“Now, Miss Dunbar,” said Holmes, “I beg you to tell us exactly what occurred that evening.”
“I can tell you the truth so far as I know it, Mr. Holmes, but I am in a position to prove nothing, and there are points—the most vital points—which I can neither explain nor can I imagine any explanation.”
“If you will find the facts, perhaps others may find the explanation.”
“With regard, then, to my presence at Thor Bridge that night, I received a note from Mrs. Gibson in the morning. It lay on the table of the schoolroom, and it may have been left there by her own hand. It implored me to see her there after dinner, said she had something important to say to me, and asked me to leave an answer on the sundial in the garden, as she desired no one to be in our confidence. I saw no reason for such secrecy, but I did as she asked, accepting the appointment. She asked me to destroy her note and I burned it in the schoolroom grate. She was very much afraid of her husband, who treated her with a harshness for