"Yes, sir," was the laconic answer.

"Anything serious?"

"No, sir. He—he hurt his hand," and the waiter disappeared without another word. Carroll thought nothing more of it at the time, but later, over his coffee and a good cigar, a sudden idea struck him. Could it be that Felix was one of the men whom he had surprised the night before, the one he had fired at and hit? No, that was too much of a coincidence. But then Felix was manifestly of foreign origin, and, while he claimed to be Swiss, there was a distinct Teutonic rasp to his words upon occasion.

Signaling to his waiter, Dave inquired whether he knew where Felix lived. "I'd like to know if there is anything that I can do for him," he gave as his reason for asking.

"I haven't the slightest idea," came the answer, and Carroll was aware that the man was lying, for his demeanor was sullen rather than subservient and the customary "sir" was noticeable by its absence.

Once in the lobby, Dave noticed that the pretty telephone operator was again at the switchboard, and the idea occurred to him that he might find out Felix's address from the hotel manager or head waiter.

"I understand that my waiter has been hurt in an accident," the operative explained to the goddess of the wires, "and I'd like to find out where he lives. Who would be likely to know?"

"The head waiter ought to be able to tell you," was the reply, accompanied by the flash of what Carroll swore to be the whitest teeth he had ever seen. "Just a moment and I will get him on the wire for you." Then, after a pause, "Booth Number Five, please."

But Carroll got no satisfaction from that source, either. The head waiter maintained that he knew nothing of Felix's whereabouts and hung up the receiver in a manner which was distinctly final, not to say impolite. The very air of mystery that surrounded the missing man was sufficient to incline him to the belief that, after all, there might be something to the idea that Felix was the man he had shot at the night before. In that event, it was practically certain that Lord Wimbledon was the object of the Germans' attention—but that didn't solve the question of where the bomb was to be placed, nor the location of "Conner's."

"Just the same," he muttered, half aloud, "I'm going to stick around here to-night."