The white mist meant the killing of Earthmen, and the rebellion would convince Earth Government that the Martians were savages. Barry Williams wanted to save human lives--even the lives of those who were murdering and robbing on Mars under the flimsy pretext of these laws. And he wanted to see justice done on Mars. These things were not very probable, though, Barry knew. Grey's clever move had trapped him on Mars. He hadn't enough fuel in his ship to reach Earth, nor was his radio strong enough to contact the planet. With the Earthmen trying to kill him, he'd be unable to get supplies. And the Martians had warned him to leave the planet--a second time the white mist might not spare him! Still, his only chance was to reach the Martians who were behind the white mist. If he could convince them of his intentions--he had to convince them! Then they might help him reach Earth; and hold off their ominous attacks against Earthmen until he could put the situation before the Government of Earth. If he could manage that, Barry was sure he could save human lives and do justice on Mars! He had to find the Martians! Barry brought his ship down low over the red sand and started his search. He knew that hostile Earthmen, armed to the teeth and intent on killing him, were searching also. Their search was successful, while he still looked vainly for Martians. Not even a nomadic wandering native was moving over the sands. And the blazing midday of the red planet brought the end of Barry Williams' opportunity. "These natives know something is up," he was musing. Above him, the sun was a ball of flame, its rays blistering, blinding through the thin atmosphere. It was out of this blind spot that a voice snapped across Barry's thoughts like a whiplash: "The game's up, Williams." He knew then that his thoughts had left him open to attack. "You heard me, Williams." The latter knew that cold, precise voice. It was Craig Grey. Barry could not see the ship, but he knew the ore-king's cruiser would be hovering high above, safely out of sight in the sun's rays. And from that focal point of his enemies, the ether began to crackle with orders. Other craft began to converge rapidly on the spot, very close to where the investigator had the white mist. They ringed Barry as the mist had, closed in. Their blazing ship rays, in the nose of each craft, formed spokes to a wheel of which Barry Williams' ship was to be the hub. He charged into that ring, broke it! He scattered them before him, some of them dropping downward with blazing hulls. But, as often as he drove them before him, Grey's cold, hard face appeared in the visa-radio. His commands reformed the others, brought them back to the attack. Finally, as Barry fought off another encirclement, the space cruiser of Craig Grey dropped unseen from above. Four red rays reached toward the investigator's ship, closed about it like the fingers of a hand.