She came closer, until her face was clear before him. Her grey eyes glowed softly. "I know of your mission here, Barry Williams," she said in her throaty voice. "Your mind was open to me when first we met in the mist." It had been she who hypnotized him! Barry nodded slowly, he'd suspected as much. "Then you must know I want to help your people. This fighting must stop. I promise you that, if I can reach Earth--if you will help me get a ship and fuel--I can win justice and freedom for your people!" The girl's eyes flashed. "A free Mars will make its own peace with Earth," she cried. Here was the spirit not of savages--but of a free race Earth could respect! Her voice softened. "But thank you, Barry Williams. You have been spared because your purpose here was friendly, and because I--I--trust you. "Now." Her eyes glowed from deep within, "You will sleep, Barry Williams, sleep the walking sleep under my will." * * * * * Barry met her gaze, feeling the impact of her mind. For long moments, his eyes were locked with hers. A puzzled doubt appeared at last on her features. "Sleep, Barry Williams," she murmured uncertainly. "Sorry," he grinned. "There's no more power in the mist over my will--and you can't hypnotize me against my will. Hypnotism is a new art with your people, Princess. You forgot to condition me to your commands." Deisanocta smiled. "An old Earthman implanted the science in my mind when I was but a child, being hidden from the oppressors. Much that is there, I do not know how to use." "Won't you let me help you," asked Barry Williams. "If you ignore my advice, that's up to you." She considered his words. Her eyes on his still glowed, but with a different light. "Very well," she said at last. "You may stay with me. After victory, you can be my emissary to Earth." Barry walked beside her, the Martians of her party following respectfully behind. "Why don't you take these men prisoners," Barry asked, "instead of killing them?" Deisanocta answered sadly: "My people have been killed and beaten too long. I could not restrain them. "Besides, these men could be dangerous. If some of my mist-producing units failed, those who sleep in that area would awaken after a few breaths of air. We would have enemies behind us." She smiled a little wistfully. "These Earthmen do not sleep as deeply as you did from those pills." "You must capture Craig Grey alive," he said with sudden realization. "While he sleeps under the influence of the mist, you can hypnotize him. Then we can learn the details of his fraud, how he deceived Earth about your people! With names and facts, we can convict him--prove his guilt!"