Barby put her arm around Jan's waist. "We'll be sure to invite you to the show. Won't it be fun?"

"If it's safe for us to let people know where we are by then," Jan said somberly.

They fell silent at the reminder that Jan's presence was far more serious than a casual visit. Finally Rick said, "We'll get to work on the sets this afternoon."

"Make it tomorrow," Barby said quickly. "I sort of promised Jan something...."

Rick and Scotty exchanged glances.

"I said you and Scotty would teach her how to use the aqualungs."

Rick breathed a sigh of relief. That would be no hardship. He and Scotty needed practice, anyway. They had hardly used the lungs since returning from the Virgin Islands.

Mrs. Brant summoned them to breakfast and they walked in to find Steve and the scientists gathered at the big table.

"Got everything settled?" Rick asked.

"Just about," Steve replied. "We have a job for you, though."