Someone in the crowd said: "You'd better come inside until you feel all right."

Paul shook his head and was happy to find that the knot inside had diminished to a faint pinpoint. His voice was sounding more like his own, too. "I've got to go," he said.

"But——"

The wail of sirens came and a police car dashed to the curb. It spilled policemen from all doors, who came warily. "What's going on here?" demanded the sergeant.

Paul explained.

"You'd better come to the station and lodge a complaint."

Paul shook his head. "I'm Paul Grayson of the Bureau of Astrogation," he said. "I could prove it but the crook has my identification papers. I'm due to take off for space within—" Paul looked at his watch—"within forty minutes," he finished.

"We'll require a complaint."

"Can't you take it?" pleaded Paul. "Good Lord, man, I can't identify a criminal that clipped me from behind. Hell, the only contact I had with him was hitting the back of my head against his blackjack."

The sergeant looked at the woman. "You can't help?"