"Well, the point is here. Your brother disappears at a certain time. At the same time this Irish adventurer disappears too, and your brother was known to have frequented the Irishman's company. It may be only a coincidence, but I can't help feeling that there's something in it."

Miss Benham was sitting up straight in her chair with a little alert frown.

"Have you spoken of this to my uncle?" she demanded.

"Well—no," said Ste. Marie. "Not the latter part of it; that is, not my having heard of O'Hara's disappearance. In the first place, I learnt of that only three days ago and I have not seen Captain Stewart since—I rather expected to find him here to-day; and in the second place I was quite sure that he would only laugh. He has laughed at me two or three times for suggesting that this Irishman might know something. Captain Stewart is—not easy to convince, you know."

"I know," she said, looking away. "He's always very certain that he's right. Well, perhaps he is right. Who knows?"

She gave a little sob.

"Oh!" she cried, "shall we ever have my brother back? Shall we ever see him again? It is breaking my heart, Ste. Marie, and it is killing my grandfather and, I think, my mother too! Oh, can nothing be done!"

Ste. Marie was walking up and down the floor before her, his hands clasped behind his back. When she had finished speaking the girl saw him halt beside one of the windows, and, after a moment, she saw his head go up sharply and she heard him give a sudden cry. She thought he had seen something from the window which had wrung that exclamation from him, and she asked—

"What is it?" But abruptly the man turned back into the room and came across to where she sat. It seemed to her that his face had a new look, a very strange exaltation which she had never before seen there. He said—

"Listen! I do not know if anything can be done that has not been done already, but if there is anything I shall do it, you may be sure."