"None." "You deny all four possibilities?" "Yes." "Then you are using denial only to hide the fact, whatever it may be; and of the four possibilities I am obliged to select the first as the most likely." "You mean that I attacked you?" "That is not what I said. I said you must have taken the train to injure me, but that does not mean necessarily that it was to attack me with your own hand. Any attack aimed against me would be likely to have several agents. There would be somewhere, probably, a distant brain that had planned it; there would be an intelligent brain near by to oversee it; and there would be a strong hand to perform it. The overseeing brain and the performing hand--or hands--might belong to one person, or to two, or more. How many there were I cannot now determine, since people were allowed to get off the train. The conductor and Avery--" "Father!" "Yes, Harriet; but I expected better of Avery. Mr. Eaton, as you are plainly withholding the truth as to your reason for taking this train, and as I have suffered injury, I am obliged--from the limited information I now have--to assume that you knew an attack was to be made by some one, upon that train. In addition to the telegram, addressed to you under your name of Eaton and informing of my presence on the train, I have also been informed, of course, of the code message received by you addressed to Hillward. You refused, I understand, to favor Mr. Avery with an explanation of it; do you wish to give one now?" "No," said Eaton. "It has, of course, been deciphered," the blind man went on calmly. "The fact that it was based upon your pocket English-Chinese dictionary as a word-book was early suggested; the deciphering from that was simply a trial of some score of ordinary enigma plans, until the meaning appeared." Eaton made no comment. Santoine went on: "And that very interesting meaning presented another possible explanation--not as to your taking the train, for as to that there can be only the four I mentioned--but as to the attack itself, which would exonerate you from participation in it. It is because of this that I am treating you with the consideration I do. If that explanation were correct, you would--" "What?" "You would have had nothing to do with the attack, and yet you would know who made it." At this, Eaton stared at the blind man and wet his lips. "What do you mean?" he said. Santoine did not reply to the question. "What have you been doing yesterday and to-day?" he asked. "Waiting," Eaton answered. "For what?" "For the railroad people to turn me over to the police."