"Guinea pigs," Doc told him sarcastically. It was meant as a joke, though a highly bitter one. Jake nodded and left them.
Doc opened the cots as Chris came in, not bothering to unpack the equipment. "Hit the sack, Chris," he told her.
She looked at him doubtfully. "You almost said that the way you'd address a human being, Dan. You're slipping. One of these days you'll like me again."
"Maybe." He was too tired to argue. "I doubt it, though. Forget it and get some sleep."
She watched him silently until he got up to turn out the light. Then she sighed heavily. "Dan?"
"Yeah?"
"I never got a divorce. The publicity would have been bad. But anyway, we're still married."
"That's nice." He swung to face her briefly. "And they found the radio in the microscope. Better get to sleep, Chris."
"Oh." It was a quiet exclamation, barely audible. There was a sound that might have been a sniffle if it had come from anyone else. Then she rolled over. "All right, Dan. I still want to help you."
He cursed himself for a stupid fool for telling her. Fatigue was ruining what judgment he had. From now on, he'd have to watch her every minute. Or had she really seen the value of the research by now? She wasn't a fool. It should have registered on even her stubborn mind. But he was too sleepy to think about it.