It was that skin, of course, the synthetic substance they had put on him over the circuit. They should have tested it under these conditions. They might not have been so anxious to boil men alive.

He felt that he was almost invincible. It was an exhilarating feeling. He stopped trying to reload the tangle gun and stood up. He sprinted at the policeman, who stood his ground, firing frantically at a target he could not miss and yet did not hit. The tangle strands shattered all around the target.

Jadiver swung the gun with his remaining strength; the butt connected with the policeman's forehead.

Jadiver scooped up the discarded tangle gun and fired twice at close range, in case the man should decide to revive too soon, which was doubtful. He went back and entered the idling patrol car. He hadn't lost much time, after all.

He sat the car down on top of a building near the edge of the rocketport, straightened his clothing and wiped the grime off his face. Some of the disguise went, too, but that no longer mattered much.

He stepped out of the elevator and walked casually along the street until he came to the interplanetary flight office. The same robot was there—would be there every hour, day and night, until the rocketport was expanded and the building torn down and rebuilt, or the robot itself wore out and had to be replaced.

The clerk looked up eagerly. "You're back. I knew I could count on you."

"I'm interested in that flight you were telling me about," said Jadiver.

"We've changed rates," the robot clerk replied, beaming. "It was a bargain before, but just listen to the revised offer. We pay you, on a per diem basis—subjective, of course. When you arrive, you actually have a bank account waiting for you."

Per diem, subjective—the time that seemed to elapse when the rocket was traveling near the speed of light. It wasn't as good as the robot made it sound.