused to go away. I went to my old place at the window and looked out. The moonlight fell in cold slanting rays; but an army of dark clouds were hurrying up from the horizon, looking in their weird shapes like the mounted Walkyres in Wagner's "Niebelungen Ring," galloping to Walhalla with the bodies of dead warriors slung before them. A low moaning wind had arisen, and was beginning to sob round the house like the Banshee. Hark! what was that? I started violently. Surely that was a faint shriek? I listened intently. Nothing but the wind rustling among some creaking branches. "A woman wailing for her demon-lover." How that line haunted me! And with, it there slowly grew up in my mind a black looming horror; an idea, vague and ghastly, that froze my blood and turned me faint and giddy. Suppose, when I had consented to be experimented upon by Heliobas--when my soul in the electric trance was lifted up to the unseen world--suppose an evil force, terrible and all-compelling, were to dominate ME and hold me forever and ever! I gasped for breath! Oh, so much the more need of prayer! "Pray much and often, with as unselfish a heart as you can prepare." Thus Heliobas had said; and I thought to myself, if all those who were on the brink of great sin or crime could only be brought to feel beforehand what I felt when facing the spectral dread of unknown evil, then surely sins would be fewer and crimes never committed. And I murmured softly, "Lead us not into temptation, but deliver us from evil." The mere utterance of these words seemed to calm and encourage me; and as I gazed up at the sky again, with its gathering clouds, one star, like a bright consoling eye, looked at me, glittering cheerfully amid the surrounding darkness. More than ten minutes had elapsed since Prince Ivan had left the room, and there was no sound of returning footsteps. And where was Zara? I determined to seek her. I was free to go anywhere in the house, only avoiding her studio during her hours of work; and she never worked at night. I would go to her and confide all my strange thoughts and terrors to her friendly sympathy. I hurried through the hall and up the staircase quickly, and should have gone straight into Zara's boudoir had I not heard a sound of voices which caused me to stop precipitately outside the door. Zara was speaking. Her low, musical accents fell like a silver chime on the air.