"I must go slow," he mused. "If I'm not careful he'll get away again."

When Nick Smithers left the dining car Nat followed him to the smoker and saw the swindler settle down for a comfortable smoke.

"He isn't going to leave the train just yet," thought our hero. "I shouldn't be surprised if he is bound for Albany. If that's so, I had better wait until we arrive there. Then we'll be in New York State, where the offense was committed."

The train rattled on, and at the proper time rolled into the big station at Albany. Nat kept close behind Nick Smithers and at the same time looked around anxiously to see if he could find a policeman.

It was not long before our hero sighted an officer of the law, gazing curiously at the crowd leaving the train. At once he beckoned the policeman to come to him.

"What's wanted?" asked the officer, anxiously.

"Do you see that man?"

"Yes."

"He is a swindler, who is wanted in New York City for swindling several men and myself. I want him arrested. Be careful how you handle him, for he ran away from me in Springfield."

"You are sure of this?"