juggernaut of destruction; a mad Terran; bloody, savage-eyed, lethal, he threw himself against the flank of the advancing trio, locked an arm around his throat, and with leverage obtained by wrapping his legs around the Martian's body, snapped the ugly head at the base of the spine. The Martian fell with the Terran under him. As Tommy cried, "Rex—Rex! Where did you come from?" the Terran had disentangled himself from the corpse and was engaging a second guard. Stunned by the suddenness of the attacks, the guard was easy prey for the Terran's death grip. A second spine snapped and as the Terran rose, he saw that the third guard had fallen before Maxis' sword. Maxis said, "Your aid was indeed timely." Rex wiped blood from his face and advanced like a great cat. "What are you doing with these people?" Tommy rushed forward. "It's all right, Rex. This is our friend. The old man is the Lord of the North Hemisphere. Maxis is trying to save his life. This is Helen Spencer. They were going to kill her." Maxis had again taken Fanton in his arms. "We have no time to discuss these things. Find a gun on one of those bodies and follow." He moved swiftly down the corridor. Tommy and Helen Spencer followed, but Rex strode forward until he was abreast of the Martian. "Where are we going?" There was suspicion and hostility in his voice—as though he suspected a trick. "I can't go into detail," Maxis said, "but believe me, our chances of survival lie in reaching a ray fountain we call the Place of Eternal Strength. The Emperor's life is at stake and ours also." As though on cue, two guards appeared from a cross-corridor. Grinning mirthlessly, Rex turned the gun on them. It spat forth a crackling ray that cut them in the middle and brought the upper halves of their bodies toppling to the floor. "Now lead the way," Rex said. He killed four more guards before they arrived at the Place of Eternal Strength, shooting them in the back without compunction as he stalked ahead of Rex, clearing the way. Upon arrival at their destination, Tommy cried, "Why this is the place where my arm was healed. I had a wound and then it was gone!" Maxis laid the body of Fanton on a marble couch under the singing colored rays. "Even greater miracles are