Holmes and I had listened with the utmost interest to this extraordinary statement, which had been delivered in the jerky, broken fashion of a man who is under the influence of extreme emotion. My companion sat silent now for some time, with his chin upon his hand, lost in thought.

“Tell me,” said he at last, “could you swear that this was a man’s face which you saw at the window?”

“Each time that I saw it I was some distance away from it so that it is impossible for me to say.”

“You appear, however, to have been disagreeably impressed by it.”

“It seemed to be of an unusual colour and to have a strange rigidity about the features. When I approached it vanished with a jerk.”

“How long is it since your wife asked you for a hundred pounds?”

“Nearly two months.”

“Have you ever seen a photograph of her first husband?”

“No, there was a great fire at Atlanta very shortly after his death, and all her papers were destroyed.”

“And yet she had a certificate of death. You say that you saw it.”

“Yes, she got a duplicate after the fire.”

“Did you ever meet anyone who knew her in America?”

“No.”

“Did she ever talk of revisiting the place?”

“No.”

“Or get letters from it?”

“No.”

“Thank you. I should like to think over the matter a little now. If the cottage is now permanently deserted we may have some difficulty. If, on the other hand, as I fancy is more likely the inmates were warned of your coming and left before you entered yesterday, then they may be back now, and we should clear it all up easily. Let me advise you, then, to return to Norbury and to examine the windows of the cottage again. If you have reason to believe that it is inhabited, do not force your way in, but send a wire to my friend and me. We shall be with you within an hour of receiving it, and we shall then very soon get to the bottom of the business.”

“And if it is still empty?”

“In that case I shall come out to-morrow and talk it over with you. Good-bye, and, above all, do not fret until you know that you really have a cause for it.”

“I am afraid that this is a bad business, Watson,” said my companion as he returned after accompanying Mr. Grant Munro to the door. “What do you make of it?”

“It had an ugly sound,” I answered.

“Yes. There’s blackmail in it, or I am much mistaken.”

“And who is the blackmailer?”

“Well, it must be the creature who lives in the only comfortable room in the place and has her photograph above his fireplace. Upon my word, Watson, there is something very attractive about that livid face at the window, and I would not have missed the case for worlds.”

“You have a theory?”

“Yes, a provisional one. But I shall be surprised if it does not turn out to be correct. This woman’s first husband is in that cottage.”