“What on earth do you mean? You seem to be some sort of monomaniac—possessed with but one idea. I tell you that I am the man’s murderer. You can take your prisoner. And there’s an end of it.”

“Hardly. What we want to know just now is, how you account for these stains upon Miss Moore’s cloak.”

“I know nothing at all about it.”

“They are not the results of your cousin’s bleeding at the nose?”

“—— you, Symonds!”

“Thank you, Mr. Ferguson. That’s scarcely a matter which is likely to come within your province. You must take us for a pair of really remarkable simpletons, Gray and I, to wish us to believe that you know so much about the one thing and nothing at all about the other. It is odd.”

“As you please. I have admitted my guilt. If you decline to arrest me, I certainly shouldn’t be the one to grumble.”

“You shouldn’t be, but it seems that you are. Tell us the story of these stains. It may be that the explanation will make your guilt clear. Then we’ll arrest you with the greatest pleasure.”

I thought about what Hume had said about the advisability of concocting a plausible story which could hold water. I wished heartily that I had availed myself of his assistance to frame one there and then. I am one of the worst liars living. More than once, when the situation could have been saved by a lie, I have made a mess of things. I am without the knack which some men have; no one would mistake a lie of mine for truth. I felt that the two officers were watching me, with keenly observant eyes, incredulity written large all over them. I was conscious that I must say something. If Hume had only been there to prompt me! Bracing myself together, I made a plunge.

“I will tell you everything. I’ll keep back nothing. What would be the use? You’d be sure to find out.”