“It was the day the Olympic got to Southampton,” French prompted. “There would no doubt have been a number of people off the steamer special.” He glanced once more at the book. “See, here is a crowd of Americans all together. New York, Boston, New York, New York, Philadelphia, and so on. That represents the special. But——” He paused and ran his finger down the column. “Now, this is really rather interesting. Mrs. Root’s name is not among them. Here it is, down near the end of the list. That means that she came in late in the evening, doesn’t it? Does that help you at all, Miss Pearson?” He waited, but the girl not replying, he continued, “Or the room? Does No. 137 bring anything to your mind?”

The girl shook her pretty head.

“Turn up the account, Miss Pearson,” the manager suggested.

The girl produced another huge book, and all three went through the items. Mrs. Root, it appeared, had paid for the rooms—No. 137 was a suite consisting of one bedroom, bathroom and sitting-room—for the three nights, the 24th, 25th, and 26th of November. She had had seven meals in the hotel, dinner on the night of arrival, and breakfast, lunch, and dinner on the next two days. All these meals she had had served in her private room.

“Avoiding publicity,” French thought, continuing aloud, “Then she didn’t breakfast on the morning she left?”

At his remark Miss Pearson gave an exclamation.

“I remember her now,” she cried. “It was your saying that brought her to my mind. No, she didn’t breakfast the morning you mean because she left on the previous night. I remember the whole circumstances now. She came in on the night”—she glanced at the register—“of the 24th—pretty late—it was between seven and eight, I should think—and asked for a suite for three or four weeks. She was dark-haired and pale complexion and very American in her speech. I fixed her up with No. 137, and she said she wanted dinner sent up to her room. Two evenings later, shortly before eight o’clock, she came back to the office and said she had had an urgent wire from Paris, and that she had to go over that night. She hoped to be back in about a week, but she would not keep the rooms on, as she was not certain of her plans. I made out the bill, and what brings the thing back to my mind is that I had to charge her for that night in accordance with our rule. She didn’t seem to mind, the way some people do in such a case. She left then, and I never saw her since.”

This being all the pretty clerk could tell him, French asked next to see the chambermaid who had attended No. 137 on the night in question.

From this woman he at first learned nothing. For a quarter of an hour he prompted fruitlessly, then, just as in the case of the clerk, a chance word brought a ray of light. Asked if she could remember having seen luggage with Olympic labels and the name Mrs. Root, she suddenly admitted that she could. Her attention had been attracted by the name Root, as she had been reading in the papers of a distinguished American of the same name, and she had wondered if the owner of the luggage was any connection. She remembered the luggage distinctly. There were two big, new-looking American trunks, labelled on steamer labels, Mrs. Something Root. Yes, she thought it was Chauncey. Something like that anyway, some queer, foreign name that only an American would bear. But though she remembered the luggage, the chambermaid could not recall anything about the lady herself.

After fruitlessly interrogating several other of the hotel servants, French retreated into a deserted corner of the lounge and set himself to think the thing out. And presently it occurred to him that the trunks might represent a clue. Did their removal not involve a taxi, and if so, could he find it?