Then, leaving the chair where it was, I betook myself out of the front door, ostentatiously stopping to lock it and to put the key in my pocket.
Crossing immediately to Mr. Moore's side of the street, I encountered him as I had expected to do, at his own gateway.
"Well, what now?" he inquired, with the same exaggerated courtesy I had noticed in him on a previous occasion. "You have the air of a man bringing news. Has anything fresh happened in the old house?"
I assumed a frankness which seemed to impose on him.
"Do you know," I sententiously informed him, "I have a wonderful interest in that old hearthstone; or rather in the seemingly innocent engraving hanging over it, of Benjamin Franklin at the Court of France. I tell you frankly that I had no idea of what would be found behind the picture."
I saw, by his quick look, that I had stirred up a hornets' nest.
This was just what I had calculated to do.
"Behind it!" he repeated. "There is nothing behind it."
I laughed, shrugged my shoulders, and backed slowly toward the door.
"Of course, you should know," I retorted, with some condescension.
Then, as if struck by a sudden remembrance: "Oh, by the way, have you been told that there is a window on that lower floor which does not stay fastened? I speak of it that you may have it repaired as soon as the police vacate. It's the last one in the hall leading to the negro quarters. If you shake it hard enough, the catch falls back and any one can raise it even from the outside."
"I will see to it," he replied, dropping his eyes, possibly to hide their curious twinkle. "But what do you mean about finding something in the wall behind that old picture? I've never heard" But though he spoke quickly and shouted the last words after me at the top of his voice, I was by this time too far away to respond save by a dubious smile and a semi-patronizing wave of the hand. Not until I was nearly out of earshot did I venture to shout back the following words:
"I'll be back in an hour. If anything happens - if the boys annoy you, or any one attempts to enter the old house, telephone to the station or summon the officer at the corner. I don't believe any harm will come from leaving the place to itself for a while." Then I walked around the block.
When I arrived in front again it was quite dark. So was the house; but there was light in the library. I felt assured that I should find Uncle David there, and I did. When, after a noiseless entrance and a careful advance through the hall, I threw open the door beyond the gilded pillars, it was to see the tall figure of this old man mounted upon the chair I had left there, peering up at the nail from which I had so lately lifted the picture. He started as I presented myself and almost fell from the chair. But the careless laugh I uttered assured him of the little importance I placed upon this evidence of his daring and unappeasable curiosity, and he confronted me with an enviable air of dignity; whereupon I managed to say:
"Really, Mr. Moore, I'm glad to see you here. It is quite natural for you to wish to learn by any means in your power what that picture concealed. I came back, because I suddenly remembered that I had forgotten to rehang it" Involuntarily he glanced again at the wall overhead, which was as bare as his hand, save for the nail he had already examined.
"It has concealed nothing," he retorted. "You can see yourself that the wall is bare and that it rings as sound as any chimneypiece ever made." Here he struck it heavily with his fist. "What did you imagine that you had found?"
I smiled, shrugged my shoulders in tantalizing repetition of my former action upon a like occasion and then answered brusquely:
"I did not come back to betray police secrets, but to restore this picture to its place. Or perhaps you prefer to have it down rather than up? It isn't much of an ornament" He scrutinized me darkly from over his shoulder, a wary gleam showing itself in his shrewd old eyes; and the idea crossed me that the moment might possess more significance than appeared. But I did not step backward, nor give evidence in any way that I had even thought of danger. I simply laid my hand on the picture and looked up at him for orders.
He promptly signified that he wished it hung, adding as I hesitated these words: "The pictures in this house are supposed to stay on the walls where they belong. There is a traditional superstition against removing them."
I immediately lifted the print from the floor. No doubt he had me at a disadvantage, if evil was in his heart, and my position on the hearth was as dangerous as previous events had proved it to be. But it would not do to show the white feather at a moment when his fate, if not my own, hung in the balance; so motioning him to step down, I put foot on the chair and raised the picture aloft to hang it. As I did so, he moved over to the huge settle of his ancestors, and, crossing his arms over its back, surveyed me with a smile I rather imagined than saw.
Suddenly, as I strained to put the cord over the nail he called out:
"Look out! you'll fall."
If he had intended to give me a start in payment for my previous rebuff he did not succeed; for my nerves had grown steady and my arm firm at the glimpse I had caught of the shelf below me. The fine brown powder I had scattered there had been displaced in five distinct spots, and not by my fingers. I had preferred to risk the loss of my balance, rather than rest my hand on the shelf, but he had taken no such precaution. The clue I so anxiously desired and for which I had so recklessly worked, was obtained.
But when half an hour later I found an opportunity of measuring these marks and comparing them with those upstairs, I did not enjoy the full triumph I had promised myself. For the two impressions utterly failed to coincide, thus proving that whoever the person was who had been in this house with Mrs. Jeffrey on the evening she died, it was not her uncle David.
