The south of Europe belongs, in a sense, to no country. It is cosmopolitan. There is a charm in the pleasure-land of Cosmopolis, for it discourages speculation as to the lineage of your neighbour. One handsome couple merges into another, and the shrewdest guesses as to nationality are liable to be miscalculated. Therefore the glances that were directed towards Raife and Gilda were less inquisitive than they were of admiration. At the top of the staircase Raife assisted in the removal of the long cloak which had effectively hidden the dainty figure underneath. Hat and veil being also laid aside, Gilda's beauty revealed itself and dazzled the young man, further enmeshing him in the net of her mysterious charm. She had, to a large extent, prevented a flow of conversation by extracting his promise after those appealing requests: "Please don't ask me questions. Just trust me. Will you be my friend?" The aromatic fumes of oriental tobaccos, blending with the scents of rare exotic blossoms, and the variety of perfumes, with which women associate themselves, rose in a seductive, almost vaporous column to the broad landing which overlooked the throng in the foyer below. Raife Remington and Gilda Tempest had risen from their seat in the alcove, and leant over the marble balustrade. Each gazed on this scene of artificial gaiety with mixed emotions. For some minutes, neither spoke. The languorous tones of violin and 'cello in subdued concert, died away. The orchestra rose from their seats, to rest after the ordeal of the prolonged musical medley of alternated rhapsody, tango, and serenade. The movement became general, and the hum of conversation in a babel of talk swelled upwards. At last Gilda spoke. "I must go now. Tell me again that you have forgiven me, and that you trust me." "Gilda, I tell you again that I trust you. If you are in trouble, send for me, and I will endeavour to help you." "Good-night, Raife!" and she started up the next flight of stairs. Half-way up she stopped, and looking round, beckoned him. When he approached she whispered: "What is the number of your room? One never knows in these foreign hotels. I might need you." "My number is 26," he said. Again they parted, he wondering what she meant by placing so sudden a confidence in him. As he descended to the foyer for a final smoke, and that refreshment we have christened a "nightcap," he glanced upstairs again hoping to gain a final glimpse of his beloved. Instead, he saw--or was it fancy?--a tall figure looking down on him with a sardonic smile. For a moment only the sense of mistrust pervaded him. Then with an impatient gesture he muttered: "What's the matter with you, Raife Remington? You're all nerves to-night. It's time you had that whisky and soda." CHAPTER EIGHT. THE DOCTOR'S DOUBLE PERSONALITY.