I turned to say something to Kennedy and found that he was looking in another direction. We were not the only observers. From a window outside on the porch the sallow-faced man was also watching. As Shelby walked away the man seemed to be very angry. Was it the anger of jealousy because Paquita was with Shelby or was it anger because Shelby had repulsed her advances? Who was the fellow and why was he so interested in the little dancer and the young millionaire?

Hastings rejoined us from the telephone-booth, his face almost pale.

“It’s a fact,” he groaned. “They have been trying to reach me all day, but could not. The secret of the telautomaton stolen—the secret that is too terrible to be in the hands of any one except the Government. How did you hear of it?” he asked Burke.

Burke answered slowly, watching the expression on Hastings’s face. “When the cashier of the company arrived at the office this morning he found the safe had been rifled. It seems an almost incomprehensible thing—as you will understand when you see it for yourself. The cashier telephoned at once to the Secret Service in the Custom-House, and I jumped out on the case. You did not go to your own office. I did a little hasty deduction—guessed that you might have gone to see Kennedy. At any rate, I wanted to see him myself.”

Kennedy interrupted long enough to tell about the revolver-shot and the attack on Hastings at our very door.

“Whew!” exclaimed Burke, “just missed you. Well,” he added, with a dry sort of humor, “I missed you, too, and decided to come out here on the train. Kennedy, you must go back to town with me and look at that safe. How anybody could get into it is a mystery beyond me. But the telautomaton is gone. My orders are simple—get it back!”

For a moment neither Kennedy nor Hastings spoke. It was most peculiar—the plans gone in Westport, the model gone in New York.

“Who could have stolen the model?” I asked, finally. “Have you any theory, Burke?”

“A theory, yes,” he replied, slowly, “but no facts to back it. I suppose you know that the war has driven out some of the most clever and astute crooks that Paris, Vienna, London, and other capitals ever produced. The fact is that we are at present in the hands of the largest collection of high-grade foreign criminals that has ever visited this country. I think it is safe to say that at present there are more foreign criminals of high degree in New York and at the fashionable summer resorts than could be found in all the capitals of Europe combined. They have evaded military service because at heart they are cowards and hate work. War is hard work. Then, there is little chance of plying their trade, for their life is the gay life of the cafés and boulevards. Besides, America is the only part of the world where prosperity is reigning. So they are here, preying on American wealth. Suppose some one—some foreign agent—wanted the telautomaton. There are plenty of tools he could use for his purpose in obtaining it.”

The countenance of the sallow-faced man recurred to me. It was an alarming possibility that Burke’s speculation raised. Were we really not involved in a pure murder case, but in the intricacies of the machinations of some unknown power?