"What do you think we had better do about this, Dr. Arrowsmith?" Mr. Volkes asked as he rejoined them. "Do you believe this story?" "Unquestionably I do," the doctor replied. "I believe every word of it." "But the man was mad, doctor." "Yes, he was mad and has been so for a long time in my opinion, but that makes no difference whatever in my confidence that he was speaking truly. Confessions of this kind from a madman are generally true; their cunning is prodigious, and as long as they wish to conceal a fact it is next to impossible to get it from them; but when, as in the present case, they are proud of their cleverness and of the success with which they have fooled other people, they will tell everything. You see their ideas of right and wrong are entirely upset; the real lunatic is unconscious of having committed a crime, and is inclined even to glory in it." "I wish we could have got him to sign," the magistrate said. "I am sure he could not have held the pen," Dr. Arrowsmith replied. "I will certify to that effect, and as we three all heard the confession, I think that if you draw it out and we sign it as witnesses, it will have just as good an effect as if he had written it himself." "There was one part, doctor, that surprised me even more than the rest--that was the part relating to the man Forester. I don't believe a soul suspected him of being in any way connected with the crime. At least we heard nothing of a knife being found, nor, of course, of the quarrel between Forester and the girl; Ruth Powlett, was it not?" "No; that is all new to us," the doctor said. "I think the best way would be to see her in the morning. She may not like to confess that she concealed the knife, if she did so. Of course, if she does, it will be an invaluable confirmation of his story, and will show conclusively that his confession was not a mere delusion of a madman's brain."