still guarded almost every opening in this abandoned city, rendering it so hazardous for unwary Earthmen. His groping hands found the narrow entrance to the building and he ducked in. Someone had been there before him, and recently, for the door-creature inside the alcove hung in tattered shreds. One of its torn, limp folds touched his hand as he passed, and with a sudden resurgence of alien life it contracted around his wrist. It tried to unleash its deadly shock, but it was weak and Nick felt only a faint tingle. He jerked free and went up the inside ramp at a fast but quiet run, his finger ready on the trigger as he neared the top. Then Nick stopped dead as he saw his target. The girl looked hardly more than a child. Her tattered blouse was pulled aside and she was mopping blindly at a bleeding gash low on one shoulder. The back of her other hand scrubbed at her closed eyes. Her face, framed in uncombed coppery hair, was peppered with grey freckles of rock dust thrown by Nick's explosive bullet. His boots gritting in the dust, warned her, for she whirled, opening red-rimmed, watering eyes and snatching up a heavy rifle. It would have been an easy shot, but Nick did not fire. Her rifle spat once into its silencer as he dived across the room and they went to the floor together. For a minute he was fully occupied in avoiding her teeth and fingernails and shrewdly placed kicks as she fought with the desperation of terror, but at last he got a grip on her hair and clipped her once on the point of the chin. He spat out a mouthful of acrid dust and tore the remains of her blouse into strips. There was haste and no gentleness in the way he tied her hands and feet. The exertion left him panting in the thin Martian air, so he took a breath of oxygen from his pocket sniffer bottle. Then, wanting to talk to the girl at once, he held the nosepiece to her face. He knew when she recovered consciousness, for her head twisted suddenly and her teeth sank into his hand. He slapped her face hard, and she lay staring up at him with hatred and terror. "You're Susan Jones," he declared. "Murderer!" she spat, her face twisted with loathing. He followed her glance to his uniform and laughed mirthlessly. "I'm outlawed," he snorted. "The Mec is after me just