"You are not to blame, White," he said, "for having failed to note many things which I have now told you. You are the slave of a system. Your method works admirably for the detection of commonplace crime, but as soon as the higher region of romance is reached it is as much out of place as a steam-roller in a lady's boudoir. Look at the remarkable series of crimes the English police have failed to solve of late, merely because some _bizarre_ element had intruded itself at the outset. Have you ever read any of the works of Edgar Allan Poe?" The detective answered in the affirmative. "The Murders of the Rue Morgue" and "The Mystery of Marie Roget" were familiar to him. "Well," went on Bruce, "there you have the accurate samples of my meaning. Poe would not have been puzzled for an hour by the vagaries of Jack the Ripper. He would have said at once--most certainly after the third or fourth in the series of murders--'This is the work of an athletic lunatic, with a morbid love of anatomy and a morbid hatred of a certain class of women. Seek for him among young men who have pestered doctors with outrageous theories, and who possess weak-minded or imbecile relatives.' Then, again, take the murder on the South-Western Railway. Do you think Poe would have gone questioning bar-tenders or inquiring into abortive love affairs? Not he! Jealous swains do not carry pestles about with them to slay their sweethearts, nor do they choose a four-minutes' interval between suburban stations for frenzied avowals of their passion. Here you have the clear trail of a clever lunatic, dropping from the skies, as it were, and disappearing in the same erratic manner. That is why I tell you most emphatically that neither you nor I have yet the remotest conception as to who really killed Lady Dyke." "Surely things look black now against this Mensmore?" "Do they? How would it have fared with an acquaintance of one of the unfortunate women killed by Jack the Ripper had the police found him in the locality with fresh blood-stains on his clothes? What would have resulted from the discovery of a chemist's mortar among the possessions of one of Elizabeth Camp's male friends? Come now, be honest, and tell me." But Mr. White could only smoke in silence. "Therefore," continued Bruce, "let us ask ourselves why, and how, it was possible for Mensmore to commit the crime. Personally, notwithstanding all that we apparently know against him circumstantially, I should hardly believe Mensmore if he confessed himself to be the murderer!" "Now, why on earth do you say that, Mr. Bruce?" "Because Mensmore is normal and this crime abnormal. Because the man who would blow out his brains on account of losses at pigeon-shooting never had brains enough to dispose of the body in such fashion. Because Mensmore, having temporarily changed his name for some trivial reason, would never resume it with equal triviality with this shadow upon his life."