"Exaggerated answers," she returned, and as Charnock opened his mouth to reply, she hastened to continue: "Listen! Listen! Here's the strange thing! Not that I should need help, not that you should help me, not that I should come to you for help. Those three things--they are most natural. But that coming to you, I should come to the one man who can help, who already knows the way to help. Don't you understand? It is very clear to me. You were meant to help, to help me in this one trouble, so you were shown the means whereby to help." And seeing Charnock still impenetrable, she burst out: "Oh, he will not help! He will not understand!" and she took to considering how it was that he knew, how it was that he recognised the tune.

"You were in Tangier once," she argued. "Yes. You told me that not only to-day, but at Lady Donnisthorpe's. You crossed from Gibraltar?"

"Yes, just before I came to England and met you."

"Just before! Still you won't understand? You find out somehow--somehow in Tangier you come across a tune, an incident, something. Immediately after you meet a woman, at the first sight of whom you offer her your succour, and the time comes when she needs it, and that one incident you witnessed just before you met her gives you, and you alone in all the world, the opportunity to help her. Don't you remember, when you first were introduced at Lady Donnisthorpe's, what was your first feeling--one of disappointment, because I did not seem to stand in any need? Well, I do stand in need now--and now you turn away. And for my sake too! Was there ever such a tangle! Such a needless irony and tangle, and all because a man cannot put a woman from his thoughts!" And then she laughed bitterly and harshly, and so fell back again upon her guesses.

"You were in Tangier--how long?"

"For a day."

"When? Never mind! I know. I met you in June. You were in Tangier for a day in May. In May!" she repeated, and stopped. Then she uttered a cry. "May, that was the month. M. Fournier said May. You were the man," and leaning forward she laid a clutching hand upon Charnock's arm, which lay quiet on the table. "You were the unknown man who cried 'Look out!' through the closed door of M. Fournier's shop."

Charnock started. He was prepared to deny the challenge, if assent threatened to disclose his clue. But it did not. M. Fournier knew nothing of the blind beggar at the cemetery gate where Charnock had first heard the comic opera tune and registered it in his memory. That was evident, since in all M. Fournier's story, there was no mention anywhere of Hassan Akbar.

"Yes," he admitted. "It was I."

"And you shouted it not as a menace--so M. Fournier thought and was wrong--but as a warning to Ralph, my husband, whom you will not speak a word to save. You spoke a word then, very likely you saved him then. Well, do just as much now. I ask no more of you. Only speak the word! Tell me the clue, I myself will follow it up. Oh, he will not speak!" and in her agitation she rose up and paced the room.