The Lhari, with a gesture of disgust, handed them back. "Go, then, father and son," he said, not unkindly.

"Let's get going, Son," said the little bald man. His hand shook on Bart's, and Bart thought,If we're lucky, we can get out of the port before he faints dead away.He said "I'll get a copter," and then, feeling sorry for the stranger, gave him his arm to lean on. He didn't know whether he was worried or scared.Where was his father?Why did this man have his dad's papers? Was his father hiding inside the Lhari ship? He wanted to run, to burst away from the imposter, but the guy was shaking so hard Bart couldn't just leave him standing there. If the Lhari got him, he was a dead duck.

A copter swooped down, the pilot signaling. The little man said hoarsely, "No. Robotcab."

Bart waved the copter away, getting a dirty look from the pilot, and punched a button at the stand for one of the unmanned robotcabs. It swung down, hovered motionless. Bart boosted the fat man in. Inside, the man collapsed on the seat, leaning back, puffing, his hand pressed hard to his chest.

"Punch a combo for Denver," he said hoarsely.