Edgar Allan PoE. The Mystery Of Marie Roget (№ 160608)

I, of course, there is no need to tell you, said Dupin, after reading my notes, that this is a much more complicated case than the murders in the Rue Morgue from which it differs in one very important respect, as it represents though is brutal, but ordinary crime. There is nothing out of the ordinary. Note that for this reason, all thought that to reveal it would be easy, whereas it was his mediocrity and is the main stumbling block.