"Couldn't the letter have been returned to Mrs. Bell's apartment, through some error in the address? She would not have mailed an important letter without the return address," said Carroll practically.
"That was my idea exactly, so when it didn't come I looked for it there; several letters addressed to her had been delivered, but there was no sign of this one. Now, I can't tell why, but I feel as if I want somebody in that house. Was there ever anything more utterly unreasonable than that? I wouldn't dare tell any one but you; I can't explain it, but neither can I rid myself of the feeling, and I was going to seek you, to ask if you will undertake this for me. All I want is that you shall put in whatever time you spend in your own apartment there. Nothing may come of it, but you have no idea what a relief it will be to me if you will not be too much inconvenienced, and you have no dread of the rather morbid associations."
"I'll do it," Carroll answered. "There are too many other people in the building for me to be afraid of anything alive, and as for the dead—well, I shouldn't be afraid of her either. I can't tell you why, but I believe this is a good move." She gave a little shiver. "I hope the new lock is a strong one, Silvia; I should hate to have the murderer come back to the scene of his crime."
CHAPTER XVIII
DR. EARL IS INDICTED FOR MURDER
The grand jury returned an indictment against Dr. John Earl for the murder of Mrs. Emma Bell. There could be but one grade of homicide in this kind of a case, and he was accordingly charged with murder in the first degree and his trial was set for Tuesday of the following week.
Frank came to see him early Saturday morning. "The neighbors of Mrs. Bell will be at the trial in full force to tell of your daily visits there at all sorts of ungodly hours. Their gossip indicates that they believe you had a very serious affair on with her, and this, together with the claim of the surgeons that you botched the operation on the child's leg, furnishes a fairly powerful motive for the crime, at least in the public mind. Jack," he asked, with a mixture of doubt and anxiety, "did you really have an affair with her?"
"Nonsense, Frank, nonsense," answered his brother. "It is true that I went there at rather unusual hours; I was pretty busy, and when I found she was in the habit of sitting up until after midnight I used to drop in there when I was through for the day. I don't think I ever went there later than nine-thirty or ten, and I seldom stayed more than fifteen or twenty minutes. Later on I was, and I still am, greatly worried about the child. Of course my operation didn't produce tuberculosis; that is silly, but it serves the purposes of jealous rivals. When I found this tubercular condition developing I asked her mother a great many questions; it seemed to me so improbable that it should have occurred when the child was really having better care than usual, judging from their surroundings, that I sought to learn whether it was not a recurrence of some trouble she had apparently outgrown, and from her mother's answers I think there is absolutely no doubt that this is true. You will readily see, under the circumstances, that I did not time my visits watch in hand, but the charge of a liaison there would be ridiculous were it not so vulgar and malicious. There was some sort of a tragedy in the woman's life, but I have no idea whatever as to its nature."