The items of evidence and information thus collected by myself, from the newspapers, at the suggestion of Dupin, embraced only one more point—but this was a point of seemingly vast consequence. It appears that, immediately after the discovery of the clothes as above described, the lifeless, or nearly lifeless body of St. Eustache, Marie’s betrothed, was found in the vicinity of what all now supposed the scene of the outrage. A phial labelled “laudanum,” and emptied, was found near him. His breath gave evidence of the poison. He died without speaking. Upon his person was found a letter, briefly stating his love for Marie, with his design of self-destruction. “I need scarcely tell you,” said Dupin, as he finished the perusal of my notes, “that this is a far more intricate case than that of the Rue Morgue; from which it differs in one important respect. This is an ordinary, although an atrocious instance of crime. There is nothing peculiarly outré about it. You will observe that, for this reason, the mystery has been considered easy, when, for this reason, it should have been considered difficult, of solution. Thus; at first, it was thought unnecessary to offer a reward. The myrmidons of G—— were able at once to comprehend how and why such an atrocity might have been committed. They could picture to their imaginations a mode—many modes—and a motive—many motives; and because it was not impossible that either of these numerous modes and motives could have been the actual one, they have taken it for granted that one of them must. But the case with which these variable fancies were entertained, and the very plausibility which each assumed, should have been understood as indicative rather of the difficulties than of the facilities which must attend elucidation. I have before observed that it is by prominences above the plane of the ordinary, that reason feels her way, if at all, in her search for the true, and that the proper question in cases such as this, is not so much ‘what has occurred?’ as ‘what has occurred that has never occurred before?’ In the investigations at the house of Madame L’Espanaye, (*14) the agents of G—— were discouraged and confounded by that very unusualness which, to a properly regulated intellect, would have afforded the surest omen of success; while this same intellect might have been plunged in despair at the ordinary character of all that met the eye in the case of the perfumery-girl, and yet told of nothing but easy triumph to the functionaries of the Prefecture.