"I was driven over by my employer, who was as amiable as ever, and was introduced by him that evening to his wife and the child. There was no truth, Mr. Holmes, in the conjecture which seemed to us to be probable in your rooms at Baker Street. Mrs. Rucastle is not mad. I found her to be a silent, pale-faced woman, much younger than her husband, not more than thirty, I should think, while he can hardly be less than forty-five. From their conversation I have gathered that they have been married about seven years, that he was a widower, and that his only child by the first wife was the daughter who has gone to Philadelphia. Mr. Rucastle told me in private that the reason why she had left them was that she had an unreasoning aversion to her stepmother. As the daughter could not have been less than twenty, I can quite imagine that her position must have been uncomfortable with her father's young wife.
     "Mrs. Rucastle seemed to me to be colorless in mind as well as in feature. She impressed me neither favorably nor the reverse. She was a nonentity. It was easy to see that sh............