"Exactly my opinion," exclaimed Superintendent Galloway, eagerly rising to the fly. "I have ascertained that Ronald's behaviour during the time he was staying at the hotel was that of an ordinary sane Englishman. The proprietor says he was quite a gentleman, with nothing eccentric or peculiar about him, and the servants say the same. They are the best judges, after all. And nobody noticed anything peculiar about him at the breakfast table except yourself and Sir Henry--and what happened? Nothing, except that he was a bit excited--and no wonder, after the young man had just been ordered to leave the hotel. Then Sir Henry grabbed hold of him and he fainted--or pretended to faint; it may have been all part of his game. Sir Henry may have thought he intended to do something or other, but no British judge would admit that as evidence for the defence. This chap Ronald is as sane as you or me, and a deep, cunning cold-blooded scoundrel to boot. If the defence try to put up a plea of insanity they'll find themselves in the wrong box. There's not a jury in the world that wouldn't hang him on the evidence against him." This time Colwyn could not forbear smiling at the guileless way in which Superintendent Galloway had revealed the thoughts which had been passing through his mind. But his amusement was momentary, and it was in a grave, earnest tone that he replied: "The hotel incident is a puzzling one, but I agree with you that it doesn't enter into the police case against Ronald. It is your duty to deal with the facts of the case, and if you think that Ronald committed this murder----" "If I think that Ronald committed this murder!" Superintendent Galloway's interruption was both amazed and indignant. "I'm as certain he committed the murder as if I saw him do it with my own eyes. Did you, or anybody else, ever see a clearer case?" "It is because the circumstantial evidence against him is so strong that I speak as I do," continued Colwyn, in the same earnest tones. "Innocent men have been hanged in England before now on circumstantial evidence. It is for that very reason that we should guard ourselves against the tendency to accept the circumstantial evidence against him as proof of his guilt, instead of examining all the facts with an open mind. We are the investigators of the circumstances: it is not for us to prejudge. That is the worst of circumstantial evidence: it tends to prejudgment, and sometimes to the ignoring of circumstances and facts which might tell in favour of the suspect, if they were examined with a more impartial eye. It is for these reasons that I am always careful to suspend judgment in cases of circumstantial evidence, and examine carefully even the smallest trifles which might tell in favour of the man to whom circumstantial evidence points. "Have you discovered anything, since you have been at the inn, which shakes the theory that Ronald is the murderer?"