“What do you want me to do?” Joe Dawson asked.

“You know the morning train that leaves here, for Washington and New York?”

Joe nodded.

“Get aboard that train as soon as it comes in on the spur. If Oliver Dixon is aboard of it, and doesn’t leave when the Tampa station is reached, then jump out and telephone me here.”

“And then——?”

“Hustle aboard again, keeping Dixon in sight, but try to keep yourself out of his line of vision.”

“Something must be in the wind,” commented Joe.

“Something is in the wind,” his chum admitted. “If Oliver Dixon tries to leave here to-day, then I shall go to Mr. Tremaine, and he’ll very likely decide to have the authorities telegraph ahead to have Dixon arrested. If that should happen, you’ll be there to see that the officers don’t get someone else by mistake.”

“But Dixon might go around through the town of Tampa, instead,” objected Joe. “He might be too smart to take the northbound train here at the hotel.”

“Yes; or he might go through the town and take the Florida Central train,” assented Halstead. “If he doesn’t leave here by the train, but goes up through Tampa, then you, on board the train, will see him if he gets aboard at the Tampa station. If he doesn’t go by that train, you’ll be here in season to shadow him away in case he tries to leave by the Florida Central. So he can’t start north to-day without our knowing it. It’s best for you to do this work. Then, if Dixon is watching me, he’ll find me sitting on one of the porch chairs from which I couldn’t see him take the train. That will do a lot to throw him off his guard.”