The conclusion and the plot itself of the story by Edgar Allan Poe The Fall of the House of Usher is not as surprising as it is intriguing. Actually, it poses more questions than answer any assumptions previously made while the plot developed.
For example, the beginning of the story sets the pace and the atmosphere as to what is coming: A visit paid to a very strange individual and the subsequent description of the deterioration of his estate.
Then, as the plot develops, we enter the mind of Usher, as well as that of the narrator. We realize that there are secrets in the Usher clan, and terrible realities such as inbreeding, genetic malformations, and overall decrepitude. This comes, however, as a consequence of the horrid state of affairs in the Usher estate.
When we find out about the twin sister and how they took care of her body we still realize that this is a sign of a massive curse that seems to loom over the Ushers, and we almost welcome the rest because, after all, there is no more solution to the house of Usher, but to fall and implode.
Therefore, the conclusion and plot are very well interconnected and maintain the element of suspense and fear that is so typical of Poe's Gothic writing.