"Because when a man's handkerchief is found under such circumstances, it is advisable for the man to prove that he was not there too."

"Lest I be suspected of the murder of a man whom I never saw, and never even heard of until after he was dead?"

"We have only your own word for that," I returned, coldly; "but the rather definite clue of your handkerchief found in Mr. Pembroke's bedroom requires investigation, and I am here for that purpose."

"The deuce you are! Well, Mr. Landon, you are barking up the wrong tree! May I refer you to my man of business, and ask you to excuse me from a further discussion of this matter?"

"You may not! I am here, Mr. Gresham, if not exactly in an official capacity, yet with the authority of a lawyer employed on this case. And if I may advise you, merely as man to man, I think it will be better for you to question your memory a little more closely, and endeavor to recollect where you were on Wednesday night."

"Oh, suppose I can hark back to it. Let me see; I believe I motored up to Greenwich for the night. No, that was Tuesday night. And Thursday night I went to the theatre. Well, then it must have been Wednesday night that I was at the Hardings' to dinner. Yes, I was. I dined at the home of James S. Harding. And that you can verify from him. Now are you satisfied?"

"What time did you leave Mr. Harding's?"

"I don't know; about eleven or twelve, I suppose."

"And then where did you go?"

"Good Heavens! I can't remember every corner I turned! I think I stopped here at the Club before I went to my diggings; yes I'm sure I did."