The magistrate in charge of the case fell ill. Four days later, his successor confessed that the matter was beyond him. Two tramps were arrested and at once released. Another was pursued, but not caught; moreover, there was no evidence of any sort or kind against him. In short, it was nothing but one helpless muddle of mist and contradiction. An accident, the merest accident led to the solution, or rather produced a series of circumstances that ended by leading to the solution. A reporter on the staff of an important Paris paper, who had been sent to make investigations on the spot, concluded his article with the following words: "I repeat, therefore, that we must wait for fresh events, fresh facts; we must wait for some lucky accident. As things stand, we are simply wasting our time. The elements of truth are not even sufficient to suggest a plausible theory. We are in the midst of the most absolute, painful, impenetrable darkness. There is nothing to be done. All the Sherlock Holmeses in the world would not know what to make of the mystery, and Arsene Lupin himself, if he will allow me to say so, would have to pay forfeit here." * * * * * On the day after the appearance of that article, the newspaper in question printed this telegram: "Have sometimes paid forfeit, but never over such a silly thing as this. The Saint-Nicolas tragedy is a mystery for babies. "ARSENE LUPIN." And the editor added: "We insert this telegram as a matter of curiosity, for it is obviously the work of a wag. Arsene Lupin, past-master though he be in the art of practical joking, would be the last man to display such childish flippancy." Two days elapsed; and then the paper published the famous letter, so precise and categorical in its conclusions, in which Arsene Lupin furnished the solution of the problem. I quote it in full: "Sir: "You have taken me on my weak side by defying me. You challenge me, and I accept the challenge. And I will begin by declaring once more that the Saint-Nicolas tragedy is a mystery for babies. I know nothing so simple, so natural; and the proof of the simplicity shall lie in the succinctness of my demonstration. It is contained in these few words: when a crime seems to go beyond the ordinary scope of things, when it seems unusual and stupid, then there are many chances that its explanation is to be found in superordinary, supernatural, superhuman motives. "I say that there are many chances, for we must always allow for the part played by absurdity in the most logical and commonplace events. But, of course, it is impossible to see things as they are and not to take account of the absurd and the disproportionate.