She took the bit of lace, glanced at it, and handed it back.

“It is not mine,” she replied. “Probably it’s the other woman’s.” She held out her hand, the most symmetrical hand Harleston had ever seen. “My letter, please, Mr. Harleston.”

“I no longer have the letter,” said Harleston.

“Then why did you—” she exclaimed; “but you can lay your hand on it?”

“I can lay my hand on it,” he smiled—“whenever you convince me, or I ascertain, that the letter does not concern directly or indirectly the diplomatic affairs of the United States. You forget that was the concluding stipulation, Mrs. Clephane. Meanwhile the letter will not, you may feel assured, fall into the possession of the party who attempted to steal it from you.”

“What does it all mean?” she asked, leaning forward. “Who beside France are the parties concerned?”

“It means that some nation is ready to take desperate chances to prevent your letter from reaching the French Ambassador. What actuates it, whether to learn its contents or to prevent its present delivery, I naturally do not know.” Then he laughed. “Would it interest you very much to learn, Mrs. Clephane, that I was visited last night by three men, who tried, at the point of the revolver, to force the letter from me?”

“You surely don’t mean it!” she exclaimed.

And with this exclamation the last doubt in Harleston’s mind of Mrs. Clephane’s having aught to do with the night attack vanished—and having acquitted her in that respect, there was scarcely any question as to the sincerity and truth of her tale.

As it has been remarked previously, Mrs. Clephane was very good to look at—and what is more to the point with Harleston, she looked back.