He talked mainly of the desert and the sport that it offered, as if he had studied her tastes and chosen the topic to please her. He spoke well; what he said was interesting, and showed complete knowledge of the subject, and at any other time Diana would have listened fascinated and absorbed, but now the soft, slow, cultured voice only seemed to add to the incongruity of the situation. The role of willing guest that he was forcing upon her was almost more than she could play, and the necessity of sitting still and responding was taxing her endurance to the utmost. And all the time she was aware acutely of his constant surveillance. Reluctantly her own furtive glance was drawn frequently to his face, and always his dark fierce eyes were watching her with a steadiness that racked her nerves, till she was reminded irresistibly of an exhibition that she had seen in a circus in Vienna, where a lion tamer had concluded an unusually daring performance by dining in the lions' cage, surrounded by savage snarling brutes very different from the sleepy half-drugged creatures ordinarily shown. Interested in the animals, she had gone behind with Aubrey after the performance, and while fondling some tiny lion cubs that had been brought for her to see had chatted with the tamer, a girl little older than herself. She had been somewhat unapproachable until she had realised from Diana's friendly manner that her questions were prompted by real interest and not mere curiosity, and had unbent with surprising swiftness, accepting Diana's proffered cigarettes and taking her to see her special lions, who were boxed for the night. Diana had wandered up and down before the narrow cages, looking at the big brutes still restless from the show, rubbing her cheek on the soft little round head of the cub she was holding in her arms, smiling at its sleepy rasping purr. "Are you ever afraid?" she had asked suddenly--"not of the ordinary performance, but of that last act, when you dine all alone with them?" The girl shrugged her shoulders, blowing a little cloud of smoke into the cub's face, and her eyes had met Diana's slowly over his little yellow body. "One does not taste very much," she had said drily. And it was so with Diana. She had eaten mechanically everything that had been put before her, but she had tasted nothing. She had one thought in her mind that excluded everything else--to hide from the probing eyes that watched her ceaselessly the overmastering fear that augmented every moment. One thing she had noticed during the meal. For her only the servant poured out the light French wine that he had brought. Her eyes wandered to the Sheik's empty glass, and meeting her glance he smiled, with a little inclination. "Excuse me. I do not drink wine. It is my only virtue," he added, with a sudden gleam leaping into his eyes that drove the blood into her cheeks and her own eyes on to her plate. She had forgotten that he was an Arab.