"What time does your elevator stop running?"
"Not at all, sir, we run it all night."
"And other men came in after Mr. Lawrence did that night?"
"Oh, yes, sir; lots of them. These is bachelor apartments, you know, and the men come in quite late—sometimes up till two or three o'clock."
Apparently Fleming Stone had learned all he wanted to know from the boy, and after he had thanked him and had also slipped into his hand a bit of more material reward, the interview was at an end.
We went out into the street again, and Fleming Stone said: "Now I should like to examine the Pembrokes' apartment."
"And shall you want to interview Miss Pembroke?" I inquired.
"Yes, I think so," he replied; "but we will look over the apartment first."
"We'll have something to eat first," I declared; "and if you'll come home with me, I'll guarantee that my sister will give you quite as satisfactory a luncheon as you could obtain in the best hotel in the city."
"I've no doubt of it," said Stone pleasantly; "and I accept your invitation with pleasure. Will you wait for me a minute, while I telephone?"