Mr. John Wilson Murray, one of the noted detectives, says simply in his "Memoirs of a Great Detective":
"There is no magic about the detective business. A detective walking along the street does not suddenly hear a mysterious voice whisper 'Banker John Jones has just been robbed of $1,000,000.' He does not turn the corner and come upon a perfect stranger, and then, because the stranger has a twisted cigar in his mouth, suddenly pounce upon him and exclaim: 'Aha, villain that you are! give back to Banker Jones the $1,000,000 you stole ten minutes ago!' The detective business is of no such foolish and impossible character. Detectives are not clairvoyants, or infallible prophets, or supernatural seers. They possess no uncanny powers and no mantle of mysterious wonder-working. I remember a few years ago I was subpoenaed before a grand jury in the City of New York to testify on a matter pertaining to a prisoner, whose record I knew here in Canada. The foreman of that jury was a man prominent in New York's business life. When I was called he looked at me and suddenly said:
"'Inspector Murray, what crimes have been committed within the past hour in New York, and who committed them?'
"'I have not the slightest idea,' I replied.
"'Oh, ho! So you cannot go out and put your hands on every man who has committed a crime? You are a detective, yet cannot do that?' he said.
"'I am not that kind of detective,' I replied. 'When I get a guilty man it usually is by hard work or good luck, and often by both.'
"'Thank the Lord we've found a detective who is not greater than God,' he said.
"As a matter of fact the detective business is a plain ordinary business, just like a lawyer's business, a doctor's business, a railway manager's business. It has its own peculiarities because it deals with crime, with the distorted, imperfect, diseased members of the social body, just as a surgeon's business deals with the distorted, imperfect, diseased members of the physical body. But it is not an abnormal or phenomenal or incomprehensible business. There is nothing done in it, nothing accomplished by any detective, that is not the result of conscientious work, the exercise of human intelligence, an efficient system of organization and intercommunication, and good luck. A good detective must be quick to think, keen to analyse, persistent, resourceful, courageous. But the best detective in the world is a human being, neither half-devil nor half-god, but just a man with the attributes or associates that make him successful in his occupation.
"The best detective, therefore, is a man who instinctively detects the truth, lost though it may be in a maze of lies. By instinct he is a detective. He is born to it; his business is his natural bent. It would be a platitude to say the best detectives are born, not made. They are both born and made for the business. The man who, by temperament and make-up, is an ideal detective, must go through the hard years of steady work, must apply himself, and study and toil in making himself what he is born to he. Sandow was born to be a strong man, but, if he had not developed himself by hard work, he would not have become the strongest man of his time. As a detective advances in his business he will find that the more he studies and works, the stronger his powers of intuition, of divination, of analysis become. A very simple broad illustration will prove this. If a detective is chasing a criminal from country to country, and has learned, by study of the extradition treaties, that a certain country offers a better haven than another, he may save himself many a weary mile by going to the country where his common sense tells him his man is more likely to be. A mechanical knowledge of the use of tools, a knowledge of the effects of poisons, a knowledge of the ways of banking, of the habits of life of the various classes, in various callings, a knowledge of crooks, and, above all, a knowledge of human nature, in whatsoever way manifest, are invaluable elements of the equipment of a good detective."
2. Fictive Detective Material
The usual work, then, of a real detective does not demand the extraordinary powers of the fiction detective. But the plots selected by fiction writers for their stories are the cases that do demand it. And this, because it interests the reader's imagination, piques his curiosity and makes possible the solution of the problem.
The assertion of Sherlock Holmes founded on the aphorism that truth is stranger than fiction is in itself fiction.
"My dear fellow," said Sherlock Holmes, as we sat on either side of the fire in his lodgings at Baker Street, "life is infinitely stranger than anything which the mind of man can invent. We would not dare to conceive the things which are really mere commonplaces of existence. If we could fly out of that window hand in hand, hover over this great city, gently remove the roofs, and peep in at the queer things which are going on, the strange coincidences, the plannings, the cross-purposes, the wonderful chains of events, working through generations, and leading to the most outré results, it would make all fiction, with its conventionalities and foreseen conclusions, most stale and unprofitable."
"And yet I am not convinced of it," I answered. "The cases which come to light in the papers are, as a rule, bald enough, and vulgar enough. We have in our police reports realism pushed to its extreme limits, and yet the result is, it must be confessed, neither fascinating nor artistic."
"A certain selection and discretion must be used in producing a realistic effect," remarked Holmes. "This is wanting in the police report, where more stress is laid perhaps upon the platitudes of the magistrate than upon the details, which to an observer contain the vital essence of the whole matter."
The first-quoted remarks of Holmes are pure fiction and are introduced by the author to give an effect which he desires. But it is the truth that a certain selection and discretion must be used regarding plots, and it is this that makes or mars the interest of the Detective Story.
Poe's three masterpieces of detective fiction are perfectly conceived, constructed and completed, entirely in his imagination. But when he undertook "The Mystery of Marie Rôget" he worked upon a plot founded on fact; the story of a real murder of a real girl, with the result that there was no dénouement, and the editors of the magazine in which the story originally appeared, decided that it would be best to omit the latter half of the tale, and we are told that it was never printed in full. Though interesting in its statement of the problem, the solution never could be reached, and the story, as a Detective Story, was a failure.
3. The Transcendent Detective
The status of the fiction detective is so well-defined that it is the habit of authors to scoff at it, and endeavor to convince us that their own detectives are true to life.
For instance, in a Detective Story of some merit, called "The House Opposite," by Elizabeth Kent, the detective says:
"I am aware that the detective of fiction is always supposed to be omniscient, but my profession, Doctor, is just like any other. There is no hocus-pocus about it. To succeed in it requires, in the first place, accurate and most minute powers of observation, unlimited patience, the capacity of putting two and two together. Add to this an unprejudiced mind, and last, but not least, respect, amounting to reverence, for any established fact."
Many authors of late think it argues themselves original to indulge in a fleer at the methods of Sherlock Holmes. A typical example of this often-used device is here quoted from "Midnight at Mears House," by Harrison J. Holt:
As I smoked, my gaze travelled idly about the room till it rested upon the big brass candlestick smeared with melted tallow which we had found that morning on the dining table.
"If I were only another Sherlock Holmes now," I thought, "I should be able to reconstruct the entire tragedy from that candlestick, supposing of course the murderer used it. An intelligent smell of the wick would tell me what particular brand of matches he used to light it, and it would only be necessary to visit the one dealer who kept them and get from him a photograph of the man, or a sufficiently accurate description of him, to make his arrest a matter of only a trifling difficulty." I chuckled at the absurdity of the notion. It seemed however, hardly more