The fall of the house of usher why does the narrator reveals that the usher family

From the first lines of the history, the narrator tries to insert the reader in an obscure and sad atmosphere, where it predominates a mystery climate and exacerbated negativity.

The images lead the reader, from the beginning of the narrative to sensations and events that seem to challenge him and to invite to a construction process of differentiated sense.

The creation of the Gothic elements happens through the construction of the atmosphere of fear of the story, as well as the gloomy and decadent character, intensified still more on the phantasmagoric environment of the mansion Usher.

The characters also gain important narrative participation in the study work, as soon as his ambiguous characterization gives to the story a tone of estrangement. So, the Gothic thing in The Fall of the House of Usher is revealed through the morbid description of the narrative environments and of the decoration without life, of the imprecision that shows up around the nature of the events and of the characterization of the main characters, Madeline and Roderick Usher.

the answer is something i don't know