The interest of the Detective Story depends entirely on its rousing the reader's curiosity. Every detail of its plan must sustain and heighten an intense determination to know the solution of the riddle; and as this curiosity becomes keener, and this determination more inflexible, so much more necessary is it that the explanation shall be adequate and satisfactory.
But this result cannot be achieved if the author undertakes his work in the spirit shown by the authors of "The Wrecker", Robert Louis Stevenson and Lloyd Osbourne, when they say:
"We had long been at once attracted and repelled by that very modern form of the police novel or mystery story, which consists in beginning your yarn anywhere but at the beginning, and finishing it anywhere but at the end; attracted by its peculiar interest when done, and the peculiar difficulties that attend its execution; repelled by that appearance of insincerity and shallowness of tone, which seems its inevitable drawback. For the mind of the reader, always bent to pick up clews, receives no impression of reality or life, rather of an airless, elaborate mechanism; and the book remains enthralling, but insignificant, like a game of chess, not a work of human art. It seemed the cause might lie partly in the abrupt attack; and that if the tale were gradually approached, some of the characters introduced (as it were) beforehand, and the book started in the tone of a novel of manners and experience briefly treated, this defect might be lessened and our mystery seem to inhere in life."
The technique of the Mystery Story does not permit it to be a novel of manners, and yet the manners must not be neglected. If a Detective Story is to be literature, what may be called its manners must be looked after quite as carefully as its plot, though by no means with such conspicuous result. Intrinsic merit must be the real basis of its interest.
It is the care and artistic conscience that count, notwithstanding the ideas expressed in "The Wrecker".
Mr. Julian Hawthorne truly says,
"You cannot make a riddle story by beginning it and then trusting to luck to bring it to an end. You must know all about the end and the middle before thinking, even, of the beginning; the beginning of a riddle story, unlike those of other stories and of other enterprises, is not half the battle; it is next to being quite unimportant, and, moreover, it is always easy. The unexplained corpse lies weltering in its gore in the first paragraph; the inexplicable cipher presents its enigma at the turning of the opening page. The writer who is secure in the knowledge that he has got a good thing coming, and has arranged the manner and details of its coming, cannot go far wrong with his exordium; he wants to get into action at once, and that is his best assurance that he will do it in the right way. But O! what a labor and sweat it is; what a planning and trimming; what a remodeling, curtailing, interlining; what despairs succeeded by new lights, what heroic expedients tried at the last moment, and dismissed the moment after; what wastepaper baskets full of futilities, and what gallant commencements all over again! Did the reader know, or remotely suspect, what terrific struggles the writer of a really good detective story had sustained, he would regard the final product with a new wonder and respect, and read it all over once more to find out how the troubles occurred. But he will search in vain; there are no signs of them left; no, not so much as a scar. The tale moves along as smoothly and inevitably as oiled machinery; obviously, it could not have been arranged otherwise than it is; and the wise reader is convinced that he could have done the thing himself without half trying. At that, the weary writer smiles a bitter smile; but it is one of the spurns that patient merit of the unworthy takes. Nobody, except him who has tried it, will ever know how hard it is to write a really good detective story. The man or woman who can do it can also write a good play (according to modern ideas of plays), and possesses force of character, individuality, and mental ability. He or she must combine the intuition of the artist with the talent of the master mechanic, but will seldom be a poet, and will generally care more for things and events than for fellow creatures."
Mr. Julian Hawthorne also discusses this question of interest as maintained by the inverse order of narration.
"… One charge, at least, does lie against the door of the riddle-story writer; and that is, that he is not sincere; he makes his mysteries backward, and knows the answer to his riddle before he states its terms. He deliberately supplies his reader, also, with all manner of false scents, well knowing them to be such; and concocts various seeming artless and innocent remarks and allusions, which in reality are diabolically artful, and would deceive the very elect. All this, I say, must be conceded; but it is not unfair; the very object, ostensibly, of the riddle story is to prompt you to sharpen your wits; and as you are yourself the real detective in the case, so you must regard your author as the real criminal whom you are to detect."
It is safe to say that Poe's conception of the interest-element in the Detective Story, as illustrated by his three great tales, "The Murders in the Rue Morgue," "The Purloined Letter," and "The Mystery of Marie Rôget," was that the great point was not the fascination of the mystery itself but the interest the reader would take in following the successive steps of reasoning by which the crime was ferreted out. The reader is thus turned into an analytical observer who not only delights in the mental ingenuity exhibited by the detective, but actually joins with him in working out the intricacies of a problem which, though at first seemingly insoluble, is at length mastered entirely. Thus his admiration for the "investigator" is happily coupled with his own delight in unraveling the skein which the author has woven expressly for the purpose, as Poe himself expresses it when he admits all the merits of the device, but modestly disclaims that his ingenious stories have real greatness. He speaks thus about them:
"They owe most of their popularity to being something in a new key. I do not mean to say that they are not ingenious—but people think them more ingenious than they are—on account of their method and air of method. In the 'Murders in the Rue Morgue,' for instance, where is the ingenuity of unraveling a web which you yourself (the author) have woven for the express purpose of unraveling? The reader is made to confound the ingenuity of the supposititious Dupin with that of the writer of the story."
Of course the ingenuity of the author and that of his character are identical, as they are in the case of Conan Doyle and Sherlock Holmes.
Doctor Doyle admits frankly his indebtedness to Poe, and though he claims another prototype than Dupin for his detective, yet he makes this acknowledgment:
"Edgar Allan Poe, who, in his carelessly prodigal fashion, threw out the seeds from which so many of our present forms of literature have sprung, was the father of the detective tale, and covered its limits so completely that I fail to see how his followers can find any fresh ground which they can confidently call their own. For the secret of the thinness and also of the intensity of the detective story is that the writer is left with only one quality, that of intellectual acuteness, with which to endow his hearer. Everything else is outside the picture and weakens the effect. The problem and its solution must form the theme, and the character drawing is limited and subordinate. On this narrow path the writer must walk, and he sees the footmarks of Poe always in front of him. He is happy if he ever finds the means of breaking away and striking out on some little side-track of his own."
6. A Summing Up
To sum up, then, we must agree that for devotees the Detective Story sets a stirring mental exercise, with just enough of the complex background of life to distinguish it from a problem in mathematics. Whatever thrills of horror are excited come by way of the intellect, never starting directly in the emotions. The reader divests himself of sympathy, and applies to every situation the dry light of reason. It is only when one's reason is baffled, leaving the murder unexplained or the ghost at large, that one feels privileged to shudder. And such a shudder is remarkably different from a start that is unthinking. The Detective Story applies reason to some of the big half-mysteries of human conduct; and the result for the ordinary reader is not dissimilar to that felt by the philosopher when trying to square with his poor apparatus the secrets of