Hearing this, I felt the necessity of sending at once to the station. Where could I find a trustworthy messenger? I took the liberty of asking the doctor if he would repeat to the police what he had already said to me. The station was not much out of his way home. He kindly granted my request. The landlady (Mrs. Crosscapel) joined us while we were talking. She was still a young woman; not easily frightened, as far as I could see, even by a murder in the house. Her husband was in the passage behind her. He looked old enough to be her father; and he so trembled with terror that some people might have taken him for the guilty person. I removed the key from the street door, after locking it; and I said to the landlady: "Nobody must leave the house, or enter the house, till the Inspector comes. I must examine the premises to see if any on e has broken in." "There is the key of the area gate," she said, in answer to me. "It's always kept locked. Come downstairs and see for yourself." Priscilla went with us. Her mistress set her to work to light the kitchen fire. "Some of us," says Mrs. Crosscapel, "may be the better for a cup of tea." I remarked that she took things easy, under the circumstances. She answered that the landlady of a London lodging-house could not afford to lose her wits, no matter what might happen. I found the gate locked, and the shutters of the kitchen window fastened. The back kitchen and back door were secured in the same way. No person was concealed anywhere. Returning upstairs, I examined the front parlor window. There, again, the barred shutters answered for the security of that room. A cracked voice spoke through the door of the back parlor. "The policeman can come in," it said, "if he will promise not to look at me." I turned to the landlady for information. "It's my parlor lodger, Miss Mybus," she said, "a most respectable lady." Going into the room, I saw something rolled up perpendicularly in the bed curtains. Miss Mybus had made herself modestly invisible in that way. Having now satisfied my mind about the security of the lower part of the house, and having the keys safe in my pocket, I was ready to go upstairs.