Oh, the pictures that came back! Pictures I had not seen at the time but which now would never leave me.

Perhaps he saw my emotion; perhaps he only realized it, but an instant of silence passed before he quietly added:

“A man thinks he’s honest till he comes to the point of trial. When they asked me if I wrote anything to anybody about that key, I said No, for I didn’t write anything as you must know who read the printed letters I pasted in such crooked lines on a slip of paper.”

I smiled; it was easy to smile that night.

“You know where the key was found. How do you think it got there?”

“In the flower-pot? Of course, I can’t say for certain, but this is how I’ve figured it out. On the morning he died, you found him, as you must remember, in the same flannel robe which he had worn while sitting up. This was because he would not allow me as he had always done before to remove it. That robe was buttoned close to his neck when we left him, but it was not so buttoned in the morning, and we know why. He had wanted to use the key he wore strung on a chain about his neck, and that key hung under his pajama jacket. To get it he had first to unfasten his dressing-gown and then his pajama jacket, or if he did not want to go to that trouble, to simply pull it up into his hand by means of the chain which held it. He probably did the latter, being naturally impatient with buttons and such like and letting it fall within reach, went about the business he had planned.

“So far excitement had kept him up, but when, after an act which would have tired a well man, he came back into his room—Well! that was different. He could draw into place the shelves which had hidden the secret stairway, and he could put out the light in his closet; for all this had to be done if he did not want to give away his secret. And he could manage, though not without difficulty, I’m sure, to reach and unlock his two doors; but that done, the little job of unbuttoning his jacket, throwing the chain over his head and rearranging his whole clothing so that the key would be invisible to his nurse when she came in, was just a little too much. But the key had to be hidden, and hidden quickly and easily, and he being, as there is every reason to believe on the further side of the bed where he had gone to unlock the upper door, he was at this time of failing strength within a foot of the potted plant standing in the window, and this gave him his idea.

“Gathering up the chain and key in his hand, he made use of the latter to push aside the soil in the pot sufficiently to make a hole large enough to hold anything so thin and slight as that chain and key. A flick given by his fingers to the loose mold and they were covered. That’s how I’ve reasoned it out; and if it is not all true some of it is for his slippers were found lying on that side of the bed, instead of under the stand by the closet where I had placed them on taking them off. What do you think, sir? Doesn’t that answer your question?”

“Yes, Clarke, as well as it ever will be answered. Have you given this explanation to Miss Bartholomew, or to any one else in fact?”

“No, sir. I’m not quick to talk and I should not have said as much to you if you had not asked me. For after all it is only my thoughts, sir. We shall never know all that passed through the mind of your uncle during those last three hours.”