It is sometimes an ungrateful task to tell the story of Arsène Lupin's life, for the reason that each of his adventures is partly known to the public, having at the time formed the subject of much eager comment, whereas his biographer is obliged, if he would throw light upon what is not known, to begin at the beginning and to relate in full detail all that which is already public property.
It is because of this necessity that I am compelled to speak once more of the extreme excitement which the news of that shocking series of crimes created in France, in Europe and throughout the civilized world. The public heard of four murders practically all at once, for the particulars of Cosmo Mornington's will were published two days later.
There was no doubt that the same person had killed Cosmo Mornington, Inspector Vérot, Fauville the engineer, and his son Edmond. The same person had made the identical sinister bite, leaving against himself or herself, with a heedlessness that seemed to show the avenging hand of fate, a most impressive and incriminating proof, a proof which made people shudder as they would have shuddered at the awful reality: the marks of his or her teeth, the teeth of the tiger!
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