I bowed with a coldness which showed, I dare say, very plainly the impression which had been produced upon my mind.
"We thought that it was probably you, as your friendship with Mr. Sherlock Holmes is so well known. Would you mind coming over and speaking to Mrs. Douglas for one instant?"
I followed him with a dour face. Very clearly I could see in my mind's eye that shattered figure on the floor. Here within a few hours of the tragedy were his wife and his nearest friend laughing together behind a bush in the garden which had been his. I greeted the lady with reserve. I had grieved with her grief in the dining room. Now I met her appealing gaze with an unresponsive eye.
"I fear that you think me callous and hard-hearted," said she.
I shrugged my shoulders. "It is no business of mine," said I.
"Perhaps some day you will do me justice. If you only realized--"
"There is no need why Dr. Watson should realize," said Barker quickly. "As he has himself said, it is no possible business of his."
"Exactly," said I, "and so I will beg leave to resume my walk."