"Don't look, sir, but coming up behind you, I am certain, is a fellow I saw on the street outside the hotel just before we started," reported Seaman Runkle.
"Then we are being trailed," Dave said.
Not until the time came for starting did Lieutenant Totten shake hands hurriedly with his brother officers and leave them, though he still stood near the train.
Dave and Dan sprang into their compartment in one of the cars, Able Seaman Runkle following more slowly.
"There's that spy fellow getting on the running-board further down the train, sir," whispered Runkle.
"I expected him," answered Dave dryly.
"Would you like to lose him, sir?"
"Off the train altogether, do you mean, Runkle?"
"Yes, sir."
"Can you put him off without hurting him?"