"By the way, how came you to be upon the bank?"

I hesitated. Should I tell him anything? And, if anything, how much? I knew that he was watching me. I decided to be frank.

"I fell out of the train."

"What train?"

"I was in the same compartment with this Mr. Tennant. We had a discussion. In the course of it I fell out."

"While the train was moving?"

"Yes. It was a miracle I was not killed. As a matter of fact I fell among some bushes, and was not even scratched."

"You say that you fell out. Do you mean that you fell out with Mr.

Tennant's help?"

"He had nothing to do with it. It was a pure accident. He may have thought that he had, but he had not."

"Is it possible that he thinks you were killed?"

"It is extremely possible. When that body was found I believe he thought that it was mine."

"This is very curious; but if he saw the body he would know it was not yours."

"Would he see it? Taking it for granted that it was mine, he would not want to see it, and would they compel him to see it against his will?"

His tone was contemplative.

"I suppose they wouldn't--no. So, if he is found guilty, and is sentenced to be hung, he will actually go to the gallows under the impression that he deserves his fate. I never heard of anything so curious."

It occurred to me that not the least curious part of the situation was the fashion in which he appeared to regard it from the point of view of a mere outsider. He continued to gaze at the fire. Presently he smiled again.

"And now may I venture to ask you why you have told me this extremely interesting sc.r.a.p of news?"

"Because I intend to save the life of an innocent man."

"How?"

"By laying the real facts of the case before the police."

"Unless I do what? I suppose there is something I can do to save myself. Otherwise you would have laid the real facts of the case before the police before."

"There certainly is a way by which you can constrain me to silence."

"Oh, yes; there are several ways of doing that."

Something in his tone caused me to grasp the revolver which I had slipped into my dress pocket. I had not known how he might take what I had to say. I had thought that it might be just as well that I should come prepared.

"You need not fondle that pretty little pistol of yours. I was not thinking of that way, I a.s.sure you."

The man's quickness of perception verged upon the supernatural.

"It is a matter of indifference to me whether you were or were not thinking of it. I am not afraid."

"I believe that you are not."

"I am not. You are wrong in saying that there are more ways than one of constraining me to silence. There is but one."

"And that is?"

"You may save yourself from the law by the law, and, so far as I am concerned, only by the law."

"Explain yourself."

"According to the law of England, on a capital charge, a wife may give no evidence against her husband."

Unless I was mistaken, he slightly started. Anyhow, his elbow came off the mantelboard and his arm fell to his side. There was silence.

Presently he returned his elbow to its former place upon the mantelboard.

"I see."

It was an e.j.a.c.u.l.a.t.i.o.n, rather than anything else. To the best of my judgment his face was expressionless as a mask. But I could not see his eyes--he kept them flamewards. Next time he spoke he confined himself to the utterance of a monosyllable.

"Well?"

"So far as I am concerned, that is all."

He stood up straight. He faced me, turning his back to the fire.

"May I ask why you wish to marry me?"

"I? It is you who wish to marry me, surely."

He regarded me with unwavering eyes.

"Let us be frank with one another. Why do you wish to marry me?"

"I am not conscious of having expressed any wish of the kind. I merely suggest that if I were your wife, in time, your neck would be saved.

Otherwise----"

I allowed the sentence to remain unfinished.

"I am not a prize in the matrimonial market."

"I have not inferred that you were. However, that is a question of the point of view."

"And your point of view is?"