"Tact!" he grinned to himself, inserting the activator key. "Tact is what a fella needs." The little space flier shot aloft, until the tiny figure of the factor stopped shaking its fist and entered the residence. The post had a flier of its own, of course, but Morones was too wise to use it in pursuit.

Olear considered what was best to do. Of course he could have placed Morones under arrest; could still do it; but that would not solve the mystery of the two deaths and the missing 'lucene. If the choleric factor was really guilty of the crimes, it would be better to let him go his way in the hope that he would betray himself. Olear regretted that he had not kept his tongue under closer curb. But there was no use regretting. Perhaps, after all, he ought to turn back to pump Morones for some helpful information.


is mind made up, he descended again until he was hovering a few feet from the ground.

"Morones!" he called. "Morones!" He held the hatch open.

Morones came to the door of the residence. He had a tube in his hand, a long-range weapon.

"Morones," Olear declared pompously. "I place you under arrest!"

The effect was instantaneous. Morones lifted the tube, and a glimmering, iridescent beam sprang out. The ship was up and away in a second, lurching and shivering uncomfortably every time the beam struck it in its upward flight. A good few seconds continued impingement....

But a miss is as good as a light-year. Miles high, Olear looked into his telens. Morones had laid aside his tube and was working with an instrument like a twin transit. Plotting the ship's course, naturally. Olear set his course for the Earth, and kept on it for a good twenty-four hours. Morones, if he was still watching him, would think he'd gone back for reinforcements. Such an assumption would be incredible now, but that was before the I. F. P. had achieved its present tremendous reputation.