"I don't understand what you mean, Mr. McKelvie," she answered, surprised.

"The coroner appointed him your counsel pro tem. and he left the room to consult with you. Did he not tell you what you should or should not say in answer to the coroner's questions?" he explained.

"Oh, no. He merely sent word by a policeman that I was to come down and that he considered it best that I tell frankly all that had happened that night. I did not see him until I came into the study and he first spoke to me, advising me to answer," she replied.

He made one or two more notes and then held out his hand. "Thank you, Mrs. Darwin. You have helped me materially. Good-by for the present."

"Good-by, Mr. McKelvie. Good-by, Carlton. See how quickly you can solve this mystery, won't you please? It's horrible there!" and she pointed toward the corridor.

"I will do my very best, Mrs. Darwin, but don't hope too soon, for the way is long and dark," returned McKelvie with deep sympathy.

When she had disappeared from sight around the bend of the corridor, he spoke again. "She's a brave little woman," he said, greatly moved. "God grant I'm not too late!"

I was silent, for Ruth's incarceration was the one subject I dared not permit myself to dwell on if I desired to retain my sanity, and in another moment McKelvie himself had changed the subject.

"By the way, I clean forgot to ask her a rather important question," he said, and he called to the warden, who brought Ruth back as far as the door of the reception-room. Somehow I could not bear to part from Ruth again and as there was no necessity for me to show myself, I remained where I could hear him without being seen.

"I'm sorry to disturb you again, Mrs. Darwin, but I forgot to ask you this question. Why did you deny knowing Cora Manning at the inquest?"