"Very likely, sir. I do not think it was a ghost."
Colwyn did not pursue the subject further, though he was struck by the wide difference between Charles' account of the incident and that given to him by Duney at the pit that afternoon.
When Charles had cleared the table Colwyn sat smoking and thinking until late. After he was sure that the rest of the inmates of the inn had retired, he went to the kitchen and took the key of Mr. Glenthorpe's room from the hook of the dresser. When he reached his own bedroom, his first act was to push back the wardrobe and open the trap door he had discovered the previous night. He looked at his watch, and found that the hour was a little after eleven. He decided to wait for half an hour before carrying out the experiment he contemplated. By midnight he would be fairly safe from the fear of discovery. He lay down on his bed to pass the intervening time, but he was so tired that he fell asleep almost immediately.
He awakened with a start, and sat up, staring into the black darkness. For a moment or two he did not realise his surroundings, then the sound of stealthy footsteps passing his door brought him back to instant wakefulness. The footsteps halted—outside his door, it seemed to Colwyn. There followed the sound of a hand fumbling with a lock, followed by the shooting of a bolt and the creaking of a door. The truth flashed upon the detective; somebody was entering the next room. As he listened, there was the scrape of a match, and a moment later a narrow shaft of light streamed through the open wall-door into his room.
Colwyn got noiselessly off his bed and looked through the crack in the inner small door into the other room. The picture on the other side of the wall narrowed his range of vision, but through the inch or so of crack extending beyond the picture he was able to see clearly that portion of the adjoining bedroom in which the bed stood. Near the bed, examining with the light of a candle the contents of the writing table which stood alongside of it, was Benson, the innkeeper.
He was searching for something—rummaging through the drawers of the table, taking out papers and envelopes, and tearing them open with a furious desperate energy, pausing every now and again to look hurriedly over his shoulder, as though he expected to see some apparition start up from the shadowy corners. The search was apparently fruitless, for presently he crammed the papers back into the drawers with the same feverish haste, and, walking rapidly across the room, passed out of the view of the watcher on the other side, for the picture which hung on the inside wall prevented Colwyn seeing beyond the foot of the bed. Although the innkeeper could not now be seen, the sound of his stealthy quick movements, and the flickering lights cast by the candle he carried, suggested plainly enough that he was continuing his search in that portion of the room which was not visible through the crack.
In a few minutes he came back into Colwyn's range of vision, looking dusty and dishevelled, with drops of perspiration starting from his face. With a savage gesture, which was akin to despair, he wiped the perspiration from his face, and tossed back his long hair from his forehead. It was the first time Colwyn had seen his forehead uncovered, and a thrill ran through him as he noticed a deep bruise high upon the left temple. The next moment the innkeeper walked swiftly out of the room, and Colwyn heard him close the door softly behind him.
Colwyn waited awhile. When everything seemed quiet, he cautiously opened his door in the dark, and tried the door of the adjoining room. It was locked.
The innkeeper, then, had another key which fitted the murdered man's door. And what was he searching for? Money? The treasury notes which Mr. Glenthorpe had drawn out of the bank the day he was murdered, which had never been found? Money—notes!
By one of those hidden and unaccountable processes of the human brain, the association of ideas recalled to Colwyn's mind where he had previously seen the peculiar watermark of waving lines visible on the piece of paper he had picked up at the brink of the pit that afternoon: it was the Government watermark of the first issue of War Treasury notes.