Remi laughed. “Very quick thinking.” She pulled the blanket aside so Sam could sit up beside her.

An hour later, Dr. Huerta dropped them off in a larger village, and soon they were sitting in the back of a bus heading down toward the city of Cobán. From Cobán to Guatemala City was another hundred thirty-three miles, a five-hour trip.

When they reached Guatemala City, they checked into the Real InterContinental Hotel in the center of the Zona Viva, the tenth zone, where the best restaurants and nightlife can be found. When Sam and Remi were up in their room and could plug in their telephones to replenish their charges, Sam called the Guatemala City branch of an American bank where he had an account and arranged to rent a safe-deposit box.

He and Remi walked the three blocks to the bank, rented the box, and placed the gold and jade artifacts they’d found in the underground river in it, where they would be safe.

They walked back to their hotel, stopping in fashionable shops along the way to buy new clothes and a pair of suitcases, and then they called Selma.

“Where have you two been?” she asked. “We’ve been trying to call you for two days.”

“Our phone batteries ran down when we took them for a swim,” said Remi. She gave Selma the name of their hotel, their room number, and a brief version of how they had come to be there. She ended with, “And how is everything at home?”

“Bad,” said Selma. “I’m almost afraid to tell you.”

“I’m going to put you on speaker so Sam can hear too,” said Remi.

“All right,” said Selma. “Someone arranged to have four men come to the university and impersonate FBI and U.S. Customs agents and two Mexican cultural officials. They showed credentials, and the university administrators looked up the names to verify these people existed. So—”

“Did they get the codex?”

“Yes,” she said. “I’m sorry. I hope you won’t blame David Caine. The university’s lawyers said the codex had to be turned over to legitimate Mexican officials, so the academic vice chancellor led these men right to the archival room where David had the codex under a magnifier. We found out that the administrators even had the campus police standing by in case David had to be restrained.”

“We’re not blaming David,” Sam said. “See if you can find out where Sarah Allersby was at the time. The fact that we had a prowler right after she and her lawyers tried to buy the codex makes her my favorite suspect.”

“Her private plane took off from Los Angeles late the night after the theft,” Selma said. “She had been scheduled to fly out the evening after she came to the house, but a new flight plan was filed the night she actually left.”

“Where was she headed?” asked Sam.