"Come, Slave Jacob," commanded the Weapon. "We take this cruiser." Dazed and slack-faced, Jacob came out from behind a bush, where he had hidden himself from the Hovans, and followed the Weapon through the airlock. "Even in my insanity, I planned well," said the Weapon. "These ships, which I taught the Hovans to construct, can be operated simply, even by such as you. Attend my instructions." [Illustration] First, the Weapon taught Jacob to open and close the airlock. Then he was shown how to fuel the engines, upon which the Weapon made some changes to improve their performance. Finally, in the control room, Jacob learned to fly the ship. This took several hours, at the end of which time Jacob had succeeded in raising the cruiser into a satellite orbit around Hova. "Do you comprehend, Slave?" asked the Weapon. "Sure. This thing ain't nothin' to run compared to a T-model Ford! Which way is it to Earth?" "That I shall not tell you, Jacob, because I must leave the ship for a few hours and desire to find you here when I return. Consider and tell me: Will you be here?" Jacob gazed at the broad, star-spangled viewplate that curved around his seat at the controls. There was, he reflected an awful lot of nothing out there for a man to get lost in. "I'll be here," he promised. "Very good. You must understand that these controls are constructed for manipulation by such limbs as your own and those of the Hovans. Thus, it is convenient for me to use you as a pilot instead of doing the drab, mechanical task with my ill-suited force-field manipulators. You will be wise to serve me well, Jacob." Jacob nodded. "You got a point there." "Operate the lock for me," the Weapon ordered. Jacob did so and watched the colorful machine drift out of sight in the atmosphere below the cruiser. Minutes ticked quietly by as Jacob gazed down at the purple planet and wondered why the Weapon had not chosen a trained Hovan pilot instead of him. Also, he wondered how soon the Weapon would take him home to Earth. A great swath of the purple planet began turning black. The black dulled to the gray shade of ashes as the swath grew longer. Over the surface of Hova, the blackening moved like some colossal paint brush. Dense clouds of smoke rolled upward to the high reaches of the atmosphere. Jacob realized why the Weapon had not selected a Hovan pilot. When all of Hova was a lifeless ball in a fog of ash, the Weapon returned. "Ah, good Jacob!" it boomed jovially. "Let us be up and doing! Thirty-six planets remain to be visited before my current assignment is concluded!" "Do all of them get--that?" asked Jacob, nodding toward the lifeless world below. "Yes. I was instructed to render this solar system lifeless before I malfunctioned. Since then, the life of this system has spread, with my insane aid, to infest other systems. Of course, my task must now include all those new Hovan worlds." "Now wait a minute!" said Jacob in terror. "I can't let you do that!"