But suddenly, with an odd twist, one of the Spacers plunged headlong without warning into a sister ship. Both exploded into a cataract of flame. Another wavered, wheeled, then plunged toward outer space at vertiginous speed, to disappear in a dwindling dot of silver. Of the remaining three, one began to fire broadsides against the others, then rotated over and over out of control, while air-locks opened and figures leaped out to instantaneous death in the frigidity of space. It was a scene of silent horror. But while scores died in space, hundreds died on Venus at the magnitude of the effort. Still the Venusian populace of millions concentrated in purposeful silence. A sense of madness unleashed stole into the laboratory room where Aladdian stood alone, motionless and white-faced. She scarcely breathed. Her blue eyes were dilated. On the screen now only one cruiser remained. Not until then did Aladdian move, her hand reaching out automatically to the dials. A second later the interior of Luhor's cruiser lay revealed. The huge half-breed had held out to the last. He'd realized what was happening, knew that the thought-power of an entire telepathic nation was reaching out across vast distances of space, the ghastly vibration of madness battering against the brains of his men. Now even Luhor began to succumb, his brutal face contorted by spasms of demoniac evil. His crew of men around him were already insane. A few sobbed monotonously on their knees, rocking from side to side. Others were already dead. One crewman was absorbed in daintily flaying another with a bright, keen penknife, while the rest were systematically destroying the ship and each other. In the midst of the scene, Luhor's face went suddenly grey and blank. He drew his electro-pistol and like a man possessed, used it methodically about him until only he remained alive. It was then that Aladdian used her last remaining strength, directing Luhor like an automaton to the controls, where he remained frozen. The vessel heeled in space and changed course, heading away from Earth now, speeding directly sunward toward Vulcan Base. Within the laboratory room, Aladdian swayed, her face whiter than death; she grasped at the instrument panel for support, but her fingers closed on air, as she crumpled to the floor. XIII She was barely conscious of Mark and Cynthia and Carston seconds later, bursting into the room. And of Mark's face mirroring his anxiety as he hurried to her. In the same instant she knew that her people's accumulative vibration had reached an apex of power, and like an avenging fury was turning _their way--centering on one person in that laboratory room_! Desperately Aladdian tried to stop it, but she was too near exhaustion and too late.