“Maybe it ended up in someone else’s envelope,” Zoe said hopefully.

George nodded toward the open ledger. “Let’s go over the inventory and see.”

As Zoe read off the names written in Greek in the inventory ledger, George and Bess checked the contents of each envelope. While they worked, Nancy paced the office, looking for a clue as to who might have tampered with the hotel safe.

Kneeling beside the safe, she looked inside and ran her fingers over the walls of the empty interior. Since there was no damage to the safe, Nancy deduced that either someone knew the combination or was an expert at combination locks. Whoever it was must have been in a hurry, she thought, since they hadn’t even closed the safe.

“Who has the combination to the safe?” Nancy asked Zoe.

“Just my father and me,” Zoe answered.

“Do you remember who opened the safe last?”

Zoe frowned. “Not really. Things were so hectic today, with that British tour group checking out and a few families checking in. I must have gone into the safe nearly a dozen times myself. But it’s not like Papa—or me—to forget and leave it unlocked.”

She returned to the inventory with grim determination. “Let’s see if anything else is missing,” she said.

“A diamond necklace!” Bess remarked as a glittering necklace spilled out of one envelope.

“We’ve come across a lot of cash, too,” George added. “It’s hard to believe that a thief would leave all this behind.”

Good point, Nancy thought, checking the area around the safe. A shelf of ledgers seemed undisturbed, as did the wooden file cabinet beside the safe. It looked as if whoever had opened the safe and stolen Bess’s passport knew exactly where to look for it. And it wouldn’t be hard for a staff member to watch Zoe or her father open the safe and remember the combination.