"Nothing," answered Prelice softly, and descended the stairs. When he stood in the street again he removed his hat, and drew a long breath of the smoky London air. Impure as it was, it dispelled the slight dizziness which the odour of the Sacred Herb had produced. Then the young man chartered a hansom to reach his rooms in Half-Moon Street; but not until he was in his very own den, and seated in an armchair with a brandy and soda within reach, did he find time to reflect. His reflections were considerably aided by a first-class cigar. "A queer adventure," thought Prelice meditatively. "What am I to do next, I should like to know?" Of course, the answer to this was obvious. He should go at once to Alexander Mansions, and learn if what Madame Marie said was correct. A very difficult errand to go upon, Prelice thought, as it would be hard to induce Mrs. Rover to explore her husband's dressing-room in search of evidence which might bring him into trouble. And what excuse could he make, without telling the whole truth? Then, again, Mrs. Rover might scoff at Madame Marie's astounding statement, made under such astounding conditions. Yet, on reflection, Prelice did not think that she would scoff, considering that she had consulted the fortune-teller herself, and believed in the occult. There was a considerable vein of what the vulgar call superstition in Constance Rover. That the dress was there, Prelice had not the least doubt. Of course, on the face of it, an ordinary mortal would laugh at the idea of evidence being procured in such a way. But Prelice had travelled too widely, and he had seen too much to make him a sceptic. In Cairo, in the West Indies, in South America, and in the South Seas, he had witnessed occult ceremonies and doings, which proved clearly the existence of that Unseen World at which many people laugh, and of which all people are afraid. Drink, drugs, music, rapid movement, and even absolute stillness, are all aids to open the psychic senses, as Prelice knew very well. Madame Marie had used the fumes of the Sacred Herb to rend the spirit from the body, and he quite believed that she had gone to Alexander Mansions to make the strange discovery. When she woke from the trance she would be--according to psychic laws--quite unconscious of what she had said.