"Come on!" ejaculated Nan tensely, as she elbowed and pushed her way through the crowd.

The two girls were almost upon the thin man and his companion before they were discovered. Then the fat man nudged his friend sharply, and before the girls could blink the men had slipped around the corner of the cabin and were lost to view among the crowd.

"Let's go after them," cried Bess excitedly. "We mustn't let them get away from us, Nan. Why, they were trying to get into our room. I saw them."

"Oh, Bess, hush," begged Nan as several people turned to look at the girls curiously. "Come inside a minute. I want to talk to you."

She opened the door and half pushed, half dragged the excited Bess inside the stateroom where the latter sank upon the berth and stared at her friend indignantly.

"You've gone and let them get away," she accused her hotly. "And that ugly thin man was trying to get in. We saw him."

"I know all that," said Nan a trifle impatiently. For several days her nerves had been under a considerable strain and the effort to think and act for Bess as well as herself was beginning to tell on her. "It wouldn't have done us the slightest good in the world to have gone after him. We never could have found him."

"But we can at least tell the captain," returned Bess, jumping to her feet impatiently. "I never saw a girl like you, Nan. I really believe you intend to let him get away."

"Well, what else can I do?" asked Nan quietly. "If I go to the captain and tell him I found a couple of men standing in front of my door and that I want them arrested, he will think that I'm crazy."