"Of course I said something," returned Nan. "I asked him what he was doing at my stateroom door and what he wanted."

"What did he say?" whispered Bess, her eyes wide in wonder.

"He said that he was very sorry. That he thought this was his stateroom. That he wouldn't have startled me for the world. And then he bowed himself out and I slammed the door after him."

"But, Nan," Bess had regained her breath again and felt in the mood for an argument, "how do you know that the man really hadn't made a mistake? I suppose it would be easy enough to get mixed up."

"Bess, that man didn't make any mistake," said Nan Sherwood with such conviction in her voice that once more Bess was startled.

"How do you know?"

"He was the meanest man I ever saw—his looks I mean," said Nan, apparently not noticing her chum's interruption. "If you could have seen him as I opened the door, you would feel just the way I do. He had probably seen us going down to dinner and thought it was a good chance to get into the stateroom and steal——"

"Steal!" gasped poor Bess, for Nan was getting her pretty thoroughly frightened. "You mean he was a thief, Nan?"

"Of course," Nan returned impatiently. "I don't suppose honest men are in the habit of sneaking into empty staterooms."