"Now for a good night's sleep," said Jack, as he and his chums were being taken up in the elevator to their rooms that night. At the sound of the lad's voice a tall, dark man, in the corner of the car started. Then, as he caught a glimpse of the boys' faces, he turned so his own was in the shadow. "Well, well, luck has certainly turned things my way," he murmured. "Here's where I get even for the trick they played me on the train." Little imagining they were menaced by one who felt himself their enemy, the three chums went to their rooms, which adjoined. "Very good," whispered the dark man, who had remained in the corridor as the boys walked it. "I think I will pay you a visit to-night." CHAPTER XIX A THIEF IN THE NIGHT The boys were so tired from their day's adventures, and their travel that they did not need a bit of paregoric to make them sleep, as Nat expressed it, while he was undressing. They left the connecting doors open between their rooms, and, after putting their money and valuables under their pillows, soon fell into deep slumbers. It was about two o'clock in the morning when a dark figure stole along the corridor and came to a halt outside the door leading to Jack's room. "Doesn't make much difference which one I go in, I s'pose," was a whispered comment from the man, who was the same that had ridden up with the boys in the elevator. There was a slight clicking about the lock. Then something snapped. "No go that time," whispered the man. "Try another key." He selected one from among a bunch he held in his hand, and inserted it in the lock of the door leading to Jack's room. This time there was a different sort of click, "That's the time I did it," the intruder remarked softly. "Now to see if I can't get some of the money they made me lose on that other deal." Cautiously the man pushed open the door a few inches. It did not squeak, but, even when he had ascertained this, the thief did not enter at once. He paused, listening to the breathing of the three boys. "Sound asleep," he muttered. "No trouble. This is easy." On tiptoes he entered the room. The lights were all out but enough illumination came in from the street lights through the windows, to enable the intruder to see dimly. He noted that the connecting doors were open. "Easier than I thought," he muttered. "Now if they're like other travelers they have everything under their pillows. If they only knew that is the easiest place to get anything from! Pillows are so soft, and you can get your hand under one without waking up the slightest sleeper, if you go slow and careful." Up to the bedside of Jack the man stole. At every other step he stopped to listen. He moved as silently as a cat. "I fancy the laugh will be on the other side this trip," the man murmured. "I ought to get considerable from all three of them."