“I had fixed up the deal with Bartheimers,” he explained, “and had gone back to the Ritz to pick up my traps preparatory to having dinner and catching the nine o’clock train from the Gare du Nord. At the reception desk I saw a woman whom I was quite sure was Mrs. Kettering’s maid. I went up to her and asked if Mrs. Kettering was staying there.”

“Yes, yes,” said Van Aldin. “Of course. Naturally. And she told you that Ruth had gone on to the Riviera and had sent her to the Ritz to await further orders there?”

“Exactly that, sir.”

“It is very odd,” said Van Aldin. “Very odd, indeed, unless the woman had been impertinent or something of that kind.”