"See here, Norris," snapped Bronson. "When I came to you about the invaders of earth you slapped me in the booby hatch. What would you say if I gave you proof?" "It will have to be mighty good," snapped Norris. From separate pockets Ed Bronson took the four bits of crystal. He set them side by side on the bench. "Virginia," he said, knowing that she was listening. "Now!" * * * * * And his hands scooped the crystals together. "Who are you--hey!" exploded Norris. They had come across the barrier and were standing in the laboratory building. In the viewer stood Virginia Carlson. She smiled through at them and showed them that she had once more separated the bits of crystal. "What goes on?" Norris stormed. "You are now on Earth Two," said Bronson. "And if you want to get back play it smart." "Don't threaten me--who are these?" "Three thugs from Earth Three." "Oh fine," jeered Norris. "This sounds like a real game. Now look--" "You look," snapped Bronson. He set the controls and snapped the button and the scene outside of the laboratory disappeared. In its place was a tall pillar of flame. "That," said Bronson, "is the pillar of atomic flame at Alamogordo, caused on Earth Two by the original Manhattan Project experiment in Nineteen forty-five." He spun the dials once more, and the city of Washington was visible at a distance. Its pillar of flame roared high into the sky. "That's Earth Two, Washington," he snapped at Norris. "But what can you do?" asked Norris, completely dumbfounded. "I can fight back--now," said Bronson harshly. "And you can sit in a corner and figure out a means for a man to come to official quarters to tell of an extra-space invasion without being clapped in the nuthouse!" He turned from Norris and adjusted the steering controls. His hand came down on the button. And Earth Three Washington erupted in a massive incandescent flame. Kingston shouted in anger as the report came. He twirled his own dials, found a response and pressed the button. He cried, "_Orders!_ Everyone possessing a Type One transmitter, help spread the atomic fire on Earth Two!" Out across the face of Earth Three went the orders and the mobilized hundreds of thousands of people started their space resonators. It was furious work. Bronson whirled the dials until the plane of view looked down upon Earth Two from several thousand miles above. From this point, Bronson knew that Kingston--from whatever hideout he was in--was directing a full-scale attack against Earth Two. The lights twinkled like a field of fireflies. Bronson knew that his own attempts were pitiful against Kingston's massed attack. Maybe Virginia was right. Maybe, in the final analysis Earth Three did hold all the tricks and would win. But whether or not he won or lost Bronson was going to fight to the bitter end. He directed his fire against Earth Three--and saw two disappear as one flared forth.