This belief has been of great assistance to me in my profession. I know the idea is prevalent that a detective arrives at his solutions in a dramatic way through following clues invisible to the ordinary man. This doubtless frequently happens, but, as a general thing, the patience and hard work which Mr. Edison commends is a much safer guide. Very often the following of excellent clues had led me to disaster, as was the case with my unfortunate attempt to solve the mystery of the five hundred diamonds.
As I was saying, I never think of the late Lord Chizelrigg without remembering Mr. Edison at the same time, and yet the two were very dissimilar. I suppose Lord Chizelrigg was the most useless man that ever lived, while Edison is the opposite.
One day my servant brought in to me a card on which was engraved 'Lord Chizelrigg.'
'Show his lordship in,' I said, and there appeared a young man of perhaps twenty-four or twenty-five, well dressed, and of most charming manners, who, nevertheless, began his interview by asking a question such as had never before been addressed to me, and which, if put to a solicitor, or other professional man, would have been answered with some indignation. Indeed, I believe it is a written or unwritten law of the legal profession that the acceptance of such a proposal as Lord Chizelrigg made to me, would, if proved, result in the disgrace and ruin of the lawyer.
'Monsieur Valmont,' began Lord Chizelrigg, 'do you ever take up cases on speculation?'
'On speculation, sir? I do not think I understand you.'
His lordship blushed like a girl, and stammered slightly as he attempted an explanation.
'What I mean is, do you accept a case on a contingent fee? That is to say, monsieur—er—well, not to put too fine a point upon it, no results, no pay.'
I replied somewhat severely:—
'Such an offer has never been made to me, and I may say at once that I should be compelled to decline it were I favoured with the opportunity. In the cases submitted to me, I devote my time and attention to their solution. I try to deserve success, but I cannot command it, and as in the interim I must live, I am reluctantly compelled to make a charge for my time, at least. I believe the doctor sends in his bill, though the patient dies.'