"Why, what a thought, Hen!" She was obviously trying to hold back laughter. "But I thought you were superior to that sort of thing."

He jumped up from the table, turned his back to the girl staring off through the plastic walls. Immediately all thoughts of Sofi vanished.

"They're back!"

"What?"

"The robots. They've come back. They're in the laboratory. Look."

She came around the table, brushing against him, stared out at the lighted igloo. The heavy man-like machines were moving about inside the laboratory. Hen started for his quarters.

"Where are you going?" Sofi cried sharply.

"Get my oxygen suit."

"Wait. Don't be foolhardy. How do you know what they're up to? Talk to them first."

Hen hesitated. "All right." He went out onto the sun deck instead, snapped on the communicator.