Upon the fourth day of the assassination， a party of the police came， very unexpectedly， into the house， and proceeded again to make rigorous investigation of the premises. Secure， however， in the inscrutability of my place of concealment， I felt no embarrassment whatever. The officers bade me accompany them in their search. They left no nook or corner unexplored. At length， for the third or fourth time， they descended into the cellar. I quivered not in a muscle. My heart beat calmly as that of one who slumbers in innocence. I walked the cellar from end to end. I folded my arms upon my bosom， and roamed easily to and fro. The police were thoroughly satisfied and prepared to depart. The glee at my heart was too strong to be restrained. I burned to say if but one word， by way of triumph， and to render doubly sure their assurance of my guiltlessness.
"Gentlemen， " I said at last， as the party ascended the steps， "I delight to have allayed your suspicions. I wish you all health， and a little more courtesy. By the way， gentlemen， this—this is a very well constructed house." (In the rabid desire to say something easily， I scarcely knew what I uttered at all.) —"I may say an excellently well constructed house. These walls—are you going， gentlemen？—these walls are solidly put together"； and here， through the mere phrenetic of bravado， I rapped heavily， with a cane which I held in my hand， upon that very portion of the brick-work behind which stood the corpse of the wife of my bosom.
But may God shield and deliver me from the fangs of the Arch-Fiend！ No sooner had the reverberation of my blows sunk into silence than I was answered by a voice from within the tomb！—by a cry， at first muffled and broken， like the sobbing of a child， and then quickly swelling into one long， loud， and continuous scream， utterly anomalous and inhuman—a howl—a wailing shriek， half of horror and half of triumph， such as might have arisen only out of hell， conjointly from the throats of the damned in their agony and of the demons that exult in the damnation.