They didn't retreat, but with fierce yells charged straight into his gun. They were possessed, like Moros running amok. The last one was less than a yard away before he brought him down with a shot through the chest. That had been close. He felt weak as he pulled Reiloc from the water. "They know where we are," the giant Nehogan growled ominously, "our chances to--" "Look out!" Tabak screamed. Jupiter whirled around. He was just in time to see Lete run at him with Reiloc's sword. The cave girl had snatched it from the Nehogan's scabbard. Holding it like a lance, she flung herself on Jupiter, her face contorted with hate! * * * * * Jupiter jumped convulsively into the canal. His instinctive reaction was the only thing that saved him. He broke water, saw that Reiloc had wrenched his sword away from the cave girl. He was holding her as she fought furiously to tear herself away, kicking, clawing at the Nehogan's face with her nails. She had gone utterly berserk. Jupiter was stunned. Then he heard Tabak screaming: "Jupiter! Quick! It's the Anolyn! They've possession of her mind. Hurry!" He scrambled desperately back on to the ledge. "You've got to take that Anolyn from her neck! They know everything we do through her," Tabak cried wildly. "They've been in possession of her mind ever since we reached the canal. That's how they knew where to ambush us. Anywhere we go they'll be able to send men to intercept us." Jupiter nodded grimly. As he prepared the hypodermic of exsrocain, the Caligan girl pitched in and helped Reiloc pin Lete face-down on the ledge. Jupiter's fingers were shaking as he located a spot on Lete's naked back, plunged the needle between two of her vertebrae. "One--two--three--four," he counted. Without bothering to test for consciousness he wrenched the little plum-colored shell from the cave girl's neck, smashed it against the wall of the aquaduct. "Carry her!" he ordered Reiloc, and threw his instruments back into the pack, slipped a fresh drum of cartridges into the carbine. He could hear the thud of running feet on the ramp leading to the surface. "Back!" he said tersely. "We'll have to try another way!" For an hour they followed Tabak through the network of aquaducts, twisting, cutting down bisecting canals until Jupiter was exhausted. He and the big Nehogan had been carrying the unconscious wild girl by turns. Twice they saw Anolyn floating down to the sea like big purple squids, Jupiter shot them before they could telepath an alarm. Tabak was in the lead when she stopped abruptly, put her hand to her mouth. "What is it?" Jupiter hissed. "The canal! Look!" He raised his eyes. The tunnel came to a blind end just ahead. Then he saw that actually the roof dipped down beneath the surface. "We've reached the seawall," Tabak said in a stricken voice. "I've never tried to leave the city by the canals, but I've heard that it was impossible. I'd forgotten--"