"I knew I would have to swear to it, so I wrote it down to make sure.
But my memory is good; I wouldn't have forgotten."

The witness was rigidly cross-examined, but nothing could shake her testimony.

"The window," she said, "of the room where the murder was committed, opened on a lawn and flower-garden—any one could have entered by it. The knife lay on the table close by."

Dr. Dane was next called and gave his medical testimony. The dagger shown, would inflict the wound that caused Lady Catheron's death. In his opinion, but one blow had been struck and had penetrated the heart. Death must have been instantaneous. A strong, sure hand must have struck the blow.

The policeman who had found the dagger was called, and testified as to its discovery among the brake, on the evening succeeding the murder.

Miss Catheron was the next and last witness summoned. At the sound of her name a low, ominous hiss was heard—sternly repressed at once by the coroner.

"Miss Catheron came in," quoth the Courier, "as pale as marble and looking as emotionless. Her large dark eyes glanced over the crowded room, and dead silence fell. The young lady gave her evidence clearly and concisely—perfectly calm in tone and manner.

"On the Friday evening in question, the deceased Lady Catheron and myself had a misunderstanding. It was my fault. I made a remark that wounded her, and she retorted by saying I should leave Catheron Royals on the morrow. I answered equally angrily, that I would not, and left the room. When I was alone I began to regret what I had so hastily said. I thought the matter over for a time, and finally resolved to return and apologize. I went back to the nursery, and found Lady Catheron fast asleep. I would not disturb her, and immediately left the room. On the threshold, I encountered Nurse Pool. I had always disliked the woman, and spoke sharply to her, ordering her away. Half an hour after, as I sat in my room alone, Hooper, the butler, came up, and told me my lady was murdered. I was naturally shocked and horrified. I went down with him, and saw her. I hardly knew what to do; I felt stunned and bewildered by the suddenness of so terrible a catastrophe. I told the butler to send for Sir Victor, for the family physician, and the police. I knew not what else to do. I could not remain in the room, because the sight of blood always turns me faint and sick. I retired to my own apartment and remained there until the arrival of Lady Helena Powyss."

* * * * *

There was one fact, the Chesholm Courier did not chronicle, concerning Miss Catheron's evidence—the formal, constrained manner in which it was given, like one who repeats a well-learned lesson by rote.