Keith Wells was like a white statue at the helm, save for the betraying trickles of sweat that coursed down his drawn cheeks. His hands moved the wheel slowly from port to starboard; his eyes bored at the screen before him. The ship was in command of a man of steel, a man with but one purpose....

"Up—up," he ordered. "Hold—in trim—full speed forward!"

He had brought the NX-1 directly in line with the octopi ship. And now the craft leaped forward under full power, while he shot the helm back and forth ceaselessly. His ship was describing a corkscrewing motion, weaving straight at the enemy. Grasping her opportunity, the octopi submarine remained motionless, steadily dousing the approaching American craft with her silent violet ray and driving the temperature in the control room to even greater heights.

The distance between them rapidly lessened. Would the plates stand it? Would the ray melt through the weakened steel before he could fire? With an effort Keith drove these doubts from his mind ... but he could not banish a certain dull, steady ache from his consciousness....


he range dwindled. The heat became intolerable. Everyone's clothing was sopping wet. A man ripped off his shirt, gasping for air. Wells kept his eyes on the screen, though half-blinded by smarting sweat. The plates had to give soon, he knew.

The octopi submarine, beam on and dead ahead, began to move to port at quickly increasing speed. At once Keith stopped swinging the helm, and the NX-1's corkscrewing motion of protection ceased. And then came the real test, the gauntlet of seconds.

Right straight into the retreating violet beam they went, at top speed. They gained rapidly. The heat was furnace-like. The commander, watching the range-finder, kept moving the helm slightly over. A shaft of violet heat spanned the two shells of metal. For ten seconds it had held on the NX-1. The black dot of the enemy craft moved slowly to exact center on the dial. Fifteen seconds ... twenty ... twenty-three—

"Fire!"