Dick had been thinking rapidly. Suspicions had entered his head, and he could not shake them off. And still he knew that they would sound foolish to another.

“I’ll keep them to myself,” he said, “but I’ll keep an eye open.”

The train was just pulling into North Philadelphia when Shirley and Mabel opened their eyes the next morning. Mabel glanced at her watch.

“Seven o’clock,” she exclaimed. “We’ll have to hurry, Shirley. You know these fast trains don’t take long to reach New York from here. Besides, we want to get breakfast on the train.”

They dressed as rapidly as possible, and emerged from their drawing room just in time to see young Bristow stride down the aisle.

He gave them a cheery “good morning” and turned as Mr. Willing came up.

“I hope you will join us at breakfast, sir,” said Mr. Willing.

The young man accepted, and as Dick and Colonel Ashton appeared at this moment, all made their way to the diner together.

“Where shall you stay in New York, sir?” asked Bristow of Mr. Willing.

“At the McAlpin,” was the reply. “We shall spend the two days looking about the city, going aboard the Yucatan a couple of hours before time for her departure.”