He sat down resolutely, curbing his impatience, and ate and drank his fill. When he had finished his meal, he felt that he had acted well and with prudence. He was ready now for any emergency, equal to any effort.

It was by this time dark, and he could move into the upper part of the house with comparative safety. All day long the rain had been plashing into the area with a dismal sound; the dreariness of the weather and the dreariness of the house would have daunted any man who had not a serious purpose to sustain him. Frederick had held no further communication with the detective; during the day it was impracticable. But it had been arranged between them that when night came, the detective, if he had anything of importance to communicate, should drop a letter into the area, of course at such time and in such a way as should afford no chance of detection. Before going upstairs with his precious key, Frederick cautiously opened the door which led into the area, and saw that a small packet of brown paper had been dropped during the day. He picked it up and opened it; there was a stone inside, and round the stone a sheet of note paper, on which was written, in the detective’s handwriting:

“Mrs. H. has received to-day a large sum of money. Her friend, Mr. P., was with her for nearly two hours. Upon leaving her house he drove to the City and cashed a cheque for fifteen hundred pounds. He was in high spirits. There is something in the wind; it looks as if they are making preparations to flit. Mrs. H. is getting together as much ready money as she can lay her hands on. I have no doubt she and Mr. P. have arranged to-day to go away together. Nothing further to say on that head. Your young lady friend in No. 118, Becky, is quite safe, but she looks anxious. On your account, I guess. Her little friend, Fanny, is a brick. We shall be on the watch all night in the Square. If you are in want of help, use your whistle.”

Not being in want of help at present, Frederick destroyed the letter, and went upstairs to the first floor. Opening the door of the room his father had occupied, he saw that no person had entered it during the day; everything was as Pelham had left it early in the morning. Frederick, by the light of his lantern, looked around for drawer or desk. A chest of drawers was there, unlocked and empty; a desk also, which had been broken open, and which the key he had found would not fit. As he left the room he saw, lying in a corner of the wall, a large key. It was the key of his father’s room. He put it in the lock, and it turned easily.

“Pelham would be astonished to-night,” he thought, “if, when he came, he found the door locked against him. But that would be putting him on his guard. I will open the trap for him instead of closing it. Murderer! Your hour is approaching!”

He unlocked the door, and put the key in his pocket, with no distinct intention, but with an idea that it might in some way prove useful. When in his thought the unspoken words came to his mind, “I will open the trap for him instead of closing it,” he had not the dimmest comprehension of their awful significance, or of the fearful manner in which they were to be verified.

He entered the adjoining room in which he had kept his long and painful watch on the previous night. In the room was a sideboard, and to this he first directed his attention. The key he had found in the kitchen was too small for either of the sideboards, and as they were locked, he forced them open. There was nothing inside but some mouldy biscuits and a couple of old-fashioned decanters, with dregs of wine in them. He felt about for secret drawers, but found none. A cupboard next attracted his attention, and he searched it carefully. It contained plates and wine glasses, a shell box and a shell caddy, with views of Margate on them. Both were open, and he discovered nothing on the shelves which was likely to bring his search to a successful issue. Before proceeding further he thought—in case Pelham should take it into his head to commence his work early on this which he declared should be his last night in No. 119—it would be well to replace the table which had fallen over when he stepped from it. He raised it carefully and replaced it on its carved feet. It was a round table of Spanish mahogany, and was a contrast to the other furniture in the room, being old-fashioned and of ancient make. As he raised it, one of the lower surfaces upon which he placed his hand shifted slightly, and the thought flashed through his mind that there might be a drawer beneath. He stooped and looked upward, and saw that his impression was a correct one. A drawer was there, evidently intended as a secret drawer; it was locked. With trembling hands he tried the key. It fitted the lock, turned, and the drawer was open—and there, beneath his eyes, were some sheets of folio paper, upon which he recognised his dead father’s handwriting.

He drew forth the sheets and rapidly scanned them. They were in the form of a diary, and contained the record of his father’s last days, or perhaps his last hours. Tears filled his eyes as he gazed at the beloved memorial of a dear one, from whose heart he had been torn by the foulest treachery. He dashed the tears away. No time now for grief; a sterner duty than that of mourning for the dead was before him. In his hands he held the vindication of his good name, and, he hoped, the means of bringing the guilty to punishment. He must to work at once, and read the words the dead had written for him. He went down to the kitchen, and, setting the door open so that no sound made in the house should escape his ears, commenced the perusal of his murdered father’s diary.